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Ad van den Berg (University of Groningen)30/07/2015, 09:00
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Karl-Heinz Kampert (Universität Wuppertal)30/07/2015, 09:10
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Prof. Sibrand Poppema (University of Groningen)30/07/2015, 09:25
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30/07/2015, 09:40
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Stefan Westerhoff (University of Wisconsin-Madison)30/07/2015, 11:00We provide an update on the continued observation of anisotropy in the arrival direction distribution of cosmic rays in the southern hemisphere. The IceCube neutrino observatory recorded more than 250 billion events between May 2009 and May 2014. Subtracting dipole and quadrupole fit maps, we can use these increased statistics to see significant small-scale structure that approaches our median...Go to contribution page
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Clemens Hoischen (University of Potsdam)30/07/2015, 11:00NGC 253 is one of only two starburst galaxies that is found to emit γ-ray emission from hundreds of MeV to multiple TeV energies. An accurate measurement of the GeV and TeV spectra is crucial to determine the underlying particle accelerators, to probe the dominant emission loss mechanism(s) and to probe the importance of cosmic-ray interaction and transport. The precision of the measurement of...Go to contribution page
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Yoshitaka Ito (Nagoya University (JP))30/07/2015, 11:00Observations of UHECRs' by extensive air showers rely on understanding of hadron interactions at very high energies. Recent LHC experiments have provided useful hadron interaction data at the collision energy which is almost equivalent to 10**17 eV in the laboratory frame. Among them, the LHCf experiment is dedicated measurement of neutral particle productions at very forward region...Go to contribution page
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Dr Lingling Ma (Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences,)30/07/2015, 11:00The data recorded by ARGO-YBJ in more than 5 years have been analyzed todetermine the diffuse gamma ray emission from the Galactic plane. The spatial distribution of the diffuse gamma rays and their energy spectra at Galactic longitudes 25^o < l <100^o o and Galactic latitudes |b|<5^o have been studied. The regions with 40^o< l <100^o and 65^o < l <85^o have been focused, where Milagro...Go to contribution page
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Tycho von Rosenvinge (NASA/Goddard Space Flight Center)30/07/2015, 11:00Using observations from the High Energy Telescopes on STEREO A and B and similar observations from SoHO, near-Earth, we have identified ~250 individual solar energetic particle events that include >14 MeV protons since the beginning of the STEREO mission (Richardson, et al., Solar Physics, 2014). Between the end of December 2009, when the STEREO A and B spacecraft were, respectively, ahead...Go to contribution page
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Prof. Leon Kocharov (University of Oulu, Finland)30/07/2015, 11:15We perform a comparative study of the time-profile morphology of solar high-energy particle emissions including relativistic electrons in three energy channels of SOHO/EPHIN, relativistic protons as registered by the worldwide network of neutron monitors, and ~100 MeV/n protons and helium in several energy channels of SOHO/ERNE. Based on numerical modeling of the interplanetary transport, we...Go to contribution page
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Michael Sutherland30/07/2015, 11:15IceTop can detect an astrophysical flux of neutrons from Galactic sources as an excess of cosmic ray air showers arriving from the source direction. Neutrons are undeflected by the Galactic magnetic field and can typically travel 10 ($E$ / PeV) pc before decay. Two searches through the IceTop dataset are performed to look for a statistically significant excess of events with energies above 10...Go to contribution page
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Mr Gabriele Cologna (LSW Heidelberg)30/07/2015, 11:15The BL$\,$Lac object Mrk$\,$501 was observed at Very High Energies (E$\,$>$\,$100$\,$GeV) with H.E.S.S. (High Energy Stereoscopic System) between 2004 and 2014. The source is detected with high significance above $\sim$2$\,$TeV in $\sim$13.6$\,$h livetime. The observations include periods of low flux and active phases. This led to the detection of strong flaring events, which in 2014 showed a...Go to contribution page
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Joshua Wood (University of Maryland, College Park)30/07/2015, 11:15Geminga is a radio-quiet pulsar ~250 parsecs from Earth that was first discovered as a GeV gamma-ray source and then identified as a pulsar. Milagro observed an extended TeV source spatially consistent with Geminga. HAWC observes a similarly extended source. Observations of Geminga’s flux and extension will be presented.Go to contribution page
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Francesco Cafagna (Universita e INFN, Bari (IT))30/07/2015, 11:15The precise knowledge of the proton-proton cross section is extremely important to model the development, in the atmosphere, of the showers induced by the interaction of ultra high energy cosmic rays. The TOTEM (TOTal cross section, Elastic scattering and diffraction dissociation Measurement at the LHC) experiment at LHC, has been designed to measure the total proton-proton...Go to contribution page
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Dr Masaaki Hayashida (Institute for Cosmic-Ray Research, University of Tokyo)30/07/2015, 11:30RX J1136.5+6737 (z=0.1342) is a hard X-ray bright high-peaked frequency BL Lac object as listed in the MAXI 3-year catalog as well as the Swift-BAT catalog. The source has also been detected by Fermi-LAT with a hard photon index of $1.68\pm0.12$, and belongs to the first Fermi-LAT catalog of $>10$ GeV sources, showing bright (photon flux = $11.7\times10^{-11}$ ph cm$^{-2}$ s$^{-1}$) emission...Go to contribution page
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Juan Carlos Diaz Velez (University of Wisconsin-Madison)30/07/2015, 11:30During the past two decades, experiments in both the Northern and Southern hemispheres have observed a small but measurable energy-dependent sidereal anisotropy in the arrival direction distribution of galactic cosmic rays. The relative amplitude of the anisotropy is $10^{−4} - 10^{−3}$. However, each of these individual measurements is restricted by limited sky coverage, and so the...Go to contribution page
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Dr Alessandro Bruno (Department of Physics, University of Bari, I-70126 Bari, Italy)30/07/2015, 11:30The PAMELA satellite experiment is providing the first direct measurements of Solar Energetic Particles (SEPs) with energies from about 80 MeV to several GeV in near-Earth space, bridging the low energy data from space-based instruments and the Ground Level Enhancement (GLE) data from the worldwide network of neutron monitors. Its unique observational capabilities include the possibility of...Go to contribution page
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1196. Study of high muon multiplicity cosmic ray events with ALICE at the CERN Large Hadron ColliderMario Rodriguez Cahuantzi (Autonomous University of Puebla (BUAP, México)))30/07/2015, 11:30ALICE is one of four large experiments at the CERN Large Hadron Collider. Located 52 meters underground with 28 meters of overburden rock,it has also been used to detect atmospheric muons produced by cosmic ray interactions in the upper atmosphere. We present the multiplicity distribution of these cosmic ray muon events and their comparison with Monte Carlo simulation. This analysis exploits...Go to contribution page
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Mr Hao Zhou (Michigan Technological University)30/07/2015, 11:30A number of Galactic sources emit GeV-TeV gamma rays that are produced through leptonic and/or hadronic mechanisms. Spectral analysis in this energy range is crucial in order to understand the emission mechanisms. The HAWC Gamma-Ray Observatory, with a large field of view and location at 19º N latitude, is surveying the Galactic Plane from high Galactic longitudes down to near the Galactic...Go to contribution page
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Daniel Fiorino30/07/2015, 11:45The High-Altitude Water Cherenkov (HAWC) Observatory, located 4100 m above sea level near Pico de Orizaba (19° N) in Mexico, is sensitive to gamma rays and cosmic rays at TeV energies. The arrival direction distribution of cosmic rays at these energies shows significant anisotropy on several angular scales, with a relative intensity ranging between $10^{-3}$ and $10^{-4}$. We present the...Go to contribution page
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Ira Jung-Richardt30/07/2015, 11:45RCW 86 (also known as G315.4-2.3 or MSH 14-3) is a young supernova remnant about 1800 years old with a shell-like structure in the optical, radio, infrared and X-rays regimes with a diameter of about 40'. We will show detailed morphological and spectral studies of the TeV gamma-ray data measured with the H.E.S.S. telescope system. These studies reveal for the first time a shell-like...Go to contribution page
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Dr Alexander Edward Herve (Karlsruhe Institute of Technology)30/07/2015, 11:45The interpretation of extensive air shower measurements, produced by ultra-high energy cosmic rays, relies on the correct modelling of the hadron-air interactions that occur during the shower development. The majority of hadronic particles is produced at equivalent beam energies below the TeV range. NA61/SHINE is a fixed target experiment using secondary beams produced at CERN using the SPS....Go to contribution page
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Mihir Desai (SwRI)30/07/2015, 11:45Our Sun accelerates ions and electrons up to near-relativistic speeds in at least two ways; magnetic reconnection during solar flares is believed to produce the impulsive or $^3$He-rich solar energetic particles (SEPs), while diffusive shock acceleration at fast coronal mass ejection - or CME-driven shock waves are thought to produce the larger gradual SEPs. Despite recent advances in our...Go to contribution page
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Valentina Vacca (Max Planck for Astrophysics)30/07/2015, 11:45We analyze the 6.5 year all-sky data from the Fermi Large Area Telescope restricted to gamma-ray photons with energies between 0.6-307.2 GeV. Raw count maps show a superposition of diffuse and point-like emission structures and are subject to shot noise and instrumental artifacts. Using the D3PO inference algorithm, we model the observed photon counts as the sum of a diffuse and a point-like...Go to contribution page
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Amjad Al-Sawad (Ministry of Higher Education and Scientific Research/Iraq)30/07/2015, 12:00To understand what kind of solar or interplanetary events are capable of producing solar energetic particle (SEP) events with proton energies > 90 MeV, and where and when acceleration of such protons starts. We have selected 40 energetic proton events with intensities > 10−3cm−2 sr−1 s−1 MeV−1 at 93.8–94 MeV, detected by the Energetic and Relativistic Nuclei and Electrons (ERNE) instrument...Go to contribution page
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Andrea Chiavassa (Universita` di Torino)30/07/2015, 12:00In this contribution we present the results of a search for large scale anisotropies performed, using the East-West method, with the whole data set of the KASCADE-Grande experiment. The counts distribution in sidereal time intervals of 20 minutes, obtained applying the East-West analysis technique (correctly removing instrumental and atmospheric effects), is analyzed in terms of a dipole...Go to contribution page
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423. RCW 86 an extended SNR viewed at high energy with the new Fermi-LAT Pass 8 event reconstructionBenjamin Condon (CNRS)30/07/2015, 12:00Supernovae Remnants (SNRs) are thought to be the primary source of galactic cosmic rays observed on Earth. Detected in radio, infrared, X-rays and at high (GeV) and very high energy (TeV) gamma rays, RCW 86 is a good candidate for efficient particle acceleration and might be the remnant of the historical supernova SN 185. Using more than 6 years of data acquired by the Fermi Large Area...Go to contribution page
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Dr Marcos Santander (Barnard College, Columbia University)30/07/2015, 12:00A potential clue to finding the long-sought-after sources of cosmic rays is the recent observation of an astrophysical flux of high-energy neutrinos by the IceCube detector, since these possibly originate in hadronic interactions near cosmic-ray accelerators. While the neutrino sky map shows no indication of point sources so far, it is possible to utilize the sensitivity of TeV Cherenkov...Go to contribution page
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Dr Ralf Matthias Ulrich (KIT - Karlsruhe Institute of Technology (DE))30/07/2015, 12:00There are two main points, where the data from a fixed-target experiment with LHC beam will contribute unique information. Firstly, to better understand the inclusive flux of atmospheric neutrinos at very high, PeV, energies. Secondly, to the apparent over-abundance of GeV muons in ultra-high energy extensive air showers. To contribute towards answering these questions, the experimental...Go to contribution page
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Dr Tanguy Pierog (KIT)30/07/2015, 12:15In detailed air shower simulations, the uncertainty in the prediction of shower observable for different primary particles and energies is currently dominated by differences between hadronic interaction models. With the results of the first run of the LHC, the difference between post-LHC model predictions has been reduced at the same level than experimental uncertainties of cosmic ray...Go to contribution page
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Azadeh Keivani (Pennsylvania State University)30/07/2015, 12:15We present the results of archival coincidence analyses between public neutrino data from the 40-string and 59-string configurations of IceCube (IC40 and IC59) with contemporaneous public gamma-ray data from Fermi LAT and Swift. Our analyses have the potential to discover statistically significant coincidences between high-energy neutrinos and gamma-ray signals, and hence, possible...Go to contribution page
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Roberto Iuppa (Universita e INFN Roma Tor Vergata (IT))30/07/2015, 12:15Deviations from isotropy in the cosmic ray arrival direction distribution indicate the laboratory reference frame moving with respect to the cosmic radiation. When data are ordered in sidereal time, any effect is of great importance, as it may trace potential sources of cosmic rays and probe their propagation through magnetic fields. For the same reason, to decipher results implies unfolding...Go to contribution page
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Gerd Puehlhofer (IAAT)30/07/2015, 12:15Amongst the population of TeV gamma-ray sources detected with the High Energy Stereoscopic System (H.E.S.S.) in the Galactic plane, clearly identified supernova remnant (SNR) shells constitute a small but precious source class. TeV-selected SNRs are prime candidates for efficient cosmic-ray acceleration. In this work, we present new SNR candidates that have been identified in the entire...Go to contribution page
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Eric Christian (NASA/GSFC)30/07/2015, 12:15Over the last seventy years, solar energetic particle (SEP) ground level events (GLEs) have been observed by ground-based neutron monitors and muon telescopes at a rate of slightly more than one per year. Ground-based detectors only measure secondary particles, and matching their observations with SEP in-situ measurements at lower energies from spacecraft has been difficult. Now, the Payload...Go to contribution page
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Mathieu Chrétien (LPNHE CNRS/IN2P3)30/07/2015, 14:00Constraining photon dispersion relation from observations of the Vela pulsar with H.E.S.S ------------------------------------------------------------------------ *M.Chrétien, J. Bolmont, A. Jacholkowska, for the H.E.S.S. collaboration* Some approaches to Quantum Gravity (QG) predict a modification of the dispersion relations also known as a Lorentz Invariance Violation. The effect is...Go to contribution page
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Olivier Deligny (CNRS/IN2P3)30/07/2015, 14:00The large-scale distribution of arrival directions of high-energy cosmic rays is a key observable in attempts to understand their origin. The dipole and quadrupole moments are of special interest in revealing potential anisotropies. An unambiguous measurement of these moments as well as of the full set of spherical harmonic coefficients requires full-sky coverage. This can be achieved by...Go to contribution page
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Anita Reimer (University of Innsbruck)30/07/2015, 14:00Neutrino production in jetted AGN is linked to hadronic processes such as photomeson production. The same interaction predicts also high-energy photons, mostly via neutral pion decay. While neutrinos escape the source unattenuated, the hadronically produced high-energy photons and pairs initiate pair cascades in most cases which re-distribute their energy to lower frequencies where photons can...Go to contribution page
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Dr Leonid Ksenofontov (Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS)30/07/2015, 14:00A nonlinear kinetic theory of cosmic ray (CR) acceleration in supernova remnants (SNRs) is employed to re-examine the nonthermal properties of the remnant of SN 1987A for an extended evolutionary period of 5-50 yr. This spherically symmetric model is approximately applied to the different features of the SNR which consist of a Blue Supergiant (BSG) wind and bubble, and the swept-up...Go to contribution page
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Julien Masbou30/07/2015, 14:00The XENON program aims at the direct detection of dark matter WIMPs with liquid xenon as target and detecting material. With detectors of increasing target mass and decreasing background, XENON has achieved competitive limits on WIMP-nucleon interaction couplings, but also on axions and axion-like particles. The XENON100 detector has been ongoing at the Laboratori Nazionali del Gran Sasso in...Go to contribution page
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Stefan Klepser (DESY)30/07/2015, 14:15The H.E.S.S. Galactic Plane Survey (HGPS) constitutes the deepest scan of the inner Milky Way in TeV gamma rays to date. The dominant class of objects in this 10-year survey are Galactic pulsar wind nebulae (PWNe). Aside from a uniform reassessment of the observational parameters of PWNe already found in the past years, the HGPS for the first time allows for the extraction of flux upper...Go to contribution page
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Imen Al Samarai30/07/2015, 14:15The large-scale distribution of arrival directions of high-energy cosmic rays carries major clues to understand their origin. The Pierre Auger Collaboration has implemented different analyses to search for dipolar and quadrupolar anisotropies in different energy ranges spanning four orders of magnitude. A common phase $\approx 270^\circ$ of the first harmonic modulation in right-ascension was...Go to contribution page
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Fabio Zandanel (University of Amsterdam)30/07/2015, 14:15Cosmic-ray (CR) protons can accumulate for cosmological times in clusters of galaxies. Their hadronic interactions with protons of the intra-cluster medium (ICM) generate secondary electrons, gamma-rays and neutrinos. In light of the high-energy neutrino events recently discovered by the IceCube observatory, we estimate the contribution from galaxy clusters to the diffuse gamma-ray and...Go to contribution page
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Ms Yayoi Tomono (Tokai University)30/07/2015, 14:15Recent X-ray observations of active galactic nuclei (AGNs) have revealed the widespread existence of ultra fast outflows (UFOs), i.e. powerful outflows of baryonic material with velocities $>$10,000 km s$^{-1}$($\sim$0.03 c), seen as variable, blueshifted absorption lines of ionized heavy elements. They have been interpreted as winds driven by the accretion disk, and may be responsible for...Go to contribution page
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Kai Martens (The University of Tokyo)30/07/2015, 14:15XMASS is an experimental program at the Kamioka Observatory in Japan designed for low energy, low background dark matter searches and neutrino physics. The core technology is a self shielding single-phase liquid xenon detector optimized for maximum scintillation light collection. In this talk we describe its current implementation and discuss its general performance after its 2013 refurbishment.Go to contribution page
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650. Arrival directions of the highest-energy cosmic rays detected with the Pierre Auger ObservatoryJulien Aublin (urn:Google)30/07/2015, 14:30We present the results of a search for small scale anisotropies in the distribution of arrival directions of ultra-high energy cosmic rays recorded at the Pierre Auger Observatory. The data set, gathered in ten years of operation, includes arrival directions with zenith angles up to $80^\circ$, and is about three times larger than that used in earlier studies. We update the test based on...Go to contribution page
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Josefa Becerra Gonzalez (NASA GSFC)30/07/2015, 14:30The detection of Flat Spectrum Radio Quasars (FSRQs) in the Very High Energy (VHE, E>100 GeV) range is challenging, mainly because of their steep soft spectra in this energy band. Up to now only four FSRQs have been detected in VHE, three of them discovered by MAGIC. The gamma-ray observations observations at such high energies are crucial to understand their emission, especially to constrain...Go to contribution page
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Walter Winter (DESY)30/07/2015, 14:30We discuss the interplay between the high-energy neutrino flux observed by IceCube and cosmic ray observations. One question is if the neutrino flux can be reconciled with the paradigm that it comes from the sources of the UHECRs. Another one is how many of these neutrinos can stem from cosmic ray interactions with hydrogen in the Milky Way if the chemical composition of the cosmic rays is...Go to contribution page
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Atsushi Takeda (University of Tokyo)30/07/2015, 14:30XMASS-I, the first phase of the XMASS project, is a direct detection dark matter experiment using 832 kg of liquid xenon. The key idea to reduce the background at low energies in XMASS is to use liquid xenon itself as a shield. In this analysis the clean core of the 832 kg liquid xenon volume is used as sensitive fiducial volume by eliminating the volume near the wall which suffers from beta...Go to contribution page
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Dr Takashi SAKO (Institute for Cosmic Ray Research, University of Tokyo)30/07/2015, 14:30The Crab Nebula is the standard calibration candle for TeV cosmic gamma-ray experiments. None of those experiments has detected gamma rays above 100 TeV from the Crab Nebula, and the best upper limits have been given by the CASA-MIA experiment. In the circumstances, it is a common understanding that the energy spectrum of the Crab Nebula can be reproduced well by a mechanism based on the...Go to contribution page
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Francisco Salesa Greus (The Pennsylvania State University)30/07/2015, 14:45The High Altitude Water Cherenkov (HAWC) Observatory is a TeV gamma-ray detector which has been completed in early 2015. HAWC started science operations in August 2013 with a fraction of the detector taking data. Several known gamma-ray sources have been already detected with the first HAWC data. Among these sources, the Crab Nebula, the brightest steady gamma-ray source at very high energies...Go to contribution page
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Dr Maria Petropoulou (Purdue University)30/07/2015, 14:45The recent IceCube discovery of 0.1-1 PeV neutrinos of astrophysical origin opens up a new era for high-energy astrophysics. There are various astrophysical candidate sources, including active galactic nuclei (AGN) and starburst galaxies. Yet, a firm association of the detected neutrinos with one (or more) of them is still lacking. This talk will focus on the possible association of IceCube...Go to contribution page
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Mrs Lea Jouvin (APC)30/07/2015, 14:45The center of our Galaxy hosts a Super-Massive Black Hole (SMBH) of about $4 \times $ 10$^6$ M$_{sun}$. Since it has been argued that the SMBH might accelerate particles up to very high energies, its current and past activity could contribute to the population of Galactic cosmic-rays (CRs). Additionally, the condition in the Galactic Center (GC) are often compared with the one of a starburst...Go to contribution page
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Hiroyuki Sagawa (RIKEN), Igor Tkachev (Russian Academy of Sciences (RU)), Peter Tinyakov (Universite Libre de Bruxelles (ULB))30/07/2015, 14:45The Telescope Array has collected 7 years of data and accumulated the largest UHECR data set in the Northern hemisphere. We make use of these data to search for large- and small-scale anisotropy of UHECR. At small angular scales we examine the data for clustering of events and correlations with various classes of putative sources. At large angular scales we will present a blind search for...Go to contribution page
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Joao de Mello Neto (Federal University of Rio de Janeiro)30/07/2015, 14:45The DAMIC (Dark Matter in CCDs) experiment uses high resistivity scientific grade CCDs to search for dark matter. The CCD's low electronic noise allows an unprecedently low energy threshold of few tens of eV that makes it possible to detect silicon recoils resulting from interactions of low mass WIMPs. In addition the CCD's high spatial resolution and the excellent energy response ...Go to contribution page
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Dr Lili Yang (University of Nova Gorica)30/07/2015, 15:00Accelerated ultrahigh-energy cosmic rays (UHECRs) in long-lived gamma-ray burst (GRB) blast waves are expected to interact with X-ray to optical-infrared photons of GRB afterglow to produce PeV-EeV neutrinos. These long-lived neutrino fluxes can last for a time scale of days to years, in contrast to the prompt neutrino fluxes under the internal shocks model with a time scale of seconds to...Go to contribution page
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Prof. Justin Vandenbroucke (University of Wisconsin - Madison)30/07/2015, 15:00The excess of positrons in cosmic rays above ∼10 GeV has been a puzzle since it was discovered. Possible interpretations of the excess include acceleration of positron secondaries in local supernova remnants or pulsars, or the annihilation or decay of dark matter particles. To distinguish between these interpretations, the measurement of the positron fraction must be extended to higher...Go to contribution page
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320. Search for Dark Matter annihilations in the Sun using the completed IceCube neutrino telescope.Mohamed Rameez (Universite de Geneve (CH))30/07/2015, 15:00If Dark Matter consists of Weakly Interacting Massive Particles (WIMPs), these might be gravitationally captured in the Sun where they could self-annihilate into standard model particles. Terrestrial neutrino detectors such as IceCube can observe this as an enhanced neutrino flux in the direction of the Sun. Sensitivity has improved with respect to previous searches due to better analysis...Go to contribution page
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Dr Kevin Meagher (Université libre de Bruxelles)30/07/2015, 15:00The Crab Nebula is the brightest source in the very-high-energy (VHE) gamma-ray sky and one of the best studied non-thermal objects. The dominant VHE emission mechanism is believed to be inverse Compton scattering of low energy photons on relativistic electrons. While it is unclear how the electrons are accelerated to energies of 1016 eV, it is general consensus that the ultimate...Go to contribution page
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Kazumasa Kawata (ICRR, University of Tokyo)30/07/2015, 15:00The Telescope Array Experiment has observed a cluster of ultrahigh energy cosmic rays, $E>57$ EeV, called the Hotspot. This was reported in (Abbasi et al., ApJ, 790, L21 (2014)), and was centered in Ursa Major. Using the first five years of data collected by the TA surface detector, the chance probability of this hotspot in an isotropic cosmic-ray sky was calculated to be 3.4$\sigma$. In this...Go to contribution page
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Dr Antonio Marinelli (Physics Institute, Pisa University)30/07/2015, 15:15During the last decade the innermost part of our galaxy has been observed as a gamma-ray emitting region described by a ridge-like surface. In particular, in 2005 the H.E.S.S. collaboration reported the measurement of a power-law spectrum with index close to -2.3, between 0.1 and 10 TeV, strongly correlated with dense molecular clouds in that region. Last year the VERITAS collaboration...Go to contribution page
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Christoph Tönnis (Universitat de Valencia)30/07/2015, 15:15The indirect search for dark matter is a topic of utmost interest in neutrino telescopes. The ANTARES detector is located on the bottom of the Mediterranean Sea 40 km off the southern french coast. ANTARES has been taking data since 2007 when the first half of the detector was installed. In this talk the results of the different analyses for dark matter signals from different potential...Go to contribution page
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Roberta Zanin (Universitat de Barcelona)30/07/2015, 15:15The Crab pulsar wind nebula (PWN) is one of the best studied astrophysical objects. Due to its brightness at all wavelengths, precise measurements are provided by different kind of instruments, allowing for many discoveries, later seen in other non-thermal sources, and a detailed examination of its physics. Most of the theoretical models for PWN emission are, in fact, based on Crab nebula...Go to contribution page
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Dr Haoning He (UCLA)30/07/2015, 15:15The Telescope Array (TA) collaboration has reported a hotspot, a cluster of 19 cosmic ray events with energies above $57~\rm EeV$ in a circle of $20^\circ$ radius centered at ${\rm R.A.}(\alpha)=146.^\circ7$, ${\rm Dec.}(\delta)=43.^\circ2$. We explore the hypothesis that the hotspot could originate from a single source. By considering the energy dependent deflections that are expected to...Go to contribution page
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Silvia Dalla (University of Central Lancashire)30/07/2015, 15:30In recent years, a wealth of spacecraft measurements of heavy ion solar energetic particles have become available, thanks to data from the ACE and STEREO spacecraft. Interesting features in heavy ion time intensity profiles, such as the decay of the Fe/O ratio over time in some events, have been observed. Heliospheric propagation effects have been invoked in the literature as a possible cause...Go to contribution page
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Richard Mewaldt (Caltech)30/07/2015, 15:30During solar cycle 23 it has been possible to routinely measure Solar Energetic Particle (SEP) Events over ~360 deg. in longitude with the combination of STEREO and near-Earth assets like ACE, SOHO, and GOES. It is found that SEPs are distributed more broadly in longitude than was appreciated based on single-point measurements. We report on a survey of large SEP events from 3 points of view as...Go to contribution page
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Vladimir Novotny (Charles University in Prague)30/07/2015, 15:30We introduce a simple branching model for the development of hadronic showers in the Earth's atmosphere. Based on this model, we show how the size of the pionic component followed by muons can be estimated. Several aspects of the subsequent muonic component are also discussed. We focus on the energy evolution of the muon production depth. We also estimate the impact of the primary...Go to contribution page
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Prof. Kenji Yoshida (Shibaura Institute of Technology)30/07/2015, 15:30The Fermi-LAT 3rd source catalog (3FGL) provides spatial, spectral, and temporal properties for 3033 gamma-ray sources. While 2041 sources in the 3FGL are associated with AGNs (58% of the total), pulsars (5%) and the other classes (4%), 992 sources (33%) remain as unassociated sources. In recognizing source classes for unassociated gamma-ray sources of the Fermi-LAT source catalogs, various...Go to contribution page
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Lu Lu (Chiba University)30/07/2015, 15:30The next upgrade of IceCube Neutrino observatory (IceCube-Gen2) enhances the detection capability of neutrinos with a few hundred TeV energies or greater by the increased instrumented volume in the glacier ice. Enhancement of the optical sensor performance in detecting ultra-violet photons can be a key factor for IceCube-Gen2 to achieve a higher sensitivity as more Cherenkov lights are...Go to contribution page
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Mathieu Boudaud (LAPTh Annecy France)30/07/2015, 15:30Antiprotons are regarded as a powerful probe for Dark Matter (DM) indirect detection and indeed current data from PAMELA have been shown to lead to stringent constraints. However, in order to exploit their constraining/discovery power properly and especially in anticipation of the exquisite accuracy of upcoming data from AMS, great attention must be put into effects (linked to their...Go to contribution page
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Dr Renat Sibatov (Ulyanovsk State University, Ulyanovsk, Russia)30/07/2015, 15:30Cosmic Ray anisotropy is a key element in the quest to find the origin of the enigmatic particles. A well known problem is that although most of the likely sources are in the Inner Galaxy, the direction from which the lowest energy particles (less than about 1 PeV) come is largely from the Outer Galaxy. We show that this can be understood taking into account a possible reflection of charged...Go to contribution page
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Stefan Klepser (DESY)30/07/2015, 15:30
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Brian Wundheiler (Instituto de Tecnologias en Deteccion y Astroparticulas)30/07/2015, 15:30Although the nature of ultra high energy cosmic rays is still largely unknown, significant progress has been achieved in last decades with the construction of the large arrays that are currently taking data. One of the most important pieces of information comes from the chemical composition of primary particles. It is well known that the muon content of air showers generated by the interaction...Go to contribution page
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Chi WANG (USTC)30/07/2015, 15:30A method is proposed for electron/hadron discrimination for 3D imaging BGO calorimeter DAMPE (DArk Matter Particle Explorer) experiment. The technique uses isolated bars which are extracted by comparing to their nearby bars in the same layer. We find that the energy distribution and location of isolated bars are highly sensitive to the type of interaction of incident particle. Based on the...Go to contribution page
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Mr Ori Weiner (Columbia University)30/07/2015, 15:30In imaging atmospheric Cherenkov telescope arrays (IACTs), the standard method of statistically inferring the existence of a source is based on the maximum likelihood method of Li&Ma (1983). We will present a new statistical approach, also based on maximum likelihood theory, which takes into account a priori knowledge of the source light curve. This approach is especially useful for...Go to contribution page
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Ralph Richard Engel (KIT - Karlsruhe Institute of Technology (DE))30/07/2015, 15:30The event generator Sibyll can be used for the simulation of hadronic multiparticle production up to the highest cosmic ray energies. It is optimized for providing an economic description of those aspects of the expected hadronic final states that are needed for the calculation of air showers and atmospheric lepton fluxes. New measurements from fixed target and collider experiments, in...Go to contribution page
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Mr Thomas Pöschl (Technische Universität München)30/07/2015, 15:30Measuring cosmic antimatter fluxes probes many astrophysical processes. The abundancies and energy spectra of antiparticles support the understanding of the creation and propagation mechanisms of cosmic rays in the Universe. Deviations from theoretical predictions may hint to exotic sources of antimatter or inaccuracies in our understanding of the involved processes. Specifically,...Go to contribution page
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Xi Luo (SIGMA Weather Group, State Key Laboratory of Space Weather, Center for Space Science and Applied Research, CAS, Beijing, China)30/07/2015, 15:30Based on a hybrid galactic cosmic ray transport model, which incorporated MagnetoHydroDynamics (MHD) global heliospheric data into Parker's cosmic ray transport equation, we studied the behaviour of the transport of galactic cosmic rays near the heliopause (HP). We found that: (1) By increasing the ratio of the parallel diffusion coefficient to the perpendicular diffusion coefficient in the...Go to contribution page
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Kai Krings (Technische Universität München, Physik-Department)30/07/2015, 15:30A next generation of IceCube is under design targeting the Precision IceCube Next Generation Upgrade (PINGU) for the neutrino mass ordering and an extended array for astrophysical neutrino sources. A new level of precision is needed in order guarantee improved performances respect IceCube. A better calibration system will enable a better understanding of the ice and will therefore...Go to contribution page
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Dr Sergio Dasso (Instituto de Astronomía y Física del Espacio (UBA-CONICET), Buenos Aires, Argentina. Departamento de Ciencias de la Atmósfera y los Océanos and Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (UBA), Buenos Aires, Argentina)30/07/2015, 15:30The Latin American Giant Observatory (LAGO) consist in a network of water-Cherenkov detectors (WCD) located in nine countries of Latin America, to study with extreme detail the flux of cosmic rays (CRs) from ground level. The main scientific aims are oriented to address several problems of astrophysics, space physics and atmospheric physics. In particular, LAGO has started to develop an...Go to contribution page
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Piera Sapienza (INFN)30/07/2015, 15:30KM3NeT is the next generation neutrino telescope in the Mediterranean Sea employing the technique of Cherenkov photon detection. The Acoustic Positioning System (APS) is a mandatory sub-system of KM3NeT that must provide the position of the telescope’s mechanical structures, in a geo-referenced coordinate system. The APS is important for a safe and accurate deployment of the mechanical...Go to contribution page
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Felix Spanier (North-West University)30/07/2015, 15:30Active Galactic Nuclei have been in the focus of gamma-ray telescopes for the past years. With the ever growing sample of AGN the need for physically motivated, self-consistent modeling is also growing. The major questions to be answered by models are: What are the main constituents of AGN jets? What are the acceleration mechanisms? Are AGN possible accelerators for UHECR and possible...Go to contribution page
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Dr Hans Peter Dembinski (Bartol Institute, Dept of Physics and Astronomy, University of Delaware)30/07/2015, 15:30The IceCube MasterClass is an outreach project of the IceCube experiment at South Pole for 9th to 12th grade school students. The MasterClass is designed to provide an authentic astrophysics research experience by demonstrating typical elements of IceCube research. It is a full-day experience of engaging activites, eductional talks, and scripted analyses, where students can reproduce the main...Go to contribution page
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Robert Brose (DESY)30/07/2015, 15:30RX J1713-3946 is the brightest shell-type supernova remnant (SNR) of the TeV gamma-ray sky. Earlier Fermi-LAT results on low energy gamma-ray emission suggested that, despite large uncertainties in the background determination, the spectrum is inconsistent with a hadronic origin. We update the GeV-band spectra using improved estimates for the diffuse galactic gamma-ray emission and more than...Go to contribution page
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Mr Firas Al-Hamadani (University of Turku and University of Basrah)30/07/2015, 15:30On March 17-18, 2003 the Energetic and Relativistic Nuclei and Electrons (ERNE) instrument on board the Solar and Heliospheric Observatory (SOHO) spacecraft observed three solar energetic particle (SEP) events in rapid succession (within 26 hours) from the same active region of the Sun. The first event was weak and proton intensity enhancement was observed only below 25 MeV. No coincident...Go to contribution page
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Marcos López Moya (University Complutense of Madrid)30/07/2015, 15:30The MAGIC telescopes were built with the aim of achieving the lowest possible energy threshold among the current generation of Cherenkov telescopes. This was mandatory to detect sources with emission mainly below 100 GeV, as distant AGNs and pulsars. In 2009, the second MAGIC telescope started operation, and in the last years, a major upgrade of the system took place. One of the main...Go to contribution page
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Dr Toshiyuki Nonaka (Institute for Cosmic Ray Research, University of Tokyo)30/07/2015, 15:30The Telescope Array (TA) experiment is located in the western desert of Utah, USA and observes ultra high energy cosmic rays in the northern hemisphere. In the highest part of the energy region, the cosmic ray energy spectrum shape carries information of the source density distribution. We search for directional differences in the energy spectrum shape. In this study, observed cosmic ray...Go to contribution page
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Michael Alania (Siedlce University), Dr Renata Modzelewska (Siedlce University)30/07/2015, 15:30We study seasonal distributions of the visually observed cloudless days (CD) and cloudless nights (CN) at Abastumani Astrophysical Observatory (41.75N, 42.82E; Georgia) and the galactic cosmic ray (GCR) intensity in 1957-1993. The annual variations of monthly numbers of CD and CN have been observed, with maximum in August for CD and in September for CN. During geomagnetic disturbances it is...Go to contribution page
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Simon Bacholle (APC- Paris Diderot university)30/07/2015, 15:30Using an integrated propagation code that takes into account particle energy losses, nuclear photo-dissociation and deflections by Galactic and extragalactic magnetic fields, we simulate representative sky maps of ultra-high-energy cosmic rays over the entire sky, for a wide range of astrophysical scenarios, with different source density, spectrum and composition. We analyze these sky maps...Go to contribution page
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carlos medina-hernandez (colorado school of mines)30/07/2015, 15:30The Fluorescence Detector (FD) at the Pierre Auger Observatory measures the intensity of the scattered light from laser tracks generated by the Central Laser Facility (CLF) and the eXtreme Laser Facility (XLF) to monitor and estimate the aerosol optical depth (tau(z,t)). These measurements are important to have unbiased and reliable FD reconstruction of the energy of the primary cosmic ray,...Go to contribution page
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Abdullrahman Maghrabi (King Abdulaziz City For Science and Technology)30/07/2015, 15:30To study the dependence of the muon rate flux on temperature we need to have some measure of atmospheric temperature above the detection site. Atmospheric weighted temperature, known also as the effective temperature, is defined as the temperature of an isothermic atmosphere that reflects the temperature of the real atmosphere with its varying conditions. In this paper, the influence of the...Go to contribution page
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Andreas Haungs (Karlsruhe Institute of Technology)30/07/2015, 15:30The findings so far of the Pierre Auger Observatory and those of the Telescope Array define some requirements for a possible next generation global cosmic ray observatory: it needs to be considerably increased in size, it needs good sensitivity to composition, and it has to cover the full sky. At the Pierre Auger Observatory, AugerNext aims to conduct some innovative initial research studies...Go to contribution page
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Gaetano Salina (Istituto Nazionale di Fisica Nucleare)30/07/2015, 15:30The quality of the physics results, derived from the analysis of the data collected at the Pierre Auger Observatory depends heavily on the calibration and monitoring of the components of the detectors. It is crucial to maintain a database containing complete information on the absolute calibration of all photomultipliers and their time evolution. The low rate of the physics events implies that...Go to contribution page
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Mr Jorge Cotzomi (FCFM BUAP)30/07/2015, 15:30For the study of Extensive Atmospheric Showers (EAS) is essential the reconstruction method of Cherenkov radiation produced by charged secondary particles. In the recent studies it was shown that to greater accuracy of the reconstruction parameters of the EAS appears as a dependence of the spatial distribution of Cherenkov radiation as function of the azimuth angle, this due to the influence...Go to contribution page
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Dr Thomas Weisgarber (for the HAWC Collaboration)30/07/2015, 15:30The High Altitude Water Cherenkov (HAWC) Gamma Ray Observatory monitors the gamma-ray sky in the 100 GeV to 100 TeV energy range with >95% uptime and unprecedented sensitivity for a survey instrument. The HAWC Collaboration has implemented an online flare monitor that detects episodes of rapid flaring activity from extragalactic TeV sources in the declination band from -26 to 64 degrees. This...Go to contribution page
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Richard Bartels (University of Amsterdam)30/07/2015, 15:30In the paradigm of ΛCDM, structures form hierarchically, implying that large structures contain smaller substructures. These so-called subhalos can enhance the dark matter annihilation signal that one expects to see from a given host halo, the effect of which is called the boost factor. In the literature this boost factor is typically calculated assuming a density profile for the substructure,...Go to contribution page
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Anastasia Petukhova (Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy)30/07/2015, 15:30Acceleration of solar energetic particles by the shock generated by the coronal mass ejection is calculated. The external boundary of coronal mass ejection and the shock front are specified as the segments of spherical surfaces with the different radii moving in coordination. Nonstationarity of process, spherical symmetry and adiabatic losses of particle energy in the extending environment are...Go to contribution page
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Paolo Brogi (Universita degli studi di Siena (IT))30/07/2015, 15:30CALET is a space mission currently in the final phase of preparation for a launch to the International Space Station (ISS), where it will be installed on the Exposed Facility of the Japanese Experiment Module (JEM-EF). In addition to high precision measurements of the electron spectrum, CALET will also perform long exposure observations of cosmic nuclei from proton to iron and will detect...Go to contribution page
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Gabriele Bigongiari (Universita degli studi di Siena (IT))30/07/2015, 15:30CALET is a space mission currently in the final phase of preparation for a launch to the International Space Station (ISS), where it will be installed on the Exposure Facility of the Japanese Experiment Module (JEM-EF). One of the main science goals of the experiment is the measurement of the inclusive electron (+positron) spectrum. By integrating a sufficient exposure on the ISS, CALET will...Go to contribution page
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Dr Alberto Carramiñana Alonso (INAOE)30/07/2015, 15:30The Latin American Giant Observatory (LAGO) is an international network of water-Cherenkov detectors (WCD) set in different sites across Latin America. In México, on the top of the Sierra Negra volcano at 4530 m a.s.l., LAGO has completed its first instrumented detector of an array, consisting of a cylindrical WCD with 7.3 m in diameter and 1 m of height, with a total detection area of $40$...Go to contribution page
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Mr Motoki Hayashi (Shinshu University)30/07/2015, 15:30The main calibration items of Fluorescence Detector (FD) observation are the fluorescence yield, the atmospheric attenuation and the detector sensitivity. In 2012-2013, we conducted a joint TA-Auger calibration campaign by a flying device mounted with an ultraviolet LED as a standard light source. This device is called an octocopter, and was built by KIT. An octocopter has excellent...Go to contribution page
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Roman Hiller (KIT)30/07/2015, 15:30The Tunka Radio Extension (Tunka-Rex) is an array of 44 radio antenna stations, constituting a radio detector for air showers. It is an extension to Tunka-133, an air-Cherenkov detector in Siberia, which is used as an external trigger for Tunka-Rex and provides a reliable reconstruction of energy and shower maximum. Each antenna station consists of two perpendicularly aligned active...Go to contribution page
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Jörg Hörandel (Ru Nijmegen/Nikhef)30/07/2015, 15:30Extensive air showers create short nanosecond-scale pulses in the radio frequencies. These pulses have been measured successfully in the past years at the Low-Frequency Array (LOFAR). Due to the short duration and emission of the signal in the atmosphere, methods based on flux calibration of known sources as used in radio astronomical observations cannot be applied to establish an absolute...Go to contribution page
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Bokkyun Shin (Hanyang University)30/07/2015, 15:30The Electron Light Source (ELS) is a linear accelerator used to perform energy calibration of the fluorescence detectors (FD) in the Telescope Array experiment. The ELS shoots a beam of 40 MeV electrons into the atmosphere 100 m in front of the Black Rock Mesa FD. Air fluorescence light is detected from nitrogen molecule excitation by the ELS electron beam. An end-to-end calibration from...Go to contribution page
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Alexandre Creusot (Universite de Paris VII (FR))30/07/2015, 15:30KM3NeT is the next generation neutrino telescope being installed in the Mediterranean Sea. The first detection unit of the telescope is ready for installation in the deep Mediterranean Sea in the summer of 2015. Eighteen digital optical modules have been mounted on a vertical string for the detection of the Cherenkov light emitted by muons induced by up-going neutrinos. This paper reports on...Go to contribution page
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Prof. Rostislav Kokoulin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))30/07/2015, 15:30Measurements of the energy spectra of cascade showers generated due to interactions of penetrating cosmic ray particles in massive water/ice detectors is one of the main methods of the study of the energy characteristics of the fluxes of muons and neutrinos. In the present paper, results of investigations of cascades initiated by inclined muons in the Cherenkov water detector NEVOD with a...Go to contribution page
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German Gomez-Vargas (Pontifical Catholic University of Chile)30/07/2015, 15:30The positron fraction measured by the space-based detectors PAMELA, {\it Fermi}-LAT and AMS-02 presents anomalous behaviour as energy increase. In particular AMS-02 observations provide compelling evidence for a new source of positrons and electrons. Its origin is unknown, it can be non-exotic (e.g. pulsars), be dark matter (DM) or maybe a mixture. We test the gravitino of bilinear R-parity...Go to contribution page
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Helene Laffon (CENBG)30/07/2015, 15:30The millisecond pulsar (MSP) luminosity distribution is useful to address e.g. contributions to the distribution of the diffuse positrons and gamma rays within our Galaxy. Gamma-ray luminosity versus spin-down power (Edot) is also a key observable to constrain emission models. The Shklovskii effect consists of an artificial increase of the apparent period derivative value (Pdot) over the...Go to contribution page
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Prof. Vladimir Vassiliev (University of California Los Angeles)30/07/2015, 15:30The design of a 9.5-m prototype Schwarzschild-Couder telescope (pSCT) with an aplanatic two-mirror optical system has been developed to evaluate its capabilities for the future Cherenkov Telescope Array Observatory (CTAO). The construction of this novel imaging atmospheric Cherenkov telescope (IACT) is scheduled for early autumn of 2015 at the Fred Lawrence Whipple Observatory in Southern...Go to contribution page
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Stephen Kahler (Air Force Research Laboratory)30/07/2015, 15:30We review recent work on 111 Fe-rich impulsive solar energetic (~3 MeV/nuc) particle (SEP) events observed from 1994 to 2013. Strong elemental abundance enhancements scale with A/Q, the ion mass-to-charge ratio, as (A/Q)^(a), where 2 < a < 8 for different events. Most Fe-rich events are associated with both flares and coronal mass ejections (CMEs), and those with larger a are associated with...Go to contribution page
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Mr Hari Haran Balakrishnan (HECR Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India and GRAPES-3 Experiment, Cosmic Ray Laboratory, Ooty 643 001, India)30/07/2015, 15:30For the analysis of the GRAPES-3 Muon data, large scale Monte Carlo simulations are required. These simulations are performed using the CORSIKA simulation package developed by the KIT group. However, the geomagnetic cutoff rigidity varies with direction, therefore, a constant threshold for selection of primary energy results in generation of a large number of events that are subsequently...Go to contribution page
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Prof. Kumar Rajiv (Government Pench Valley post Graduate College Parasia)30/07/2015, 15:30ABSTRACT: In this paper,we have provided an overview of effects of cosmic radiation on terrestrial processes such as cloud formation,cloud coverage, lightning,global electrical circuit ,etc.It is evolved empirically that cosmic rays control short-term and long-term variations in climate.we also explained that how additional ionization produced by cosmic rays could enhance charging rate and...Go to contribution page
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Susumu Inoue (Institute for Cosmic Ray Research, University of Tokyo)30/07/2015, 15:30There is mounting evidence for the widespread existence of ultra-fast outflows in active galactic nuclei, which are powerful outflows of baryonic material approaching mildly relativistic velocities, observed as variable, blue-shifted X-ray absorption lines of ionized heavy elements. Occurring in both radio-loud and radio-quiet objects, they are plausibly interpreted as winds driven by the...Go to contribution page
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Mr Jon Paul Lundquist (Telescope Array Project)30/07/2015, 15:30A simple cosmic ray track finding pattern recognition analysis (PRA) method for fluorescence detectors (FD) has been developed which significantly improves Xmax resolution and its dependence on energy. Events which have a clear rise and fall in the FD view contain information on Xmax that can be reliably reconstructed. Shower maximum must be extrapolated for events with Xmax outside the field...Go to contribution page
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Ms Xilu Wang (University of Illinois at Urbana and Champaign)30/07/2015, 15:30In star-forming galaxies, gamma rays are mainly produced through the collision of high-energy protons in cosmic rays and protons in the interstellar medium (ISM) (i.e. cosmic ray-induced π0 γ-radiation). For a “normal” star-forming galaxy like the Milky Way, most cosmic rays escape the Galaxy before such collisions, but in starburst galaxies with dense gas and huge star formation rate, most...Go to contribution page
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Catia Grimani (University of Urbino "Carlo Bo")30/07/2015, 15:30Positrons were discovered in cosmic rays 50 years ago. During the last 25 years, reliable magnetic spectrometer observations consistently revealed an excess of these particles above a few GeV with respect to the expected secondary component. The most recent measurements of the positron flux and the e+/(e++e-) ratio carried out by the Pamela and AMS experiments confirm the average trend of...Go to contribution page
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Amanda Weinstein (Iowa State University)30/07/2015, 15:30The Cygnus region hosts one of the most remarkable star-forming regions in the Milky Way. Indeed, the total mass in molecular gas of the Cygnus X complex exceeds 10 times the total mass of all other nearby star-forming regions. Surveys at all wavelengths, from radio to gamma-rays, reveal that Cygnus contains such a wealth and variety of sources---supernova remnants (SNRs), pulsars, pulsar...Go to contribution page
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Dennis Cazar Ramírez (Universidad San Francisco de Quito)30/07/2015, 15:30Nowadays, one of the most challenging scenarios scientists and scientific communities are facing is the huge amount of data emerging from vast networks of sensors and from computational simulations performed in a diversity of computing architectures and e-infrastructures. In this work we present the strategy of the Latin American Giant Observatory (LAGO) to catalog and preserve a vast amount...Go to contribution page
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Prof. Guiming Le (National Satellite Meteorological Administration, CMA, China)30/07/2015, 15:30To investigate the possible acceleration mechanism for high energy (E>100 MeV) protons, the correlation coefficients (CCs) are calculated between the prompt component intensity (PCI) of E>100 MeV solar proton events (SPEs) and the speed of coronal mass ejections (CMEs), and the soft X-ray (SXR) emission of solar flares. Data analysis shows that the CCs between the PCI of E>100 MeV SPEs and the...Go to contribution page
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Dr Ernst-Jan Buis (TNO)30/07/2015, 15:30Acoustic detection may provide way to observe ultra-high energy cosmic neutrinos, i.e. energies above 10^18 eV, and their extra-galactic sources [1, 2]. The expected flux of cosmic neutrinos with ultra-high energy is low, so that large scale neutrino telescopes are needed for this emerging field of astroparticle physics. Using the acoustic signals induced by a neutrino interaction in water...Go to contribution page
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Stephany Vargas (Escuela Politécnica Nacional)30/07/2015, 15:30The Latin American Giant Observatory (LAGO) Project is an extended Cosmic Ray Observatory mainly oriented to perform basic research in three branches: high energy phenomena, space weather and atmospheric radiation at ground level. To observe the high energy component (over 10 GeV) of Gamma Ray Bursts (GRBs), the LAGO Collaboration is installing Water Cherenkov Detectors (WCDs) in high altitude...Go to contribution page
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Karl-Heinz Kampert (Universität Wuppertal)30/07/2015, 15:30Fluorescence telescopes are an important technique to measure extensive air showers initiated by ultra-high energetic cosmic rays. They detect the longitudinal profile of the energy deposited in the atmosphere by the de-excitation of nitrogen molecules in the UV-range. In the past years the development of photomultiplier tubes (PMT) has led to an increase of more than $30\%$ in photon...Go to contribution page
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Nepomuk Otte (Georgia Institute of Technology)30/07/2015, 15:30We present a development of a novel 11328 pixel silicon photomultiplier (SiPM) camera for use with a ground-based Cherenkov telescope with Schwarzschild-Couder optics as a possible mid-size telescope for the Cherenkov Telescope Array (CTA), which is the next generation very-high-energy gamma-ray observatory. . The finely pixelated camera samples air-shower images with more than twice the ...Go to contribution page
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Jianing Dong (USTC)30/07/2015, 15:30An automatic system has been developed for the batch test of the photomultiplier tubes (PMTs) in the BGO electromagnetic calorimeter (ECAL) of Dark Matter Particle Explorer (DAMPE). There are 616 PMTs (Hamamatsu R5610A-01) used in the BGO ECAL, which are critical for the realization of high dynamic readout and high precision measurement of the scintillation light from BGO crystals. In order to...Go to contribution page
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Asato Orii (University of Tokyo)30/07/2015, 15:30Super-Kamiokande (SK) is a 50-kiloton water Cherenkov detector. It is one of the most sensitive neutrino detectors and can be used for supernova observations by detecting supernova burst neutrinos. Recently, it is reported that Betelgeuse (640ly) is shrinking 15% in 15 years (C. H. Townes et al., 2009). Although this report does not immediately imply the supernova explosion of Beteleuse, it...Go to contribution page
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Shoichi Ogio (Osaka City University)30/07/2015, 15:30TALE, the Telescope Array Low Energy extension is designed to lower the energy threshold to about $10^{16.5}$ eV. The TALE surface detector will include an infill array of 76 scintillation counters (40 with 400 m spacing and 36 with 600 m spacing) and an addition to the TA SD of 27 counters. We have already deployed 35 counters with 400 m spacing in April 2013. For the additional 68 counters,...Go to contribution page
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Keiichi Mase (Chiba University)30/07/2015, 15:30The Askaryan effect is the coherent radio emission of an electron excess in a particle cascade. ARA (Askaryan Radio Array) is being built to observe the Askaryan radiation from ultra high energy neutrino (E > 10PeV) induced showers in ice around the South Pole. In order to study further the characteristics of the coherent emission, and also validate ARA detection system response, we set up...Go to contribution page
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Yoichi Asaoka (Waseda University (JP))30/07/2015, 15:30The CALET project aims at a long duration observation of high energy cosmic rays onboard the International Space Station (ISS). The CALET detector features a very thick calorimeter of 30 radiation-lengths which consists of imaging and total absorption calorimeters. It will directly measure the cosmic-ray electron spectrum in the energy range of 1GeV--20TeV with 2-% energy resolution. ...Go to contribution page
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zhang fei (IHEP)30/07/2015, 15:30The Silicon Tungsten Tracker (STK) is a detector of the DAMPE satellite to measure the incidence direction of high energy cosmic ray. It consists of 6 layers of silicon micro-strip detectors interleaved with Tungsten converter plates. The entire STK contains 73,728 readout channels totally and can be read out according to external average 50 Hz trig. It’s a great challenge for space mission...Go to contribution page
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Olivier Deligny (CNRS/IN2P3)30/07/2015, 15:30The transport of Galactic cosmic rays in both turbulent and regular magnetic fields can be described in terms of diffusion and drift motions. These produce gradients of cosmic-ray densities. The anisotropy resulting from these gradients for an observer located anywhere in the Galaxy is commonly described in terms of a pure dipole moment, the amplitude of which is proportional to the gradient...Go to contribution page
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Lucie Gerard30/07/2015, 15:30The galactic and extragalactic surveys are two of the main proposed legacy projects of the Cherenkov Telescope Array (CTA). Considering Cherenkov telescopes field of view (<10°), the time needed for those projects is large. The many telescopes of CTA will allow taking full advantage of new pointing modes in which telescopes point slightly offset from one another. This divergent pointing mode...Go to contribution page
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Dr Sergey Aleksandrin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 31 Kashirskoe shosse, 115409 Moscow, Russia)30/07/2015, 15:30The results of the observation of short-term and long-term variations of relativistic electron flux in the region of outer radiation belt in satellite experiments ARINA and VSPLESK are presented. Scintillation spectrometers ARINA (on board the Resurs-DK1 Russian satellite, since 2006) and VSPLESK (on board the International Space Station, since 2008), developed by MEPhI, provide continuous...Go to contribution page
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Dr Charles Timmermans (Nikhef/Radboud University)30/07/2015, 15:30The scale and scope of the physics studied at the Pierre Auger Observatory continue to offer significant opportunities for original outreach work. Education, outreach and public relations of the Auger Collaboration are coordinated in a dedicated task whose goals are to encourage and support a wide range of efforts that link schools and the public with the Auger scientists and the science of...Go to contribution page
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Alexander Mishev (INRNE-BAS)30/07/2015, 15:30An important topic in the field of space weather research is estimation of the expected effective dose of aircrew at flight altitudes due to cosmic rays of solar and galactic origin. The primary cosmic ray particles induce a complicated nuclear-electromagnetic-muon cascade in the Earth atmosphere. The secondary particles form the main source of increased exposure at flight latitudes compared...Go to contribution page
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Paolo Desiati (University of Wisconsin - Madison)30/07/2015, 15:30Cosmic ray anisotropy has been observed to be present in a wide energy range by a variety of experiments such as Milagro and the IceCube Observatory. However, a satisfactory explanation has been elusive for more than fifteen years now. A possible solution for the TeV-PeV cosmic ray anisotropy is the introduction of turbulent magnetic interactions on the arrival direction. We perform test...Go to contribution page
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OLEG DALKAROV (P.N.Lebedev Physical Institute)30/07/2015, 15:30107 cascades, created by secondary particles of astroparticle interaction at $10^{16}$ eV, were detected in the stratospheric emulsion chamber. Their azimuth distribution reveals a distinct anisotropy. Estimation of the elliptic flow coefficient v2 gives a value 0.35 $\pm$ 0.02. The distribution of cascade p(t) is also azimuth anisotropic and its maximal value coincides with...Go to contribution page
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Daisuke Ikeda (Institute for Cosmic Ray Research, University of Tokyo), Dr William Hanlon (University of Utah)30/07/2015, 15:30The energy spectrum and mass composition of Ultra-High Energy Cosmic Rays (UHECRs) measured using a hybrid analysis will be presented. TA consists of three FD stations and 507 SDs. A hybrid analysis reconstructs the position and direction of the air shower more accurately than the monocular FD analysis and measures the longitudinal development and calorimetric energy of the shower precisely....Go to contribution page
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Toshihiro FUJII (University of Chicago, University of Tokyo)30/07/2015, 15:30The Telescope Array (TA) experiment is the largest hybrid detector to observe ultra-high energy cosmic rays (UHECRs) in the northern hemisphere. We report on results of the energy spectrum of UHECRs covering a wide energy range, and the mass composition using the maximum shower depth, from analyzing data collected in monocular mode by the fluorescence detectors of TA during the first seven years.Go to contribution page
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Mr Luiz Augusto Stuani Pereira (Unicamp)30/07/2015, 15:30One of the first improvements of the Pierre Auger Observatory is the Auger Muons and Infill for the Ground Array (AMIGA) detector, in order to measure the cosmic ray spectrum and the chemical composition in the energy range from $10^{17}$eV. The muon detectors of the AMIGA *infill* count muons from extensive air showers observed by Auger Observatory, which are then reconstructed by the surface...Go to contribution page
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Sami Caroff (Centre National de la Recherche Scientifique (FR))30/07/2015, 15:30The Alpha Magnetic Spectrometer AMS-02 is a high energy particle physics detector, operational on the International Space Station since May 2011. The AMS-02 goal is the fundamental physics research in space with high energy cosmic rays, during its 20 year duration mission. The latest published results, with 30 months of data, show an excess of high energy positrons whose origin is still...Go to contribution page
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Raphaël Chalmé-Calvet (LPNHE)30/07/2015, 15:30In 2012, the High Energy Stereoscopic System (H.E.S.S.) was expanded by a fifth telescope (CT5). With an enormous effective mirror diameter of 28 m, CT5 is able to detect the Cherenkov light of very faint gamma-ray air showers, thereby significantly lowering the energy threshold of this telescope compared to the other four telescopes. Extracting as much information as possible from the...Go to contribution page
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Silvia Vernetto (Istituto Nazionale di Astrofisica)30/07/2015, 15:30The gamma ray sky at energies above a few tens of TeV is almost completely unexplored. Sources of photons above ~30 TeV must however exist because cosmic rays are accelerated in the Milky Way at least up to the knee energy. Photon emission in this energy range, with a high degree of confidence, has an hadronic origin and traces the proton and nuclei acceleration sites. Gamma ray astronomy...Go to contribution page
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Dr Dorothee Hildebrand (ETH Zurich)30/07/2015, 15:30FACT is the first Imaging Air Cherenkov Telescope to use solid-state photosensors (G-APD/SiPM) in order to measure the light flashes induced by air-showers. A vital part of the telescope system is the atmosphere. Typically, external devices such as LIDARs are used to quantify the quality of the atmospheric condition. Due to the exceptional stability of G-APD sensors, a different...Go to contribution page
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Dominik Neise (ETH Zurich)30/07/2015, 15:30The First G-APD Cherenkov Telescope (FACT) is the first operational test of the performance of silicon photomultipliers (SiPM) in Cherenkov Astronomy. These novel photon detectors promised to be an inexpensive and robust alternative for vacuum photomultiplier tubes, but had never been applied in an imaging airshower cherenkov telescope (IACT) up to now. For more than three years FACT has...Go to contribution page
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Mr Jens Buß (TU Dortmund)30/07/2015, 15:30The First G-APD Cherenkov telescope (FACT) is the first operational telescope of its kind with a camera equipped with silicon photon detectors (G-APD aka. SiPM). SiPMs have a high photon detection efficiency (PDE), while being more robust to bright light conditions than the commonly used photo-multiplier tubes. This technology has allowed us to increase the duty cycle beyond that of the...Go to contribution page
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523. FACT – Novel mirror alignment using Bokeh and enhancement of the VERITAS SCCAN alignment methodSebastian Mueller (ETH Zuerich)30/07/2015, 15:30Imaging Air Cherenkov Telescopes, including the First G-APD Cherenkov Telescope (FACT), use segmented reflectors. These offer large and fast apertures for little resources. However, one challenge of segmented reflectors is the alignment of the single mirrors to gain a sharp image. For Cherenkov telescopes, high spatial and temporal resolution is crucial to reconstruct air shower events...Go to contribution page
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Thomas Bretz (RWTH Aachen)30/07/2015, 15:30The FAMOUS telescope is a prove-of-concept study for the usage of silicon based photo sensors (SiPMs) in fluorescence telescopes. Such telescopes detect the fluorescence light emitted by ultra-high energy cosmic ray particles impinging on the Earth's atmosphere. Available instruments, like the fluorescence telescopes of the Pierre Auger Observatory in Argentina, are using photo multiplier...Go to contribution page
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Valerie Connaughton30/07/2015, 15:30Owing to its wide sky coverage and broad energy range, the Fermi Gamma-ray Burst Monitor (GBM) is an excellent observer of the transient hard X-ray sky. GBM detects about 240 triggered Gamma-Ray Bursts (GRBs) per year, including over 30 which also trigger the Swift Burst Alert Telescope (BAT). The number of GRBs seen in common with Swift is smaller than expected from the overlap in sky...Go to contribution page
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Francesco Loparco (Universita e INFN, Bari (IT))30/07/2015, 15:30We have measured the gamma-ray emission spectrum of the Moon using a the data collected by the Large Area Telescope onboard the Fermi satellite during its first 77 months of operation, in an energy range from 30 MeV up to a few GeV. We have developed a full Monte Carlo simulation describing the interactions of cosmic rays with the Moon surface and the subsequent production of gamma rays using...Go to contribution page
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Vincent Baas (TNO)30/07/2015, 15:30The detection of ultra-high energy neutrinos with energies above 10^18 eV requires a neutrino telescope that is at least an order of magnitude larger than what has been achieved today [1]. A potential technology for a large scale neutrino telescope, which is sensitive enough to detect the low thermo-acoustic signals induced by the cosmic rays in water, is offered by fiber optical hydrophones...Go to contribution page
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Nepomuk Otte (Georgia Institute of Technology)30/07/2015, 15:30Low-cost and low-power digitization systems become increasingly important in particle-physics and particle-astrophysics experiments as the number of channels is continuously rising. Specialized readout concepts have been developed in the past that aimed at lower costs and made detector systems with many ten thousand channels feasible. As the number of channels in experiments is still on the...Go to contribution page
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Prof. Huanyu Jia (Southwest Jiaotong University)30/07/2015, 15:30The shadow that the Sun casts on high energy cosmic rays is affected by the interplanetary and solar magnetic fields and has been shown to vary according to the solar rotation and activity cycle. Using the data of the ARGO-YBJ experiment, a large-area air shower detector located at high mountain altitude (4300 m a.s.l., in Tibet, China), the deficit of \sim 5 TeV cosmic rays due to the Sun...Go to contribution page
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Patrick Kühl (University of Kiel)30/07/2015, 15:30The solar modulation of galactic cosmic rays (GCR) can be studied in detail by long term variations of the GCR energy spectrum (e.g. on the scales of a solar cycle). With almost 20 years of data, the Electron Proton Helium INstrument (EPHIN) aboard SOHO is well suited for these kind of investigations. Although the design of the instrument is optimized to measure proton and helium isotope...Go to contribution page
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Dr Joachim Hahn (MPIK)30/07/2015, 15:30GAMERA is a new open-source C++ package which handles the spectral modelling of non-thermally emitting astrophysical sources in a simple and modular way. It allows the user to devise time-dependent models of leptonic and hadronic particle populations in a general astrophysical context (including SNRs, PWNs and AGNs) and to compute their subsequent photon emission. Moreover, this package also...Go to contribution page
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Tova Yoast-Hull (University of Wisconsin-Madison)30/07/2015, 15:30Regions of intense star-formation naturally generate high number densities of cosmic rays and as such, they are of particular interest as potential contributors to the extragalactic gamma-ray background (EGRB) and as potential sources of very high-energy cosmic rays (VHECRs). While models of the starburst contribution to the EGRB often assume cosmic rays are confined in starbursts, cosmic...Go to contribution page
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Mr Rafal Wojaczynski (Department of Astrophysics, University of Lodz)30/07/2015, 15:30We present results of the analysis of the Fermi-LAT data from low-luminosity Seyfert galaxies, whose X-ray spectra are consistent with predictions of the hot flow (ADAF) model. We use our precise hot flow model (fully GR and with a Monte Carlo computation of radiative processes) to fit the X-ray data and then we estimate the gamma-ray flux from hadronic processes in the two-temperature plasma...Go to contribution page
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Wlodek Bednarek (University of Lodz)30/07/2015, 15:30We consider a simple scenario for the accretion of matter onto rotating, magnetised neutron star in order to understand the processes in the inner pulsar magnetosphere during the transition stage between different accretion modes. We analyse a quasi-spherical accretion process onto rotating, magnetized compact object in order to search for radiative signatures which could accompany the...Go to contribution page
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Michael DuVernois (University of Wisconsin)30/07/2015, 15:30With recent exciting observations of astrophysical TeV- to PeV-energy neutrinos and new competitive measurements of GeV-energy atmospheric neutrino oscillations in the IceCube neutrino observatory at the South Pole, the design of a second generation Antarctic neutrino observatory, IceCube-Gen2, is underway. The design calls for two new instrumented volumes, one a denser in-fill array to extend...Go to contribution page
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Dr Pankaj Kumar Shrivastava (Govt.Model Science College,Rewa(M.P.))30/07/2015, 15:30The Coronal Mass Ejections generally occur in large numbers during the period of high solar activity carry large amount of 1025 J and 1013 kg of plasma into interplanetary medium]. The fast CMEs coming from the Sun into interplanetary space are the solar coronal features that contain high magnetic field having the capability to produce interplanetary disturbances. CMEs travelling at different...Go to contribution page
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Dr Satoru Takahashi (Kobe University)30/07/2015, 15:30The observation of high-energy cosmic gamma-rays provides us with direct information of high-energy phenomena in the universe. Currently, AGILE and Fermi-LAT are observing gamma-ray sky and many understandings are being brought to us. However, past and current observations have significant limitations. The improvement of angular resolution and polarization sensitivity is one of keys for a...Go to contribution page
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Mr Keita OZAKI (Kobe University)30/07/2015, 15:30GRAINE is a balloon-borne experiment to observe cosmic gamma-ray with precise angular resolution and polarization sensitivity. Main gamma-ray detector is nuclear emulsion which can record three dimensional charged particle track with sub-micron position accuracy. We use multi-stage shifter technique in order to give time information to penetrating tracks of nuclear emulsion. Arrival...Go to contribution page
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Dr Julie Saikia (Pub Kamrup College)30/07/2015, 15:30Thermodynamic study is the common approach to understand dark energy (DE) and dark matter (DM) riddle. The respective approach is still not comparatively matured in loop quantum cosmology (LQC). Our present work follows the study of the status of generalized second law (GSL) in unified DE-DM dominated LQC scenario.Go to contribution page
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Heike Prokoph (Linnaeus University)30/07/2015, 15:30Blazars are the most abundant class of known extragalactic very-high-energy (VHE, E>100 GeV) gamma-ray sources. However, one of the biggest difficulties in investigating their VHE emission resides in their limited number, since less then 60 of them are known by now. In this contribution we report on the H.E.S.S. observations of the BL Lac object PKS 1440-389. This source has been selected...Go to contribution page
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Andrew Smith (University of Maryland, College Park)30/07/2015, 15:30The High-Altitude Water Cherenkov (HAWC) Observatory was completed and began full operation in early 2015. The detector consists of an array of 300 water tanks, each containing ~200 tons of purified water and instrumented with 4 PMTs. Located at an elevation of 4100m a.s.l. near the Sierra Negra volcano in central Mexico, HAWC has a threshold for gamma-ray detection well below 1 TeV and a...Go to contribution page
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Tadahisa Tamura (Kanagawa University (JP))30/07/2015, 15:30We will report testing and calibration of the heavy-ion energy and charge resolution of the CALET cosmic-ray instrument that will fly on the International Space Station in 2015. The beam tests were carried out using a test instrument that is functionally equivalent to CALET. CALET will measure the energy spectra and arrival directions of cosmic-ray electrons to 20 TeV and hadrons to 1 PeV with...Go to contribution page
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Jean-Francois Glicenstein (CEA)30/07/2015, 15:30PKS 1830-211 is a lensed blazar located at z=2.5. The recent addition of a 28 m Cherenkov telescope (CT5) to the H.E.S.S. array extended the experiment's sensitivity towards low energies, providing access to gamma-ray energies down to 30 GeV. Data towards PKS1830-211 were taken with CT5 in August 2014, following a flare alert by the Fermi collaboration at the beginning of the month. The...Go to contribution page
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Mr Dennis Soldin (University of Wuppertal)30/07/2015, 15:30Cosmic ray air showers with primary energies above $\sim 1$ TeV can produce muons with high transverse momentum ($p_\mathrm{T} > 2$ GeV). These isolated muons can have large transverse separations from the shower core up to several hundred meters. Together with the muon bundle they form a double track signature in km$^3$-scale neutrino telescopes such as IceCube. These muons originate from the...Go to contribution page
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Piotr Banasiński (University of Lodz)30/07/2015, 15:30During the quiet $\gamma$-ray state of blazars the high energy emission is likely to be produced in the extended part of the inner jet in which the conditions can change significantly. Therefore, homogeneous SSC model is not expected to describe correctly the quiet state emission features. We consider inhomogeneous SSC model for the large part of the inner jet in which synchrotron and IC...Go to contribution page
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Masaki Mori (Ritsumeikan University)30/07/2015, 15:30The microquasar 1E 1740.7-2942, discovered by the Einstein satellite, is located near the Galactic Center at an angular distance of 50' from Sgr A*, and the brightest X-ray source above 20 keV in the Galactic Center region. It has extended radio lobes reaching distances of up to a few parsecs and its core radio emission is variable. In X-ray energies it shows the spectral and timing properties...Go to contribution page
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Dr Olga Malandraki (IAASARS, National Observatory of Athens, Athens, Greece)30/07/2015, 15:30Solar energetic particles are of prime astrophysical interest, but are also a space weather hazard motivating the development of predictive capabilities. The HORIZON 2020 project 'HESPERIA' will produce two novel Solar Energetic Particle (SEP) operational forecasting tools based upon proven concepts (UMASEP, REleASE). At the same time it will advance our understanding of the physical...Go to contribution page
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Patrick Kühl (University of Kiel)30/07/2015, 15:30In order to improve the separation of helium isotopes 3He and 4He measured by the Electron Proton Helium Instrument (EPHIN) aboard the Solar and Heliospheric Observatory (SOHO), we used Monte Carlo simulations to understand the instrument’s response to incoming particles. The identification of different isotopes is based on the dE/dx-E-method. For an ideal telescope with the energy loss ΔE...Go to contribution page
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Markus Roth (KIT)30/07/2015, 15:30Shower universality has demonstrated to be a sturdy tool to describe particle showers produced by primary cosmic rays. The secondary particles at the observation level can be described by a four component model: the well known electromagnetic and muonic components, the contribution due to the electromagnetic halo of the muons, and the electromagnetic particles originating from pion decays...Go to contribution page
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Xiaoting Qin (Universita e INFN, Perugia (IT))30/07/2015, 15:30The AMS-02 detector is a large acceptance magnetic spectrometer operating on the International Space Station since May 2011. More than 60 billion events have been collected by the instrument as of today. One of the key subdetectors of AMS-02 is the silicon microstrip Tracker, designed to precisely measure the trajectory and absolute charge of cosmic rays in the GeV-TeV energy range. In...Go to contribution page
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Colin Baus (KIT - Karlsruhe Institute of Technology (DE))30/07/2015, 15:30The inelastic cross section has been measured in proton-proton and proton-lead collisions at centre-of-mass energies per nucleon up to 8 TeV at the LHC. Nuclear scaling effects play an important role in the simulation of cosmic ray interactions and are studied in collisions with lead nuclei. Furthermore, the probability of diffractive interactions influences the efficiency of the energy...Go to contribution page
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Allan Labrador (California Institute of Technology)30/07/2015, 15:30Mean ionic charge states for SEP events can reflect source temperatures, stripping during acceleration and transport, and the composition of source material. Multi-spacecraft measurements of mean ionic charge states for single SEP events can also demonstrate longitudinal dependence. At previous conferences, we have reported estimates of inferred high-energy ionic charge states for SEP events....Go to contribution page
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Ryuji Takeishi (Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba, Japan)30/07/2015, 15:30The Pierre Auger Observatory (Auger) in Mendoza, Argentina and the Telescope Array (TA) in Utah, USA aim at unraveling the origin and nature of Ultra-High Energy Cosmic Rays (UHECR). At present, there appear to be subtle differences between Auger and TA results and interpretations. Joint working groups have been established and have already reported preliminary findings. From an experimental...Go to contribution page
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Yernar Tautayev (Institute of Physics and Technology, Almaty, Kazakhstan)30/07/2015, 15:30Cosmic ray measurements are carried out on at a detector station located in the Tian Shan mountains at an altitude of 3340 meters above sea level using the complex installations "Hadron-9" and "Hadron-44". The main objective of these studies is the interaction of cosmic rays with nuclei, in particular the study of anomalous events occurring in the cores of extensive air showers (EAS). Analysis...Go to contribution page
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Prof. Igor Yashin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))30/07/2015, 15:30An excess of multi-muon events in comparison with simulations performed in frame of widely used hadron interaction models was found in several cosmic ray experiments at very- and ultra-high energies of primary particles. In order to solve this so-called ‘muon puzzle’, investigations of the energy characteristics of EAS muon component are required. A possible approach to such investigations is...Go to contribution page
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Dr Semen Khokhlov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))30/07/2015, 15:30Results of investigation of the near-horizontal muons are presented in the range of zenith angles of 85 – 95 degrees. In this range, so-called ‘albedo’ muons (atmospheric muons scattered in the soil into the upper hemisphere) are detected. Measurements have been conducted with the NEVOD-DECOR experimental complex located on the campus of MEPhI. The basis of the complex is the Cherenkov water...Go to contribution page
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Eino Valtonen (University of Turku)30/07/2015, 15:30We have surveyed the SOHO/ERNE data from the beginning of the mission until the end of 2014 for solar particle events with enhancements in the Fe/C and Fe/O intensity ratio in energy ranges 5-15 MeV per nucleon and 50-150 MeV per nucleon. We have studied the relative abundances and spectral properties of heavy ions (C, N, O, Ne, Mg, Si, S, Ca, Fe) in these events. We have also studied the...Go to contribution page
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Victor Martin-Lozano (IFT-UAM/CSIC)30/07/2015, 15:30In this work we study the phenomenological aspects of Stückelberg portals where the mediator between the Standard Model and the dark matter (DM) is a massive Z' boson. Those scenarios are well motivated by certain string theory constructions and naturally lead to i sospin violating interactions of DM particles with nuclei. We show that within this construction the relations between the DM...Go to contribution page
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Karoly Kecskemety (Wigner Research Centre, Budapest, Hungary)30/07/2015, 15:30Simultaneously with 27-day variations of Jovian electrons of MeV energies, observed during the deep solar minimum in 2007-2008 in 14 consequent solar rotations, short duration (2-3 days) enhancements of the fluxes of 0.1-1 MeV electrons and protons were registered. These enhancements took place at each solar rotation simultaneously at SOHO (EPHIN and LION) and ACE (EPAM) and appeared earlier...Go to contribution page
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Stephany Vargas (Escuela Politécnica Nacional)30/07/2015, 15:30The Latin American Giant Observatory (LAGO) is an astroparticle network focused in the study of the phenomenology of Cosmics Rays (CR) in different energy ranges, using water Cherenkov Detectors(WCD). Ecuador has been working in the LAGO project for almost 3 years in which three detectors had been placed in different universities of the country (one in the city of Riobamba and two in the city...Go to contribution page
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Rahul Kumar (Ben Gurion University)30/07/2015, 15:30The expected anisotropy in the 1 to 104 TeV energy range is calculated for Galactic cosmic rays with both anisotropy in the diffusion tensor and source discreteness taken into account.We find that if the sources are distributed radially (but with azimuthal symmetry) in proportion to Galactic pulsars, the expected anisotropy almost always exceeds the observational limits by one order of...Go to contribution page
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Sun Zhandong (Southwest Jiaotong University)30/07/2015, 15:30To fulfill the requirements of testing the photomultiplier tubes (PMTs) of the electromagnetic detector at the Large High Altitude Air Shower Observatory, a multifunctional PMT test bench with a two-dimensional (2D) scanning system is developed. With this 2D scanning system, 16 PMTs are scanned simultaneously to test their uniformity and cathode transit time difference. The di-distance...Go to contribution page
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Dr Chong Wang (Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences)30/07/2015, 15:30Wide Field-of-view air Cherenkov Telescope Array (WFCTA) is an essential component of the Large High Altitude Air Shower Observatory (LHAASO). WFCTA comprises 24 movable identical telescopes specialized for measuring the energy spectrums of the cosmic ray ingredients. In this paper, we describe the synthesis optimization design of the optical system, including the mirror segments, the camera...Go to contribution page
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Karl-Heinz Kampert (Universität Wuppertal)30/07/2015, 15:30As part of the Auger Engineering Radio Array, an extension of the Pierre Auger Observatory with antennas in the MHz range, it is necessary to monitor the local atmospheric conditions. These have a large influence on the radio emission induced by air showers. In particular, amplified signals up to an order of magnitude have been detected as an effect of thunderstorms. For a more detailed...Go to contribution page
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Mr Mikhail Amelchakov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))30/07/2015, 15:30The system of calibration telescopes (SCT) of the Cherenkov water detector (CWD) NEVOD is used as a shower array. SCT consists of two planes (80 m^2) with 40 scintillation counters (40×20×2 cm^3) in each. One plane is located on the roof of the CWD, and another one on its bottom. The distance between two planes is 9.45 m. Each registration channel of SCT is able to evaluate the counter...Go to contribution page
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Mr LIU Cheng (IHEP, CAS), Mr QIAN Xiangli (IHEP, CAS)30/07/2015, 15:30The underground muon detector with water Cherenkov technique is constructed as the upgrad of the Tibet air shower array, aiming at a higher sensitivity for gamma-ray observation. In one of the modules (MD-A), the full-sealing large Tyvek bag is used as a closed? container. As the MD-A has been operated for more than one year, the long term stability of the performance of such detector is reported.Go to contribution page
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Ms Priyadarshini Bangale (MPI for Physics, Munich)30/07/2015, 15:30M 87 is the closest extragalactic VHE object located in the Virgo cluster of galaxies at a distance of ~16 Mpc (redshift z=0.00436). It is the first and brightest radio galaxy detected in the TeV regime, well studied from radio to X-ray energies. The structure of its relativistic plasma jet, which is misaligned with respect to our line of sight, is spatially resolved in X-ray (Chandra),...Go to contribution page
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Prof. Hanrong Wu (Institute of High Energy Physics, CAS), Prof. Huihai He (Institute of High Energy Physics, CAS)30/07/2015, 15:30Detection of GeV photons from GRBs is crucial in understanding the most violent phenomenon in our universe. Due to the limited effective area of space-born experiment, very few GRBs are detected with GeV photons. Large area EAS experiments at high altitude can reach a much larger effective area around 10 GeV, for which single particle technique is usually used to lower the threshold energy but...Go to contribution page
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Francisco Diogo (LIP (Lisboa))30/07/2015, 15:30In addition to the standard $X_\mathrm{max}$ and energy, the longitudinal profiles of extensive air showers contain some more interesting information. For energies above $10^{17.8}$ eV, we present the average profiles as a function of depth measured for the first time at the Pierre Auger Observatory. The profile shapes for different energy ranges are all well reproduced by a Gaisser-Hillas...Go to contribution page
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Wolfgang Menn (University of Siegen)30/07/2015, 15:30The cosmic-ray hydrogen and helium (1H,2H,3He,4He) isotopic composition between 100 MeV/n and 1.4 GeV/n has been measured with the satellite-borne experiment PAMELA. The rare isotopes 2H and 3He in cosmic rays are believed to originate mainly from the interaction of high energy protons and helium with the galactic interstellar medium. The energy spectrum of these components carries...Go to contribution page
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Mr Pedro Assis (LIP)30/07/2015, 15:30The Pierre Auger Observatory operates a hybrid detector composed of a Fluorescence Detector and a Surface Detector array. Water-Cherenkov detectors are the building blocks of the array and as such play a key role in the detection of secondary particles at the ground. A good knowledge of the detector response is paramount to lower systematic uncertainties and thus to increase the capability of...Go to contribution page
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Dr Tescaro Diego (Instituto de Astrofísica de Canarias, Tenerife, Spain)30/07/2015, 15:30One of the key characteristic of Alpha Magnetic Spectrometer (AMS-02) is its capability to measure the relative abundances and absolute fluxes of the nuclear components of the galactic cosmic rays (CRs), from hydrogen up to iron (Z=26), in a kinetic energy range from GeV/n to TeV/n. In this contribution we discuss the methodology for the precise identification ions with AMS-02, which is...Go to contribution page
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Andreas Obermeier (Rheinisch-Westfaelische Tech. Hoch. (DE))30/07/2015, 15:30Since May 2011 the AMS-02 experiment is installed on the ISS and is observing cosmic radiation. It consists of several state-of-the-art sub-detectors, which redundantly measure charge and energy of traversing particles. Due to the long exposure time of AMS-02 of many years the measurement of cosmic-ray energy spectra is mainly limited not by statistics, but by detector response. The...Go to contribution page
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Hershal Pandya (University of Delaware)30/07/2015, 15:30IceTop, the surface component of the IceCube Neutrino Observatory, detects air showers initiated by cosmic ray nuclei and gamma rays. The ground level muons are correlated with the energy and mass of the primary particle. This correlation is enhanced by resolving those muons which are produced early in the shower. The muon production depth (MPD) is reconstructed as a function of muon arrival...Go to contribution page
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Lev Pustilnik (Israel Cosmic Ray Center, and Tel Aviv University)30/07/2015, 15:30Temperature effect of mountain muon detectors which exceeds a little that expected theoretically, was studied in this work. Meteorological effects of such detectors have their own peculiarities and practically were not investigated before. Data from multidirectional detectors YangBaJing, Moussala, Bure, Mt. Hermon, Yerevan (2000 м) were used for calculations from the created in IZMIRAN...Go to contribution page
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Blahoslav Pastirčák (Institute of Experimental Physics SAS, Košice, Slovakia)30/07/2015, 15:30The SecondaryCR model evaluates particle fluxes and spectra of secondary e-, e+, mu+, mu-, gammas, protons, neutrons, Cherenkov light etc. at different positions, altitudes and times in the Earth atmosphere. We developed this model of secondary cosmic rays production in the Earth's atmosphere in the previous studies. It is based on existing models evaluating particles transport in...Go to contribution page
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Konstantin Herbst (Christian-Albrechts-Universität zu Kiel)30/07/2015, 15:30Cosmogenic radionuclides such as 10Be, 14C and 36Cl are a product of the interaction of high energetic primary cosmic ray particles, in particular galactic cosmic rays (GCR), with the Earth’s atmosphere. Because GCRs are modulated on their way through the interplanetary medium the GCR-induced production of these radionuclides is anti-correlated to the solar cycle. In addition, during phases of...Go to contribution page
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Matteo Sanguineti (INFN Genova - Università di Genova)30/07/2015, 15:30The ANTARES detector is the largest neutrino telescope currently in operation in the North Hemisphere. One of the main goals of the ANTARES telescope is the search for point-like neutrino sources. For this reason both the pointing accuracy and the angular resolution of the detector are important and a reliable way to evaluate these performances is needed. One possibility to measure the...Go to contribution page
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Lew Classen (University Erlangen-Nuremberg)30/07/2015, 15:30Following the first observation of astrophysical high-energy neutrinos by IceCube, planning for a next-generation neutrino detector at the South Pole is under way, which will expand IceCube's sensitivity both towards high and low neutrino energies. In parallel to upgrading the proven IceCube design, new optical sensor concepts are explored which have the potential to further significantly...Go to contribution page
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Peter Zelina (University of Central Lancashire)30/07/2015, 15:30Solar Energetic Particles (SEPs) released during flares and coronal mass ejections can be detected by spacecraft widely separated in longitude. The mechanism by which this transport across the magnetic field takes place remains unclear. Studies of SEP events simultaneously detected by multiple spacecraft have mostly focussed on electron and proton data. Here we consider multi-spacecraft...Go to contribution page
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Dr Lucy Fortson (University of Minnesota)30/07/2015, 15:30Intermediate-frequency-peaked BL Lacertae objects (IBLs) are a class of blazars characterized by a spectral energy distribution (SED) with a lower-energy synchrotron peak than a majority of extragalactic sources detected by ground-based imaging atmospheric Cherenkov telescopes (IACTs). Because of this shift in the SED, the peak gamma-ray flux falls outside the very-high-energy regime (VHE,...Go to contribution page
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Raul Sarmento (LIP)30/07/2015, 15:30We discuss the concept of an array with Resistive Plate Chambers (RPC) for muon detection in ultra-high energy cosmic ray (UHECR) experiments. RPC have been used in particle physics experiments due to their fast timing properties and spatial resolution. The operation of a ground array detector poses challenging demands, as the RPC must operate remotely under extreme environment, with limited...Go to contribution page
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Victor Zabalza (University of Leicester)30/07/2015, 15:30The ultimate goal of the observation of nonthermal emission from astrophysical sources is to understand the underlying particle acceleration and evolution processes, and few tools are publicly available to infer the particle distribution properties from the observed photon spectra from X-ray to VHE gamma rays. Naima is an open source Python package that provides models for non-thermal...Go to contribution page
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Simon Thomas (University College London)30/07/2015, 15:30Galactic cosmic ray (GCR) flux is modulated by both particle drift patterns and solar wind structures on a range of time scales. Over solar cycles, GCR flux varies as a function of the total open solar magnetic flux and the latitudinal extent of the heliospheric current sheet. Over time-scales of hours, drops of a few percent in near-Earth GCR flux (Forbush decreases, FDs) are well known to be...Go to contribution page
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Jean-Francois Glicenstein (CEA)30/07/2015, 15:30NectarCAM is a camera proposed for the medium-sized telescopes of the Cherenkov Telescope Array (CTA) covering the central energy range of ~100 GeV to ~30 TeV. It has a modular design and is based on the NECTAr chip, at the heart of which is a GHz sampling Switched Capacitor Array and 12-bit Analog to Digital converter. The camera will be equipped with 265 7-photomultiplier modules, covering...Go to contribution page
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Dr Nikolay Volodichev (D.V.Skobeltsyn Institute of Nuclear Physics, M.V.Lomonosov Moscow State University)30/07/2015, 15:30The results presented in the report are based on the measurements of thermal neutrons flux produced by the Earth’s surface during the experiment carried out in Pamir region at the altitude of 4200 m above sea level for the period from August 1 till August 14, 1994. The neutrons in the Earth’s atmosphere are produced mainly during the interactions between the primary cosmic rays nucleons and...Go to contribution page
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Bayarto Lubsandorzhiev (Institute for Nuclear Research of RAS)30/07/2015, 15:30We present new concepts of timing calibration systems for large-scale Cherenkov arrays in astroparticle physics experiments like Cherenkov arrays detecting extensive air showers (EAS) and water Cherenkov neutrino arrays. The concepts are based on a fast powerful LED light source on board of a pilotless remotely controlled helicopter in case of EAS Cherenkov arrays and on multiple LED sources...Go to contribution page
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James Beatty (Ohio State University)30/07/2015, 15:30The surface detector array of the Pierre Auger Observatory consists of 1660 water Cherenkov detectors that sample the charged particles and photons of air showers initiated by energetic cosmic rays at the ground. Each detector records data locally with timing obtained from GPS units and power from solar panels and batteries. In the framework of the planned upgrade of the Auger Observatory,...Go to contribution page
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yury Balabin (PGI)30/07/2015, 15:30In this paper the RUSCOSMICS software package based on the GEANT4 toolkit and its possibilities in the cosmic rays are considered. Energy spectra of secondary cosmic rays particles resulting from the proton transport modeling trough the Earth atmosphere are presented. A calculations error is estimated and a comparison with experimental data is carried out. Also on the basis of the secondary...Go to contribution page
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Marco Ricci (Istituto Nazionale Fisica Nucleare Frascati (IT))30/07/2015, 15:30
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Donald Ngobeni (Vaal University of Technology)30/07/2015, 15:30Low-energy galactic electrons (1-200 MeV) are significantly modulated, almost extraordinary, in the heliosheath in contrast to the rest of the heliosphere, indicating that modulation conditions in the heliosheath are quite different for these particles. In addition, Jovian electrons completely dominate galactic electrons at Earth below about 30 MeV. Low-energy protons and helium (1-100...Go to contribution page
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Mrs Stefania Vitillo (Universite de Genève)30/07/2015, 15:30The Alpha Magnetic Spectrometer (AMS-02) is an astroparticle physics detector installed on the International Space Station (ISS) on May 16th 2011 during the STS-134 NASA Endeavour Shuttle mission. The purpose of the experiment is to study with unprecedented precision and statistics charged particles and nuclei in an energy range from 0.5 GeV to few TeV. The AMS-02 Tracker System accurately...Go to contribution page
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Sander ter Veen (ASTRON)30/07/2015, 15:30The lunar askaryan technique is one of the few ways to obtain a large enough collecting area to detect ultra high energy cosmic rays and neutrinos at the highest end of the spectrum, above 10$^{21}$ eV. The flux of these particles is unknown, but if they are found they either point back to the best cosmic accelerators or may be the products of the decay of exotic particles and a step towards...Go to contribution page
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Dr Laurent Bouchet (IRAP)30/07/2015, 15:30We present $^{26}Al$ map distribution throughout the Galaxy measured by the SPI spectrometer aboard the INTEGRAL observatory. This emission at 1.809 MeV is associated with the $^{26}Al$ decay and to the production of heavy elements in the Galaxy. The only available $^{26}Al$ map to date has been released, more than fifteen years ago, thanks to the COMPTEL instrument. However, at the...Go to contribution page
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Eino Valtonen (University of Turku)30/07/2015, 15:30We investigate associations of solar energetic particle events with multiple solar eruptions incorporating both coronal mass ejections (CMEs) and intense flares. Searching through the time period from 1996 to the end of 2013 we found three series of eruptions with start times occurring in a time window of less than two days and consisting of at least three fast and wide CMEs from the same...Go to contribution page
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Lev Pustilnik (Israel Cosmic Ray Center, and Tel Aviv University)30/07/2015, 15:30The discussion on the principal possibility of a causal chain from solar activity – Space Weather to the earth climate and up to agriculture response continues over 200 years (Herschel,1801). We show that the root of the critics of this possibility lies in the conception (accepted default) of the universality of the solar-terrestrial connection (STC). This default paradigm of universality of...Go to contribution page
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Prof. Maria Giller (University of Lodz)30/07/2015, 15:30We calculate analytically the correlation coefficient of the scattering angle and the lateral deflection for electrons being multiply scattered by small angles while losing energy. We show that when average losses are assumed for the bremsstrahlung process the behaviour of the correlation coefficient with electron energy is completely different from that when only the...Go to contribution page
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Dr Olga Kryakunova (Instutute of Ionosphere, Almaty, Kazakhstan)30/07/2015, 15:30Changes of indices of geomagnetic activity, and also cosmic ray density and anisotropy in high-speed streams of a solar wind from various solar coronal holes are studied. About 350 coronal holes observed in 1996-2013 were divided into groups taking into account their polarity and heliolatitude. It is shown that northern holes with negative polarity and the southern holes with positive polarity...Go to contribution page
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Max Ludwig Ahnen (ETH Zurich)30/07/2015, 15:30The On-Off problem, aka. Li-Ma problem, is a statistical problem where a measured rate is the sum of two parts. The first is due to a signal and the second due to a background, both of which are unknown. Mostly frequentist solutions are being used, but they are only adequate for high count numbers. When the events are rare such an approximation is not good enough. Indeed, in high-energy...Go to contribution page
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Du Toit Strauss (North-West University, South Africa)30/07/2015, 15:30Observations show that solar energetic particles, even those accelerated during smaller impulsive events, are transported very effectively across the background magnetic field; at 1 AU, particle intensities may extend up to 360 degrees in longitude in extreme cases. We present modeling results of such events, examining the effectiveness of mainly perpendicular diffusion. In our model, we...Go to contribution page
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Ulisses Barres (Centro Brasileiro de Pesquisas Físicas)30/07/2015, 15:30n 2012, Fermi/LAT gamma-ray and radio observations have registered the largest ever recorded flaring episodes from the blazar Markarian 421. The unprecedented activity state of the source has remained high, and much above the normal behaviour seem from the source also for the year 2013, characterising a dramatic and long-lasting change of behaviour in the emission of the object. This unique...Go to contribution page
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Dr Alessandro Bruno (Department of Physics, University of Bari, I-70126 Bari, Italy)30/07/2015, 15:30Data from the PAMELA satellite experiment were used to measure the geomagnetic cutoff for high-energy (above 80 MeV) protons during the solar particle events on 2006 December 13 and 14. The variations of the cutoff latitude as a function of rigidity were studied on relatively short timescales, corresponding to single spacecraft orbits (about 94 minutes). Estimated cutoff values were...Go to contribution page
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Dr Alessandro Bruno (Department of Physics, University of Bari, I-70126 Bari, Italy)30/07/2015, 15:30Data from the PAMELA satellite experiment were used to perform a detailed measurement of under-cutoff protons at low Earth orbit. On the basis of a trajectory tracing approach using a realistic description of the magnetosphere, protons were classified into geomagnetically trapped and albedo. The former includes stably-trapped protons in the South Atlantic Anomaly, which were analyzed in the...Go to contribution page
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Leonardo Dominguez (Departamento de Computación de Alta Prestación - Comisión Nacional de Energía Atómica)30/07/2015, 15:30In this work we introduce different parallelization schemes implemented in the AIRES (AIR-shower Extended Simulations) software, in order to perform simulations, without thinning algorithm, in HPC clusters. The AIRES's particle stack was modified to define a new structure allowing its parallelization using MPI library. Adopting this new structure, three different parallelization tactics were...Go to contribution page
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Toshiyuki Nonaka (Institute for Cosmic Ray Research, University of Tokyo)30/07/2015, 15:30Measurement of shower particles using scintillators at ground level, with different absorber thicknesses, enables detailed studies of the Telescope Array experiment’s energy scale and of hadronic interaction models. We designed and constructed two types of such detectors. In this report, we present their performance and operational status.Go to contribution page
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Dr Jean-Laurent Dournaux (GEPI. CNRS, Observatoire de Paris)30/07/2015, 15:30The Cherenkov Telescope Array (CTA) project aims to create the next generation Very High Energy gamma-ray telescope array. It will be devoted to the observation of gamma rays over a wide band of energy, from 20 GeV to 300 TeV. Two sites are foreseen, one in the northern and the other in the southern hemisphere, allowing the viewing of the whole sky. The southern site will be equipped with...Go to contribution page
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Dr Deliang Zhang (University of Science and Technology of China)30/07/2015, 15:30The DAMPE (DArk Matter Particle Explorer) is a scientific satellite mainly aimed at indirectly searching for dark matter in space. One critical sub-detector of the DAMPE payload is an electromagnetic calorimeter, which consists of 308 BGO (Bismuth Germanate Oxid) crystal bars and 616 PMTs (photomultiplier tubes), for precisely measuring the energy of cosmic rays from 5 GeV to 10 TeV. The...Go to contribution page
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608. Performance studies of the new stereoscopic Sum-Trigger-II of MAGIC after one year of operationDr Francesco Dazzi (Max-Planck-Institute for Physics Munich)30/07/2015, 15:30MAGIC is a stereoscopic system of two Imaging Air Cherenkov Telescopes (IACTs) located at La Palma (Canary Islands, Spain) and working in the field of very high energy gamma-ray astronomy. It makes use of a traditional digital trigger with an energy threshold of around 55 GeV. A novel trigger strategy, based on the analogue sum of signals from partially overlapped patches of pixels, leads to a...Go to contribution page
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Alexandre Creusot (Universite de Paris VII (FR))30/07/2015, 15:30The KM3NeT collaboration aims to build a km3-scale neutrino telescope in the Mediterranean Sea. The first phase of construction comprises the deep-sea and onshore infrastructures at the KM3NeT-It (100 km offshore Capo Passero, Italy) and KM3NeT-Fr (40 km offshore Toulon, France) sites and the installation of 31+7 detection units. For the next step (KM3NeT 2.0) completion of two detectors are...Go to contribution page
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Markus Holler (LLR - Ecole Polytechnique)30/07/2015, 15:30The High Energy Stereoscopic System (H.E.S.S.) is an array of five Imaging Atmospheric Cherenkov Telescopes (IACTs) designed to detect and image cosmogenic gamma-rays with very high energies. Originally consisting of just four identical IACTs (CT1-4) with an effective mirror diameter of 12$\,$m each, it was expanded with a fifth IACT (CT5) with a mirror diameter of 28$\,$m in 2012. Being the...Go to contribution page
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Carsten Rott (Sungkyunkwan University), Debanjan Bose (Sungkyunkwan University)30/07/2015, 15:30IceCube is the world’s largest neutrino telescope located at the geographic South Pole, that utilizes more than 5000 optical sensors to observe Cherenkov light from neutrino interactions. A hot water drill was used to melt holes in the ultra-pure Antarctic ice, in which strings of optical sensors were deployed at a depth of 1500m to 2500m. The recent observation of high energy neutrinos...Go to contribution page
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Karel Kudela (IEP SAS Kosice, Slovakia)30/07/2015, 15:30The main scientific task of JEM-EUSO is to observe the ultra high energy cosmic rays by looking the atmosphere from space. On one hand the detailed description and study of various sources of the background is important (e.g. Bertaina et al., 2014). On the other hand, the study of selected magnetospheric and ionospheric processes leading to temporal and spatial variability of UV on the orbit...Go to contribution page
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Dr Brian Flint Rauch (NASA-Natl. Aeronaut. & Space Admin. (US))30/07/2015, 15:30The CALorimetric Electron Telescope (CALET) is a Japanese-Italian-US astroparticle observatory expected to be installed on the ISS in 2015. The main calorimeter (CAL) on CALET is comprised from top to bottom of a charge detector (CHD) with two crossed layers of scintillator paddles, an imaging calorimeter (IMC) with planes of scintillating fibers interleaved with tungsten sheets, and a total...Go to contribution page
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Dustin Hebecker (Humboldt Universität zu Berlin / DESY)30/07/2015, 15:30We report on the development of a photon sensor sensitive to single photons that employs wavelength-shifting and light-guiding techniques to maximize the collection area and to minimize the dark noise rate. The sensor is tailored towards applications in ice-Cherenkov neutrino detectors using inert and cold, low-radioactivity and UV transparent ice as a detection medium, such as IceCube-Gen2 or...Go to contribution page
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Sun Zhandong (Southwest Jiaotong University)30/07/2015, 15:30A prototype array for the LHAASO-KM2A, which consists of 39 detector units, was set up at the Yangbajing cosmic ray observatory(4300m a.s.l., Tibet, P.R. China) and has been in stable operation since Octoter 2014. In this paper, we present the performances of the prototype electromagnetic particle detector and the prototype array.Go to contribution page
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Yernar Tautayev (Institute of Physics and Technology, Almaty, Kazakhstan)30/07/2015, 15:30Estimation of physical properties of exited fireball from complex final pattern of produced particles is key challenge in nucleus-nucleus collisions at high energies. Effective way to better understanding and interpretation of results consists in analyses of interaction of smaller systems, created in proton-proton or in proton-nucleus collisions.On the basis of such approach interactions of...Go to contribution page
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Prof. Bernd Heber (University of Kiel), Patrick Kühl (University of Kiel)30/07/2015, 15:30Ground Level Enhancements (GLEs) are solar energetic particle (SEP) events that are recorded by ground-based instrumentation. The energy of the particles is so high that they produce secondary particles, i.e. protons and neutrons, which are detected as sudden increases in cosmic ray intensities measured by e.g. neutron monitors. Since the launch of SOHO in December 1995 the neutron monitor...Go to contribution page
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Dr Zhaoyang Feng (IHEP,CAS)30/07/2015, 15:30In order to study ultra-high-energy cosmic-ray (UHECR) sources, we need not only to know their direction, energy and chemical composition, but also large statistics of experimental data, which requires that the detector should have a large effective area and a high duty cycle. Radio antennas present some attractive aspects in this perspective, with very low unit costs, easiness of deployment...Go to contribution page
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Dr Rolf Bütikofer (Physikalisches Institut, University of Bern / HFSJG, Bern, Switzerland)30/07/2015, 15:30The investigation of solar cosmic ray events based on neutron monitor measurements requires detailed knowledge about the trajectories of charged particles in the Earth's magnetic field. This information is needed with a high time resolution and for the current level of disturbance of the geomagnetic field. The determination of cutoff rigidities and asymptotic directions by the standard...Go to contribution page
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Dr Nachiketa Chakraborty (Max-Planck-Institut fuer Kernphysik)30/07/2015, 15:30Flaring states of the BL Lac object, Mrk 501 were observed by the High Energy Stereoscopic System (H.E.S.S.) during 2012 and 2014. Observations in 2014 recorded flux levels higher than one Crab unit and revealed rapid variability at very high energies ($\sim$ 2-20 TeV). The high statistics afforded by the flares allowed us to probe the presence of minutes timescale variability and study its...Go to contribution page
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Gregory Richards (Georgia Institute of Technology)30/07/2015, 15:30In recent years, the Fermi-LAT gamma-ray telescope has detected a population of over 160 gamma-ray pulsars, which has enabled the detailed study of gamma-ray emission from pulsars at energies above 100 MeV. Further, since the surprising detection of the Crab pulsar in very high-energy (VHE; E > 100 GeV) gamma rays by the MAGIC and VERITAS collaborations, there has been an ongoing effort in the...Go to contribution page
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Dr Paolo Goldoni (APC/CEA-Irfu)30/07/2015, 15:30Blazars are active galactic nuclei, and the most numerous High Energy (HE) and Very High Energy (VHE)gamma-ray emitters. Their optical emission is often dominated by non-thermal, and, in the case of BL Lacs, featureless continuum radiation. This renders the determination of their redshift extremely difficult. Indeed as of today only about 50% of gamma-ray blazars have a measured spectroscopic...Go to contribution page
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Hisao Tokuno (UTokyo)30/07/2015, 15:30The Telescope Array is a hybrid detector which consists of a surface detector (SD) and three air fluorescence detector sites surrounding the SD array. Hybrid data collection began in May 2008, with independent triggering of the two detector systems. Since October 2010, the SD array has been triggered with an external trigger from the fluorescence detectors (called a "hybrid-trigger") designed...Go to contribution page
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Temir Zharaspayev (National Research Nuclear University MEPhI)30/07/2015, 15:30Various local geophysical phenomena, like thunderstorms and earthquakes can be the cause for particle precipitation from Earth radiation belt. Longitudinal particle drift period is known to be dependent from its energy, due to this fact: using particles energy spectrum data change in time, it is possible to determine distances between locations of precipitation and registration on board of...Go to contribution page
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Mr Ramin Marx (MPIK Heidelberg)30/07/2015, 15:30The Cherenkov Telescope Array (CTA) will be a ground-based gamma-ray observatory with full-sky coverage in the very-high energy (VHE) regime. It is proposed to consist of more than 100 telescopes and should produce large amounts of data, possibly exceeding the volume of current VHE Imaging Atmospheric Cherenkov Telescopes by ~two orders of magnitude. This volume of data represents a new...Go to contribution page
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tokonatsu yamamoto (Konan University)30/07/2015, 15:30Hard X-ray bremsstrahlung, gamma-ray lines, and >100 MeV gamma-ray emission were observed by Fermi during a 50 s burst from the M2-class X-ray flare (Ackermann et. 2012). The neutron-capture line was also observed (25 gamma/cm2 indicating that tens of MeV neutrons were produced at the Sun. From this measurement we estimate that the neutron fluence at Earth would have been about 5 neutrons/cm2...Go to contribution page
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Dr Tobias Winchen (Bergische Universität Wuppertal)30/07/2015, 15:30Energy-dependent patterns in the arrival directions of cosmic rays could arise from deflections in galactic and extragalactic magnetic fields. We report on searches for such patterns in the data of the surface detector of the Pierre Auger Observatory at energies above E = 5 EeV in regions within approximately 15° of the arrival directions of events with energy E > 60 EeV. No significant...Go to contribution page
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Anna Franckowiak (SLAC)30/07/2015, 15:30Supernovae (SNe) exploding in a dense circumstellar medium (CSM) are hypothesized to accelerate cosmic rays in collisionless shocks and emit GeV gamma rays and TeV neutrinos on a time scale of several months. We perform the first systematic search for gamma-ray emission in Fermi LAT data in the energy range from 100 MeV to 300 GeV from the ensemble of SNe exploding in dense CSM. We study a...Go to contribution page
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Prof. Tokonatsu Yamamoto (Konan Univeristy)30/07/2015, 15:30We report a search for 12.5 GHz microwave radiation from electron beams in the atmosphere. Ultrahigh-energy cosmic rays (UHECRs) are observed indirectly through extensive air showers (EASs) by particle detectors on the ground or fluorescence detectors using a remote sensing method. If isotropic radiation of microwave from EAS is detected, it can be used for future observation of the UHECR...Go to contribution page
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Katsuya Yamazaki (University of Tokyo)30/07/2015, 15:30In order to understand sources of ultra high energy cosmic rays, we search for ultra high energy photons with the Telescope Array experiment. The Telescope Array is a hybrid detector consisting of an array of scintillation detectors, which measure the lateral profile of air showers, and fluorescence detectors, which measure the longitudinal profile of air showers. This information is used to...Go to contribution page
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TOSHIHIRO FUJII (University of Chicago, University of Tokyo)30/07/2015, 15:30Ultra-relativistic magnetic monopoles, possibly a relic of phase transitions in the early universe, would deposit an amount of energy comparable to UHECRs in their passage through the atmosphere, producing highly distinctive air shower profiles. We have performed a search for ultra-relativistic magnetic monopoles in the sample of air showers with profiles measured by the Fluorescence Detector...Go to contribution page
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marcos lopez (University Complutense of Madrid)30/07/2015, 15:30Geminga pulsar appears to be one of the most promising candidates to emit VHE gamma-ray pulsed emission. In order to detect the third pulsar with power-law spectral component above of the measured cutoff, after Crab and Vela, we analyzed 63 hours of data taken with MAGIC. To discuss the connection with HE gamma rays, 6 years of Fermi-LAT data were also analyzed. No significant pulsation was...Go to contribution page
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Prof. Rostislav Kokoulin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))30/07/2015, 15:30Experimental data accumulated in a 3-year long series of measurements (from May 2012 to April 2015) of cosmic ray muon bundles with the coordinate-tracking detector DECOR are analyzed. It has been found that the measured rate of the events exhibits clear seasonal variations, repeated every year of observations. The amplitude of the first annual harmonic of the event rate has been estimated as...Go to contribution page
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Mrs Sara Coutiño (INAOE)30/07/2015, 15:30The extragalactic background light (EBL) is all the electromagnetic energy released by resolved and unresolved extragalactic sources since the recombination era. Its intensity and spectral shape provide information about the evolution of galaxies throughout cosmic history. Since direct observations of the EBL are very difficult to perform, the study of the interaction between the low energy...Go to contribution page
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Saptashwa Bhattacharyya (Waseda University)30/07/2015, 15:30Future space based experiments such as CALET and DAMPE will measure the electron and positron cosmic-ray spectrum with better energy resolution and up to higher energy, making detection of small features in the spectrum, which might originate from Dark Matter annihilation or decay in the galactic halo, possible. For precise prediction of these features, the numerical cosmic ray propagation...Go to contribution page
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Dr Bo Gao (Institute of High Energy Physics,CAS), Dr Hanrong Wu (Institute of High Energy Physics,CAS), Mr Huicai Li (Naikai University), Dr Mingjun Chen (Institute of High Energy Physics,CAS), Prof. Zhiguo Yao (Institute of High Energy Physics,CAS)30/07/2015, 15:30The Large High Altitude Air Shower Observatory (LHAASO) will be constructed at Mt. Haizi in Sichuan Provice, China. As a major component of the LHAASO project, the Water Cherenkov Detector Array (WCDA) is designed to record air showers produced by cosmic rays and gamma rays in the energy range from 100 GeV to 100 TeV. Complementing the Imaging Atmospheric Cherenkov Telescopes with large...Go to contribution page
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Anita Reimer (University of Innsbruck)30/07/2015, 15:30The non-thermal spectra of jetted Active Galactic Nuclei (AGN) show a variety of shapes and degrees of curvature in their low and high energy components. From some of the brightest Fermi-LAT blazars prominent spectral breaks at a few GeV have been regularly detected which is inconsistent with conventional cooling effects. We propose that the broad variety of spectral shapes including...Go to contribution page
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Prof. Kazuoki Munakata (Shinshu University, Nagano, Japan)30/07/2015, 15:30The IceCube experiment presented in 2012 the declination dependence of the first and second harmonic coefficients of the sidereal cosmic-ray anisotropy at 20 TeV and 400 TeV. In this presentation, we calculate the coefficients for the comic ray data observed by the Tibet ASgamma experiment at median energies of 12 TeV and 300 TeV during a period between November 1999 and May 2010. By using...Go to contribution page
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Alexander Ziegler (ECAP, University of Erlangen-Nuremberg, Germany)30/07/2015, 15:30Observations of the Galactic Center with the H.E.S.S. instrument have led to the detection of an extended region of diffuse TeV $\gamma$-ray emission. The origin of this emission is not yet fully understood, although the spatial correlation between the density distribution of giant molecular clouds located at the center of our Galaxy and the intensity of the observed $\gamma$-ray excess...Go to contribution page
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Roberta Sparvoli30/07/2015, 15:30The CALorimetric Electron Telescope (CALET) is a Japanese led international space mission by JAXA (Japanese AeroSpace Agency) in collaboration with the Italian Space Agency (ASI) and NASA. The instrument will be launched to the International Space Station in 2015. The major scientific goals for CALET are to measure the flux of cosmic-ray electrons (including positrons) from 1 GeV to 20 TeV,...Go to contribution page
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Dr Yi Zhang (IHEP)30/07/2015, 15:30The large field of view and low threshold energy are highly desirable properties for the ground based observations of high energy GRBs. However, larger field of view is difficult to achieve for current imaging atmospheric cherenkov telescopes (IACT), and the threshold below O(100)GeV is also a challenging for current EAS arrays. An alternative solution is to adopt the refractive optics system...Go to contribution page
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Yosui Akaike (University of Tokyo (JP))30/07/2015, 15:30CALorimetric Electron Telescope (CALET) is a detector for the precise measurement of cosmic ray electrons, gamma-rays and nuclei on the International Space Station. CALET has an imaging and a thick calorimeter, which provide excellent energy resolution and particle identification. For the on-orbit calibration, we plan to use the minimum ionizing particles of cosmic rays such as protons and...Go to contribution page
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Stephanie Wissel (UCLA)30/07/2015, 15:30The PeV neutrinos discovered by IceCube are of astrophysical origin, and their progenitors could be any of several source classes, including active galactic nuclei, gamma-ray bursts, or pulsars. Such high-energy accelerators would produce neutrinos up to hundreds of PeV, which motivates the development of neutrino telescopes with the sensitivity, energy resolution, and pointing resolution...Go to contribution page
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Dr Andrii Tykhonov (Universite de Geneve (CH))30/07/2015, 15:30An overview is given for the offline software framework and reconstruction software of the DAMPE (DArk Matter Particle Explorer) gamma-ray telescope. DAMPE is one of the five satellite missions in the framework of the Strategic Pioneer Research Program in Space Science of the Chinese Academy of Sciences, with a launch date scheduled for the fall 2015. The telescope consists of silicon-tungsten...Go to contribution page
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Stephen Kahler (Air Force Research Laboratory)30/07/2015, 15:30Prompt onsets and short rise times to peak intensities Ip have been noted in a few solar energetic (E > 10 MeV) particle (SEP) events from far behind the west limb. We discuss 14 archival and recent examples of these prompt events, giving their source longitudes, onset and rise times, and associated CME speeds. Their timescales and CME properties are not exceptional in comparison to a larger...Go to contribution page
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Eino Valtonen (University of Turku)30/07/2015, 15:30We investigate occurrence and characteristics of solar energetic particle (SEP) events related to full halo coronal mass ejections (FHCMEs) from source locations close to the central meridian of the Sun. From the halo CME catalog of Gopalswamy et al (2010) we selected CMEs detected between 1996 and end of 2014 which originated from source locations between longitudes E10 and W10 and divided...Go to contribution page
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tokonatsu yamamoto (Konan University)30/07/2015, 15:30In association with three large solar flares observed in 2012 March 5th (X1.1), 7th (X5.4) and 9th (M6.3), the solar neutron detector SEDA-FIB onboard the International Space Station has detected several events from solar direction. In this paper we present the time profiles of those neutrons and discuss the physics that may be related with a possible acceleration scenario of ions over the...Go to contribution page
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Dr Grigory Protopopov (Branch JSC URSC-ISDE)30/07/2015, 15:30In the paper we are presenting processing results of flight data from METEOR-M spacecraft, which are been supplying in the Roscosmos space radiation exposure on electronic components Monitoring System by Fedorov Institute of Applied Geophysics. METEOR-M spacecraft operates in polar orbit 832 km altitude with inclination of ~99 degrees. The spacecraft contains spectrometers to measure particle...Go to contribution page
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Renier Burger (North-West University)30/07/2015, 15:30Ab initio modulation models require a number of turbulence quantities as input for any reasonable diffusion tensor. While turbulence transport models describe the radial evolution of such quantities, they in turn require observations in the inner heliosphere as input values. To study long-term modulation requires turbulence data over at a least a solar magnetic cycle. As a start we analyze...Go to contribution page
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Wenxi Peng (IHEP)30/07/2015, 15:30Silicon Tungsten Tracker (STK) is one of the key payloads of Dark Matter Particle Explorer (DAMPE), which is planned to be launched at the end of 2015. In order to verify the design of STK, an Engineering Qualification Model (EQM) of STK was developed in 2014 and qualified for several space environmental tests, including vibration test, shock test, thermal vacuum test, thermal balance test and...Go to contribution page
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Igor Oya (DESY Zeuthen)30/07/2015, 15:30The Cherenkov Telescope Array (CTA) is the next-generation atmospheric Cherenkov gamma-ray observatory. CTA will consist of two installations, one in each hemisphere, containing tens of telescopes of different sizes. The CTA performance requirements and the inherent complexity associated with the operation, control and monitoring of such a large distributed multi-telescope array leads to new...Go to contribution page
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Michael DuVernois (University of Wisconsin)30/07/2015, 15:30The Askaryan Radio Array (ARA) is an ultra-high energy >100 PeV cosmic neutrino detector which is in phased construction near the South Pole. ARA searches for radio Cherenkov-like emission from particle cascades induced by neutrino interactions in the ice using radio frequency antennas (~150-800MHz) deployed at a design depth of 200m in the Antarctic ice. A prototype ARA Testbed station was...Go to contribution page
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Mr Johannes Schulz (Department of Astrophysics/IMAPP, Radboud University Nijmegen, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands)30/07/2015, 15:30The Auger Engineering Radio Array (AERA) is a low-energy extension of the Pierre Auger Observatory. It is used to detect radio emission from extensive air showers in the 30 - 80 MHz frequency band. A focus of interest is the dependence of the radio emission on shower parameters such as the energy and the distance to the shower maximum. After three phases of deployment, AERA now consists of 153...Go to contribution page
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Bo Gao (Institute of High Energy Physics, Chinese Academy of Sciences), Dr Mingjun Chen (Institute of High Energy Physics, Chinese Academy of Sciences)30/07/2015, 15:30A Large High Altitude Air Shower Observatory (LHAASO) is planned to be built in next year. As an important component of LHAASO project, Water Cherenkov Detector Array (WCDA) is a high sensitivity gamma ray and cosmic ray detector, which is mainly to survey the northern sky for VHE gamma ray sources. Currently, the R&D is quite finished, including a prototype water Cherenkov detector and an...Go to contribution page
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Dr Anne Lemière (APC)30/07/2015, 15:30The Very High Energy Galactic Center Ridge was revealed by H.E.S.S. in 2006, after subtraction of the point sources HESS J1745-290 possibly associated with Sgr A* and HESS J1747-281 associated with the composite supernova remnant G0.09+0.1. The hard spectrum of the Ridge emission and its spatial correlation with the local gas density suggest that the emission is due to collisions of multi-TeV...Go to contribution page
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Mr Jon Paul Lundquist (Telescope Array Project)30/07/2015, 15:30The seven year Telescope Array (TA) Middle Drum hybrid composition measurement shows agreement between Ultra-High Energy Cosmic Ray (UHECR) data and a light composition obtained with QGSJetII-03 or QGSJet-01c models. The data are incompatible with a pure iron composition, for all models examined, for energies log10(E/eV)>18.2. This is consistent with previous TA results. This analysis is...Go to contribution page
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Mr RAJIV KUMAR (GOVERNMENT PENCH VALLEY POST GRADUATE COLLEGE PARASIA)30/07/2015, 15:30A detailed investigation on geoeffectiveness of Coronal Mass Ejections [CMEs] associated with Magnetic Clouds [ MCs ] observed during 1996-2009 have been studied. The collected sample events are divided into two groups based on their association with CMEs related to geomagnetic storms, Dst ≤ -50 nT eg. 1. geoeffective events & 2. For nongeoeffective events, Dst ≥ -50 nT. Other field parameters...Go to contribution page
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Prof. Luobu Danzeng (Tibet University), Prof. Tianlu Chen (Tibet University)30/07/2015, 15:30Sub-100GeV to TeV is a crucial energy window in gamma ray astronomy because of its important role connecting the space experiments and the ground-based observations. The observations in this energy range are expected to provide rich information about the high energy emission from GRBs and AGNs, with which EBL can be measured, and knowledge about the galaxy formation and the evolution of the...Go to contribution page
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Javier Gonzalez (Bartol Research Institute, Univ Delaware)30/07/2015, 15:30In this contribution we will consider the methods at our disposal to estimate the mass of primary cosmic rays on an event-by-event basis using IceTop, the surface component of the IceCube detector at the geographical South Pole. We reconstruct the events using two lateral distribution functions, one for the muon component and one for the electrons and gamma rays. This results in a few...Go to contribution page
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Karoly Kecskemety (Wigner Research Centre, Budapest, Hungary)30/07/2015, 15:30Ion energy spectra and abundance ratios were studied in 0.04-2 MeV/nucleon ion fluxes using ACE/ULEIS data during the solar minimum between solar cycles 23 and 24. The unique prolonged minimum of 2006-2009 permitted to select 35 quiet time periods when suprathermal ion fluxes from near equatorial coronal holes (CH) were observed at 1 AU. The values of relative ion abundances indicate the...Go to contribution page
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Dr Francesco de Palma (INFN and Pegaso University)30/07/2015, 15:30While supernova remnants (SNRs) are widely thought to be powerful cosmic-ray accelerators, indirect evidence comes from a small number of well-studied cases. Here we systematically determine the gamma-ray emission detected by the Fermi Large Area Telescope (LAT) from all known Galactic SNRs, disentangling them from the sea of cosmic-ray generated photons in the Galactic plane. Using LAT data...Go to contribution page
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Prof. Leonid Kuzmichev (SINP MSU)30/07/2015, 15:30The aim of the TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) is to construct in the Tunka Valley (50 km from Lake Baikal) a complex, hybrid array for multi–TeV gamma-ray astronomy and CR studies. The array will consist of a wide angle Cherenkov array - Tunka-HiSCORE with ~3 km2 area, a net of IACT telescopes and muon detectors with total area of up to 2000 m2....Go to contribution page
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Prof. Jiwoo Nam (LeCosPA and Department of Physics, National Taiwan University)30/07/2015, 15:30TAROGE is an antenna array on the high mountains of Taiwan’s east coast for the detection of ultra-high energy cosmic ray (UHECR) in energy above 10^19 eV. The antennas will point toward the ocean to detect radiowave signals emitted by the UHECR-induced air-shower as a result of its interaction with the geomagnetic field. Looking down from the coastal mountain, the effective area is enhanced...Go to contribution page
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Dr Thomas Stroman (University of Utah), Dr Yuichiro Tameda (Institute for Cosmic Ray Research, University of Tokyo)30/07/2015, 15:30The chemical composition of ultra-high-energy cosmic rays (UHECRs) affects the observable distribution of air-shower $X_{\rm max}$ values, the atmospheric slant depth at which the number of secondary shower particles reaches its maximum. The observed $X_{\rm max}$ distributions at various primary UHECR energies can be compared with the distributions predicted by detailed detector simulations...Go to contribution page
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Anatoly Ivanov (Shafer Institute for Cosmophysical Research & Aeronomy)30/07/2015, 15:30Arrival directions of ultra-high energy cosmic rays (UHECRs) exhibit mainly isotropic distribution with a hint of small deviations in particular energy bins. In this paper available UHECR data are tested for circular uniformity of arrival directions using methods developed in directional statistics.Go to contribution page
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Wlodek Bednarek (University of Lodz)30/07/2015, 15:30Recently very energetic millisecond pulsar, J1823-3021A, has been discovered to emit pulsed GeV gamma-rays in the globular cluster NGC 6624. Assuming that this pulsar injects relativisitic leptons into its surrounding (as expected from modelling of radiative processes within the inner pulsar magnetosphere), we calculate the minimum level of expected TeV gamma-ray emission produced by these...Go to contribution page
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Dr Brian Wundheiler (Instituto de Tecnologías en Detección y Astropartículas)30/07/2015, 15:30The AMIGA enhancement (Auger Muons and Infill for the Ground Array) of the Pierre Auger Observatory consists of a 23.5 km$^2$ infill area where air shower particles are sampled by water-Cherenkov detectors at the surface and by 30 m$^2$ scintillation counters buried 2.3 m underground. The Engineering Array of AMIGA, completed since February 2015, includes 37 scintillator modules (290...Go to contribution page
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Veronique Van Elewyck (Universite Paris Diderot)30/07/2015, 15:30KM3NeT is a network of deep-sea neutrino telescopes to be deployed in the Mediterranean Sea, that will perform neutrino astronomy and oscillation studies. It consists of three-dimensional arrays of thousands of optical modules that detect the Cherenkov light induced by charged particles resulting from the interaction of a neutrino with the surrounding medium. The performance of the...Go to contribution page
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John Krizmanic (USRA/CRESST/NASA/GSFC)30/07/2015, 15:30The Non-Imaging CHErenkov Array (NICHE) will eventually measure the flux and nuclear composition of cosmic rays from below $10^{15}$ eV to $10^{18}$ eV by using measurements of the amplitude and time-spread of the air-shower Cherenkov signal to achieve a robust event-by-event measurement of XMax and energy. NICHE will have sufficient area and angular acceptance to have significant overlap with...Go to contribution page
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Paolo Piattelli (INFN)30/07/2015, 15:30Since the early days of experimental particles physics photomultipliers have played an important role in detector design. Also in astroparticle physics research, photomultipliers are largely used, in particular in experiments employing the technique of the detection of Cherenkov photons. Currently, the KM3NeT Collaboration is building a water Cherenkov neutrino telescope in the Mediterranean...Go to contribution page
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Paolo Piattelli (INFN)30/07/2015, 15:30The KM3NeT neutrino telescope is part of a deep-sea research infrastructure being constructed in the Mediterranean Sea. The basic element of the detector is the Detection Unit, a 700 meter long vertical structure hosting 18 Digital Optical Modules (DOMs). The DOM comprises 31 3'' photomultiplier tubes (PMTs), various instruments to monitor environmental parameters, and the electronic boards...Go to contribution page
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Douglas Bergman (University of Utah)30/07/2015, 15:30Observing UHECR air showers in stereo mode provides a precise measurement of their longitudinal profiles. The Gaisser-Hillas function fits air shower profiles well on average. The range of shower widths can be sensitive to details of average inelasticity and multiplicity in the early part of the shower. Such a measurement can then also be used to constrain the interaction models used in...Go to contribution page
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Mr Mohammad Sabouhi (Department of Physics , Semnan University, P.O. Box 35196-45399, Semnan, Iran)30/07/2015, 15:30Abstract: Different type of mechanisms are involved in generation and propagation of radio signals from cosmic ray air showers. The geomagnetic origin is one of such mechanisms which is very important especially in low frequency band studies. Based on CORSIKA and CoREAS we investigate the influence of earth magnetic field parameter on filtered peak radio amplitude patterns in 32–64 MHz...Go to contribution page
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Mr Satoshi Tsuchida (Ritsumeikan University)30/07/2015, 15:30The Kaluza-Klein (KK) particles, which are the feasible candidate for the dark matter, produce electrons and positrons when they annihilate in the Galactic halo. When the electrons and positrons propagate in the Universe, their direction is randomaized by the Galactic magnetic field, and energy is reduced by some energy loss mechanisms. We calculate the electron and positron spectrum expected...Go to contribution page
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Andrea De Franco (University of Oxford)30/07/2015, 15:30The Gamma-ray Cherenkov Telescope (GCT) is proposed to be part of the Small Size Telescope (SST) array of CTA (the Cherenkov Telescope Array). Its dual mirror optical design allows the use of a compact camera of diameter roughly 0.4m, the curved focal plane of which is equipped with 2048 pixels of ~0.2° angular size, resulting in a field of view of ~9°. The GCT camera is designed to...Go to contribution page
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Dr Troy Porter (Stanford University)30/07/2015, 15:30The Fast Radiation transport Numerical Kalculation for Interstellar Emission (FRaNKIE) code is a Monte Carlo code for calculating the electromagnetic emissions in galaxies. The code is highly parallel and optimised for both CPUs and co-processor accelerators. The code takes into account the interaction of the photon field with the interstellar medium in a self-consistent way, providing a...Go to contribution page
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Christian Sarmiento-Cano (Universidad Industrial de Santander)30/07/2015, 15:30The Space Weather program of the Latin American Giant Observatory (LAGO) is based on the installation of single or small arrays of water-Cherenkov detectors (WCD) spanned across Latin America. The Guane Array is one of the LAGO detection network nodes and it is located in the city of Bucaramanga, Colombia, at $986$ m a.s.l. The array is composed of three autonomous LAGO WCD installed at the...Go to contribution page
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Dr Fabian Schüssler (Irfu, CEA-Saclay)30/07/2015, 15:30Based on fundamental particle physics processes like the production and subsequent decay of pions in interactions of high-energy particles, close connections exist between the acceleration sites of high-energy cosmic rays and the emission of high-energy gamma rays, high-energy neutrinos and other messengers like gravitational waves. In most cases these connections provide both spatial and...Go to contribution page
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Oleh Kobzar (Institute of Nuclear Physics, Polish Academy of Sciences)30/07/2015, 15:30Active galactic nuclei (AGN) are considered as one of the most appropriate sources of cosmic rays with energy exceeding $~\sim 10^{18}~$eV. Virgo$~$A (M87 or NGC 4486) is the second closest to the Milky Way active galaxy. According to existing estimations it can be a prominent source of ultra high energy cosmic rays (UHECR). However not many events have been registered in the sky region near...Go to contribution page
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Dr Daan van Eijk (Nikhef), R Bruijn (Nikhef)30/07/2015, 15:30The KM3NeT collaboration is currently constructing the first phase of a cubic kilometer-scale neutrino detector in the Mediterranean Sea. The basic detection element, the Digital Optical Module (DOM), houses 31 three-inch PMT’s inside a 17 inch glass sphere. This multi-PMT concept yields a factor three increase in photocathode area, compared to a design with a single 10 inch PMT,...Go to contribution page
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Christian Sarmiento-Cano (Universidad Industrial de Santander)30/07/2015, 15:30The Latin American Giant Observatory (LAGO) is an extended Cosmic Ray (CR) observatory operating in nine Latin American countries. Within the LAGO framework, several scientific and academic programs are being developed and conducted. One of them, the LAGO Space Weather program, aims to produce real time, high time resolution and high quality data of the flux of secondary particles at each site...Go to contribution page
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Justin Bray (University of Manchester)30/07/2015, 15:30The lunar Askaryan technique, which involves searching for Askaryan radio pulses from particle cascades in the outer layers of the Moon, is a method for using the lunar surface as an extremely large detector of ultra-high-energy particles. The high time resolution required to detect these pulses, which have a duration of around a nanosecond, puts this technique in a regime quite different...Go to contribution page
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Dr Alberto Dominguez (Clemson University)30/07/2015, 15:30The extragalactic background light (EBL) contains fundamental cosmological and galaxy evolution information. Very high energy observations of extragalactic sources, such as blazars, can be used to extract this information because of the pair-production interaction between gamma-ray and EBL photons. We present (almost) simultaneous broad-band data of a dozen BL Lacs that allow us to make the...Go to contribution page
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Prof. Paul Kooijman (University of Amsterdam)30/07/2015, 15:30In this paper we provide a detailed description of the mechanical structure of the 750 m high KM3NeT detection unit. The choices made for the different materials and their behaviour under the loads expected during deployment an during the lifetime of the experiment will be discussed, as will the motion of the unit under influence of the sea currents. The unique method of deployment, which...Go to contribution page
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Jean-Noël CAPDEVIELLE (CNRS)30/07/2015, 15:30GHOST (1) is .an extension of HDPM (Hybrid dual parton model) originally implemented in CORSIKA(2). It reproduces the pseudo-rapidity charged distribution for NSD events measured by LHCb, CMS and TOTEM …up to √s = 8TeV. At this energy, two pairs of normal generators are centered symmetrically, respectively at small rapidity 1.05 and mid rapidity 4.1, with respective widths 0.95 and 1.8 units...Go to contribution page
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Christine Peters (RWTH Aachen University)30/07/2015, 15:30Precise measurements of the muon content of extensive air showers are essential for the identification of the chemical composition of ultra-high-energy cosmic rays. We therefore propose a new scintillator detector prototype, the Aachen Muon Detector (AMD). It can complement existing ground arrays composed of e.g. water Cherenkov detector stations. The detector consists of 64 scintillator tiles...Go to contribution page
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Douglas Bergman (University of Utah)30/07/2015, 15:30The Non-Imaging CHErenkov Array (NICHE) will be a low energy extension to Telescope Array and TALE using an array of closely spaced (~200 m) light collectors covering an area of ~2 square km. It will be deployed in the field of view of TALE and will overlap it in energy range. Showers with energies 1-100 PeV will be reconstructed using both the Cherenkov light Lateral Distribution and the...Go to contribution page
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Dr Alexander Karelin (NRNU MEPhI)30/07/2015, 15:30The north-south asymmetry of galactic cosmic rays has been measured in the PAMELA experiment during the time period 2010-2014. Inside this period the solar magnetic field has been flipped. This gave the opportunity to follow the variation of the asymmetry effect. The variation of high energy cosmic rays ratio for particles arriving from Nord and South has been measured with aid of PAMELA...Go to contribution page
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Mr Satoshi Tsuchida (Ritsumeikan University)30/07/2015, 15:30The lightest Kaluza-Klein particle (LKP), which appears in the theory of universal extra dimensions, is one of the good candidates for cold dark matter. We assume the LKP mass ranges from 500 GeV to 1000 GeV. We focus on the LKP annihilation modes which contain gamma-rays as final products. The gamma-ray spectrum from LKP annihilation has a characteristic peak structure near the LKP mass...Go to contribution page
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Bair Shaybonov (JINR)30/07/2015, 15:30The BAIKAL-GVD neutrino telescope in Lake Baikal is intended for studying astrophysical neutrino fluxes by recording the Cherenkov radiation of the secondary muons and showers generated in neutrino interactions. The first stage of BAIKAL-GVD will be equipped with about 2400 optical modules. Each of these optical modules consists of a large area photomultiplier R7081-100 made by Hamamatsu...Go to contribution page
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Dr Alberto Carramiñana Alonso (INAOE)30/07/2015, 15:30The Latin American Giant Observatory (LAGO) is an extended cosmic ray observatory, which consists in a wide network of water Cherenkov detectors (WCDs) located in nine different countries. The geographic distribution of the LAGO sites, with different altitudes and geomagnetic rigidity cut-offs, combined with the new electronic system for control, atmospheric sensing and data acquisition on...Go to contribution page
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Dr Sergey Aleksandrin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))30/07/2015, 15:30Dynamics of flux of high-energy charged particles trapped by geomagnetic field has been studied in this paper. As is known the Earth's magnetic field changes in direction and magnitude, as a result of this the South Atlantic Anomaly (SAA) region drifts. Using data of satellite experiments ARINA and VSPLESK geographical distributions of proton flux (80-100 MeV) were studied since 2006 to 2014....Go to contribution page
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Ruben Lopez-Coto (Institut de Fisica d'Altes Energies - IFAE)30/07/2015, 15:30Imaging atmospheric Cherenkov telescopes such as the MAGIC telescopes are built to achieve the lowest possible energy threshold. The trigger system of these telescopes is one of the most important parts to achieve it. The main problem when decreasing the energy triggered by an IACT is the rapid increase of accidental triggers caused by the ambient light and the after pulses of the...Go to contribution page
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Mario Pimenta (LIP Laboratorio de Instrumentaco e Fisica Experimental de Particulas)30/07/2015, 15:30In this work we study the energy evolution of the number of muons in air showers. Motivated by future plans for UHECR experiments, the analysis developed here focus on how the evolution of the moments of the shower observables distributions (Xmax and the number of muons at ground) can be used to assess the validity of a mass composition scenario, surpassing the current uncertainties on the...Go to contribution page
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Dr Masato TAKITA (Institute for Cosmic Ray Research, the University of Tokyo)30/07/2015, 15:30We plan to build a large (approximately 10,000 m**2) water Cherenkov- type muon detector array under the existing Tibet air shower array at 4,300 m above sea level, to observe 10-1000 TeV gamma rays from cosmic-ray accelerators in our Galaxy with wide field of view at very low background level. A gamma-ray induced air shower has significantly less muons compared with a cosmic-ray induced...Go to contribution page
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Dr Leonid Tkachev (JINR, Dubna)30/07/2015, 15:30The TUS space experiment is aimed to study energy spectrum and arrival distribution of UHECR at energy range above 1020 eV by the measurement of the EAS fluorescent radiation in atmosphere. The TUS mission is planned for launch at the end of 2015 at the dedicated “Lomonosov” satellite. TUSSIM program package was developed to simulate the TUS detector performance including the Fresnel mirror...Go to contribution page
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Elisa Prandini (University of Geneva)30/07/2015, 15:30The blazar PG1553+113 is an active galaxy with uncertain redshift detected at very high energies (VHE; E > 100 GeV) both during high and quiescent states. We have observed with the MAGIC telescopes from La Palma PG 1553+113 at VHE since 2005, making this blazar one of the best studied MAGIC sources. Recently, the Fermi/LAT collaboration has reported the detection of a hint of a ~2-year...Go to contribution page
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Bair Shaybonov (JINR)30/07/2015, 15:30The first stage of the Baikal-GVD neutrino telescope will be composed of more than two thousand light sensors, Optical Modules (OMs), installed deep underwater in Lake Baikal. We describe developed calibration methods which use OM LEDs, the calibration laser source, atmospheric muons etc. and discuss the performance of these methods.Go to contribution page
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Ignacio Minaya (urn:Google)30/07/2015, 15:30The asymmetry in the risetime of signals in Auger surface detector stations with respect to the direction of an incoming air shower is a source of information on shower development. The asymmetry is due to a combination of the longitudinal evolution of the shower and geometrical effects related to the angles of incidence of the particles into the detectors. The magnitude of the effect depends...Go to contribution page
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Dr Bo Gao (Institute of High Energy Physics, Chinese Academy of Sciences), Dr Hanrong Wu (Institute of High Energy Physics, Chinese Academy of Sciences), Mr Huicai Li (School of Physics, Nankai University), Dr Mingjun Chen (Institute of High Energy Physics, Chinese Academy of Sciences), Ms Xiaojie Wang (Institute of High Energy Physics, Chinese Academy of Sciences), Prof. Zhiguo Yao (Institute of High Energy Physics, Chinese Academy of Sciences)30/07/2015, 15:30As a major component of the LHAASO project, the main physical goal of the Water Cherenkov Detector Array (WCDA) is to survey the northen sky for VHE gamma ray sources. One of the key issues to fulfill this goal is the angular resolution and the pointing precision of the detector, which depends much on the time calibration of the whole array. In this paper, a new time calibration technique...Go to contribution page
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Matteo Duranti (Universita e INFN, Perugia (IT))30/07/2015, 15:30In this contribution we present the calculation of a realistic, time dependent geomagnetic cutoff along the International Space Station orbit, at ?400 km above the Earth?s surface with an inclination of 51.6 degrees. For this work, based on the analysis of data collected by the AMS02 experiment during the first year of operation, the TS05 and IGRF models have been employed, including the...Go to contribution page
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Dr Mieke Bouwhuis (NIKHEF)30/07/2015, 15:30The KM3NeT neutrino telescope is a next generation Cherenkov array containing thousands of optical modules being installed in deep sea at a depth larger than 2500 m and more than 40 km distance from the shore. For the precise event reconstruction sub-nanosecond precision synchronization between modules is required. Its realization exploits the White Rabbit system to synchronize clocks between...Go to contribution page
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Vladimir Mikhailov (NRNU MEPHI)30/07/2015, 15:30The PAMELA and the ARINA experiments onboard satellite RESURS-DK1 are carried out since 2006 up to now. PAMELA instrument in the first place is intended to measure of high energy antiparticles in cosmic rays while main purpose of the ARINA instrument is study of high-energy charged particle bursts in the magnetosphere. Both these experiments have possibility to study protons in the inner...Go to contribution page
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Michael Zacharias30/07/2015, 15:30The detection of very rapid flares on the order of minutes in blazars has spawned a lot of theoretical activity. Even though many models take time-dependent effects (such as varying magnetic fields, etc) into account, a time-dependent nature of the injection process is usually omitted. In this presentation it is shown using the standard one-zone model that time-dependent injection has strong...Go to contribution page
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Pavel Motloch (University of Chicago)30/07/2015, 15:30Detection of transition radiation from neutrino-induced showers escaping a dense medium is a promising technique which might be employed in future generations of ultra-high energy neutrino detectors. Using the well-known Zas-Halzen-Stanev (ZHS) Monte Carlo simulation, we have computed the electric field created by showers crossing a dense medium-air interface. Our calculations show that...Go to contribution page
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Dr Bo Gao (IHEP, Beijing), Dr Hanrong Wu (IHEP, Beijing), Mr Huicai Li (School of Physics, Univeristy of Nankai), Dr Mingjun Chen (IHEP, Beijing), Ms Xiaojie Wang (IHEP, Beijing), Prof. Zhiguo Yao (IHEP, Beijing)30/07/2015, 15:30The Water Cherenkov Detector Array (WCDA) of the LHAASO project is to be built in Daocheng, Sichuan Province of China. It comprises of 4 neighboring ponds, each in dimension of 150 m $\times$ 150 m, and divided into 900 cells, with a PMT in each cell. A triggerless scheme is to be adopted for the data acquiring system, in which all the single channel signals are synchronized and transferred to...Go to contribution page
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Dr Tanguy Pierog (KIT)30/07/2015, 15:30Interpretation of EAS measurements strongly depends on detailed air shower simulations. One of the big limitations is the calculation time of Monte-Carlo programs like CORSIKA at very high energies. Thinning algorithm has been introduced in the past to reduce the computation time and disk space of the output at the price of the loss of small scale structures in simulated air showers. Thanks to...Go to contribution page
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Martin Pohl (DESY)30/07/2015, 15:30The anisotropy in cosmic-ray arrival directions in the TeV-PeV energy range shows both large and small-scale structures. While the large-scale anisotropy may arise from diffusive propagation of cosmic rays, the origin of the small-scale structures remains unclear. We perform three-dimensional Monte-Carlo test-particle simulations, in which the particles propagate in both magnetostatic and...Go to contribution page
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Dr Vladimir Makhmutov (Lebedev Physical Institute of the Russian Academy of Sciences)30/07/2015, 15:30We present and discuss the cosmic ray increases detected with the CARPET cosmic ray instruments during several solar flares in 2011-2013. The CARPET cosmic ray detectors were installed at El Leoncito Astronomical Complex (CASLEO; Argentina) in 2006 and at CERN (Switzerland) in 2009. We compare the CARPET data with the X-ray and proton data from GOES and Fermi LAT/GBM measurements as well as...Go to contribution page
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Thanh Nguyen30/07/2015, 15:30The Crab pulsar and plerion are some of the brightest and best studied non-thermal astrophysical sources. The recent discovery of pulsed gamma-ray emission above 100 GeV from the Crab pulsar with VERITAS (the Very Energetic Radiation Imaging Telescope Array System) challenges commonly accepted pulsar emission models and puts the gamma-ray emission region far out in the magnetosphere – close to...Go to contribution page
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Dr Donghwa Kang (Karlsruhe Institute of Technology)30/07/2015, 15:30KASCADE-Grande was a multi-detector array to measure individual air showers of cosmic rays in the energy range of 10 PeV up to 1 EeV. Based on full data sets measured by KASCADE-Grande, an upper limit to the flux of ultra-high energy gamma rays in primary cosmic rays is determined. The analysis is performed by selecting air showers with low muon contents due to a small fraction of secondary...Go to contribution page
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Henrike Fleischhack (DESY)30/07/2015, 15:30The cores of Ultra-Luminous InfraRed Galaxies (ULIRGs) are very dense environments, with a high rate of star formation and hence supernova explosions. They are thought to be sites of cosmic-ray acceleration, and are predicted to emit $\gamma$-rays in the GeV to TeV range. So far, no ULIRG has been detected in $\gamma$-rays. Arp 220, the closest ULIRG to Earth, has been well studied, and...Go to contribution page
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David Kieda (University of Utah)30/07/2015, 15:30In this talk, we report the VERITAS discovery of very high energy (E > 100 GeV) gamma ray emission from RGB J2243+204, previously detected in radio and X-ray. This source is also consistent with the Fermi-LAT gamma-ray source 1FHL J2244.0+2020. RGB J2243+204 has been classified both as an intermediate-frequency-peaked BL Lac object and as a high-frequency-peaked BL Lac object in the past....Go to contribution page
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Matteo Cerruti (Harvard-Smithsonian Center for Astrophysics)30/07/2015, 15:30The high-frequency-peaked BL Lac object 1ES 0806+524 (z=0.138) was discovered as a source of very-high-energy (VHE, E>100 GeV) gamma-ray photons in 2008 with the VERITAS telescope array, at a level of 1.8% of the Crab Nebula flux above 300 GeV. Since then, VERITAS has continued observing the source over multiple seasons, significantly improving the significance of the detection. We report the...Go to contribution page
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Karlen Shahinyan (University of Minnesota)30/07/2015, 15:30HESS J1943+213 is a very-high-energy (VHE; > 100 GeV) gamma-ray point source detected during the H.E.S.S. Galactic Plane Survey. Radio, infrared, X-ray, and GeV gamma-ray counterparts have been identified for HESS J1943+213; however, the classification of the source is still uncertain. Recent publications have argued primarily in favor of either an extreme BL Lac object behind the Galactic...Go to contribution page
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Ralph Bird (UCD Dublin)30/07/2015, 15:30Diffuse gamma rays are tracers of cosmic rays, providing information on their origin and diffusion. M 31 (the Andromeda Galaxy) is the closest spiral galaxy to the Milky Way (d = 750 kpc) and is very well studied at all wavelengths, thus it is a prime target for the study of diffuse gamma-ray emission. The very-high-energy (VHE, E > 100 GeV) gamma-ray observatory VERITAS has conducted 45 hours...Go to contribution page
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Dr Bo Gao (Institute of High Energy Physics, CAS), Prof. Chunxu Yu (School of Physics, Nankai University), Dr Hanrong Wu (Institute of High Energy Physics, CAS), Mr Huicai Li (School of Physics, Nankai University), Dr Mingjun Chen (Institute of High Energy Physics, CAS), Ms Xiaojie Wang (Institute of High Energy Physics, CAS), Prof. Zhiguo Yao (Institute of High Energy Physics, CAS)30/07/2015, 15:30The Large High Altitude Air Shower Observatory (LHAASO) project is to be built at Daocheng, Sichuan Province, 4400 m a.s.l., in a few years. As one of the major components of the LHAASO project, LHAASO-WCDA, a water Cherenkov detector array with an area of 90000 m2, contains around 400,000 tons of purified water. To gain full knowledge of the water Cherenkov technique and to investigate the...Go to contribution page
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Ms Monica Nunes (UNICAMP)30/07/2015, 15:30The zenital dependence of muon intensity which reaches the earth's surface is well known as proportional to cos^n (theta). Generally, for practical purposes and simplicity in calculations, n is taken as 2. However, compilations of measurements show dependence on the geographical location of the experiments as well as the muons energy range. Since analytical solutions appear to be increasingly...Go to contribution page
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Prof. Edward Stone (Caltech)30/07/2015, 16:30After a thirty-five year journey, Voyager 1 began observing the properties on the very local interstellar medium on August 25, 2012, at a radial distance of 121.6 AU. Now at 132 AU, Voyager 1 has been exploring the region where the interstellar wind and magnetic field are perturbed by the flow of interstellar ions around the heliosphere and the formation of a wall of H atoms. The plasma...Go to contribution page
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Mathieu de Naurois (CNRS)30/07/2015, 17:00After nearly a decade of operation, the three major arrays of atmospheric Cherenkov telescopes have revolutionized our view of the Very High Energy Universe, unveiling more than 100 sources of various types. MAGIC, consisting of two 17m diameter telescopes on the Canary island of La Palma, and VERITAS, with four 12m telescopes installed in southern Arizona, USA, largely explored the...Go to contribution page
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Miguel Pato (OKC Stockholm)30/07/2015, 17:30The presence of dark matter in spiral galaxies was inferred long ago by measuring the rotational speed of the gas across each galaxy. Applying the same technique to the Milky Way, a spiral itself, is much more challenging due to our peculiar position and thus the Galactic distribution of dark matter remains poorly constrained to this day. In this talk, I shall introduce two important...Go to contribution page
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Samuel Ting (Massachusetts Inst. of Technology (US))30/07/2015, 18:00In four years on the International Space Station, the AMS experiment has collected more than 65 billion cosmic rays up to TeV energies. The latest results will be summarized.Go to contribution page
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Prof. Felix Aharonian (DIAS Ireland and MPI Heidelberg)31/07/2015, 09:00Gamma-rays observations are believed to play a crucial role in the solution to the long standing problem of origin of cosmic rays (CRs). The results obtained over the last decade with the space and ground based detectors have demonstrated the great potential of gamma-ray astronomy, in particular in the context of the search and identification of major contributors to the flux of...Go to contribution page
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Dr Ralph Engel (KIT)31/07/2015, 09:45to be filledGo to contribution page
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Dr Richard Tuffs (Max-Planck-Institut fuer Kernphysik)31/07/2015, 11:00We present a solution for the interstellar radiation fields (ISRF) in the Milky Way from UV to submm wavelengths based on axisymmetric radiation transfer modelling of the panchromatic SED of the galaxy in direct and dust-reradiated starlight as constrained by all-sky imaging by the IRAS, COBE and Planck satellites. This is the first self-consistent model of the spatial and spectral...Go to contribution page
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Chris Gordon (University of Canterbury)31/07/2015, 11:00The High-Energy Stereoscopic System (HESS) has detected diffuse TeV emission correlated with the distribution of molecular gas along the Ridge at the Galactic Center. Diffuse, nonthermal emission is also seen by the Fermi large area telescope (Fermi-LAT) in the GeV range and by radio telescopes in the GHz range. Additionally, there is a distinct, spherically symmetric excess of gamma rays...Go to contribution page
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Dr Emiliano Mocchiutti (INFN, Sezione di Trieste, Italy), Vladimir Mikhailov (NRNU MEPHI)31/07/2015, 11:00Precise measurements of electron and positron fluxes in energy range from 80 MeV to several GeV below the geomagnetic cutoff rigidity were carried out using the PAMELA magnetic spectrometer. The instrument was launched on June 15th 2006 onboard the Resurs-DK satellite on an orbit with the inclination 70 degrees and the altitude 350-600 km. It is continue to collect data so far. The...Go to contribution page
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Stefan Ferreira (North-West University)31/07/2015, 11:00The time-dependent modulation of galactic cosmic rays in the heliosphere is studied over different polarity cycles by computing 2.5 GV proton intensities using a two-dimensional, time-dependent modulation model. By incorporating recent theoretical advances in the relevant transport parameters in the model we showed in previous work that this approach gave realistic computed intensities over a...Go to contribution page
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Prof. Glennys Farrar (New York University)31/07/2015, 11:00Our understanding of the Galactic magnetic field (GMF) has improved tremendously in recent years. The Jansson-Farrar (2012) (JF12) GMF model is currently the most realistic and comprehensive model available. It was constrained by fitting all-sky Faraday Rotation Measures of ~40k extragalactic sources, simultaneously with WMAP polarized (Q,U) and total synchrotron emission maps, which together...Go to contribution page
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Gero Müller (Phys. Institute 3A, RWTH Aachen University)31/07/2015, 11:15We propose to perform an independent test of recent galactic magnetic field parameterizations, and to obtain information on the origin of cosmic rays. Based on 3D simulations of cosmic nuclei from their sources to observation, we determine the average expected arrival direction for protons. As energy decreases, the average direction is expected to move away from the source line of...Go to contribution page
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Dr Troy Porter (Stanford University)31/07/2015, 11:15The inner region of the Milky Way is one of the most interesting and complex regions of the gamma-ray sky. The intense interstellar emission and resolved point sources, as well as potential contributions by other sources such as unresolved source populations and dark matter, complicate the interpretation of the data. In this talk, we report on the Fermi-LAT team analysis of a 15x15 degree...Go to contribution page
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Prof. Jacek Niemiec (Institute of Nuclear Physics PAN, Krakow, Poland)31/07/2015, 11:15The nearly circular band of energetic neutral atom (ENA) emission dominating the field of view of the Interplanetary Boundary EXplorer satellite (IBEX), is most commonly attributed to the effect of charge exchange of secondary pickup ions (PUIs) gyrating about the magnetic field in the outer heliosheath and the interstellar space beyond. The main difficulty with this model is the problem...Go to contribution page
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Vladimir Mikhailov (NRNU MEPHI)31/07/2015, 11:15The PAMELA magnetic spectrometer is continuously gathering data about cosmic ray positrons and electrons on board the Resurs DK satellite since July 2006. Below about 10 GeV cosmic rays are strongly modified by charge-sign dependent solar modulation effects. In this work the time variation of the positron fraction as observed by the PAMELA experiment is presented. The large data set, about...Go to contribution page
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Ms Xilu Wang (University of Illinois at Urbana and Champaign)31/07/2015, 11:15A Galactic type Ia supernova(SN Ia) event would go entirely unnoticed to us due to the large optical extinction in the Milky Way plane, the weak neutrinos signal from a SN Ia, as well as the dim soft X-rays signal. But the recent SN2014J confirms that SN Ia emit gamma-ray lines, which lasts for weeks, from the 56Ni → 56Co → 56Fe decay. The lines span from 158 keV to 2.6 MeV, which occur just...Go to contribution page
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Dr Yanping Chen (NYU Abu Dhabi)31/07/2015, 11:30Studies discerning whether there is a significant correlation between UHECR arrival directions and optical AGN are hampered by the lack of a uniformly selected and complete all-sky AGN catalog. To remedy this, we are preparing such a catalog based on the 2MASS Redshift Survey (2MRS), a spectroscopic sample of ~45,000 galaxies complete to a K magnitude of 11.75 over 91% of the sky. We have...Go to contribution page
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Behrouz Khiali (University of São Paulo)31/07/2015, 11:30Cosmic Ray (CR) acceleration is still challenging in high energy astrophysics. A first-order Fermi mechanism within magnetic reconnection layers has been demonstrated to be a powerful CR accelerator in recent studies. In this work we have investigated this acceleration process in the nuclear region of radio-galaxies and microquasars and found that the very high energy (VHE) emission from these...Go to contribution page
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Du Toit Strauss (North-West University, South Africa)31/07/2015, 11:30When the Voyager 1 spacecraft crossed the heliopause, energetic particle observations showed unexpectedly large anisotropies in the local interstellar medium. For high energy galactic cosmic rays, the anisotropy is such that a deficiency of particles near pitch-angles of 90 degrees was recorded. For low energy anomalous cosmic rays, the anisotropy is completely different; an enhancement near...Go to contribution page
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Matteo Duranti (Universita e INFN, Perugia (IT))31/07/2015, 11:30We present a measurement of the cosmic ray (e$^{+}$+e$^{−}$) flux in the range 0.5 GeV to 1 TeV based on the analysis of 10.6 million (e$^{+}$+e$^{−}$) events collected by AMS. The statistics and the resolution of AMS provide a precision measurement of the flux. The flux is smooth and reveals new and distinct information. AMS measurements of individual e$^{+}$ and e$^{−}$ fluxes show neither...Go to contribution page
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Francesca Calore (University of Amsterdam)31/07/2015, 11:30Recently, a spatially extended excess of gamma rays collected by the *Fermi*-LAT from the inner region of the Milky Way has been claimed by different and independent groups. I will present a robust characterisation of the morphology and spectral properties of such an extended diffuse emission, including systematic uncertainties that are related to the high density of cosmic rays, gas, magnetic...Go to contribution page
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Dr Xiaocheng Guo (University of Alabama in Huntsville)31/07/2015, 11:45We investigate the possibility of the modulation of galactic cosmic ray (GCR) in the outer heliosheath (OHS) by means of the numerical simulations. The transport of GCR in the heliosphere is simulated by solving the Parker transport equation through a stochastic method, and the plasma background of the heliosphere is obtained from a global MHD-neutral simulation. The results confirm that no...Go to contribution page
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Dr Alfredo Urbano (SISSA - International School for Advanced Studies)31/07/2015, 11:45A GeV gamma-ray excess has possibly been individuated in Fermi-LAT data from the Galactic Center, and interpreted in terms of Dark Matter annihilations, either in hadronic or leptonic channels. However, the identification of such an excess strongly relies on the capability of carefully assessing the background over which the excess is supposed to emerge. For this reason, it is crucial to...Go to contribution page
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Andrei Kounine (Massachusetts Inst. of Technology (US))31/07/2015, 11:45A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. The measured positron fraction shows a rapid decrease from 1 to ∼8 GeV followed by a steady increase and reaching a maximum value at 275+-32 GeV. The new results show, for the first time, that above ~275 GeV the...Go to contribution page
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Luís H. S. Kadowaki (University of Sao Paulo (IAG-USP))31/07/2015, 11:45Fast magnetic reconnection events can be a very powerful mechanism operating in the core region of microquasars and active galactic nuclei (AGNs). In earlier work, it has been suggested that the power released by fast reconnection events between the magnetic field lines lifting from the inner accretion disk region and the lines anchored into the central black hole (BH) could accelerate...Go to contribution page
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Radomir Smida (Karlsruhe Institute of Technology)31/07/2015, 11:45Arrival directions of ultra-high energy cosmic rays from the direction to one of the brightest radio source Virgo A were studied with recent models of the Galactic magnetic field. The obtained image of this radiogalaxy is similar for all studied models and it is unique in the comparison with images of other possible point source candidates. We present a method suitable for identifying cosmic...Go to contribution page
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Vladimir Florinski31/07/2015, 12:00In August of 2012 the Voyager 1 space probe has left the solar-wind bubble of ionized gas we call the heliosphere and entered the denser and colder environment of the interstellar cloud surrounding the solar system. Energetic charged particles underwent dramatic changes past the heliopause: the heliospheric ions disappeared completely, while the galactic cosmic rays were for the first time...Go to contribution page
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Gregory Tarle (University of Michigan), JIm Musser (Indiana University), Mr Joseph Gennaro (U. Michigan), Dr Mathew Geske (Penn. State U.), Dr Michael Schubnell (U. Michigan), Prof. Muller Dietrich (U. Chicago), Prof. Scott Nutter (N. Kentucky U.), Prof. Scott Wakely (U. Chicago), Stephane Coutu (Penn State University), nahee park (University of Chicago)31/07/2015, 12:00Electrons at energies greater that 1 TeV must originate in the local Galactic neighborhood, within a kpc or so, owing to their rapid energy loss rates during propagation. Only a few candidate acceleration sites exist within this horizon, such as the Vela, Monogem or Cygnus Loop supernova remnants, and thus a measurement of the multi-TeV cosmic-ray electron flux would be a very useful probe of...Go to contribution page
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Prof. Wlodek Bednarek (University of Lodz)31/07/2015, 12:00The central engines in active galaxies are immersed in huge central stellar clusters and also surrounded by spherical halos with radii of a few tens of kpc containing from a few hundred up to several tausend globular clusters. We investigate the acceleration of particles on the shocks formed in collisions of different compact objects at the kpc distances with jet plasma. We show that...Go to contribution page
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880. Northern sky Galactic Cosmic Ray anisotropy between 10-1000 TeV with the Tibet Air Shower ArrayZhaoyang Feng (IHEP)31/07/2015, 12:00We report on the observation of the large-scale sidereal anisotropy of Galactic Cosmic Rays (GCRs) between 10 TeV and 1 PeV, with the data collected by the Tibet Air Shower experiment between October 1995 and February 2010. The energy resolution is improved and the data with zenith angle up to 60 degrees is used.The two-dimensional intensity map with declination from -30 degree to 90 degree at...Go to contribution page
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Christoph Weniger (University of Amsterdam)31/07/2015, 12:00We present a new, powerful and background-independent technique to constrain the luminosity function of point source populations that might contribute to the observed GeV excess emission around the Galactic center. Using this technique, we search for indications of such a population in the latest Fermi LAT data and discuss, for the case of milli-second pulsars, the implications for...Go to contribution page
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Dr David Staszak (McGill University)31/07/2015, 12:15Cosmic-ray electrons and positrons (CREs) at GeV-TeV energies are a unique probe of our local Galactic neighborhood. CREs lose energy rapidly via inverse Compton scattering and synchrotron processes while propagating in the Galaxy, effectively placing a maximal propagation distance for TeV electrons of order $\sim$1 kpc. Within this window, production of CREs can come from a handful of known,...Go to contribution page
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Dr Noemie Globus (Tel-Aviv University)31/07/2015, 12:15We present a simple theoretical and phenomenological model accounting for the evolution of the cosmic-ray spectrum and composition with energy, based on the available data over the entire spectrum. We show that there is no need to postulate any additional component, other than one single Galactic component depending on rigidity alone, and one extragalactic component, whose characteristics are...Go to contribution page
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Mr Adrian Vogt (University of Kiel)31/07/2015, 12:15Although the main processes are well known, the transport of charged particles in the inner heliosphere is still under investigation. Because of a GPU-accelerated algorithm to solve Parker's transport equation by means of stochastic differential equations (SDEs), our newly developed code offers the possibility to perform extensive parameter studies. In this study we use counting rates of...Go to contribution page
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Matthieu Kieffer (LPNHE, Paris)31/07/2015, 12:15Most of results from astrophysical observations point to a 27% contribution of non-baryonic dark matter to the mass-energy budget of the universe. Although still undetermined, strongly motivated candidates in form of weakly interactive massive particles could explain its nature and their annihilations or decays would give rise to detectable signatures in gamma rays. In 2012, the H.E.S.S....Go to contribution page
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Prof. Soebur Razzaque (University of Johannesburg)31/07/2015, 12:15Gamma-ray bursts (GRBs), the most powerful sources of gamma rays in the universe, have been detected at energies up to 95 GeV. This energy is at the verge of what is known as the Very High Energy (VHE, above 100 GeV) emission regime. VHE sources are targets for currently running and upcoming ground-based Cherenkov telescopes. It is therefore very important to understand the VHE emission...Go to contribution page
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Kenichi Sakai (NASA/GSFC/CRESST/UMBC)31/07/2015, 14:00The energy spectra of cosmic-ray protons and helium near solar minimum were precisely measured with BESS-Polar II (Balloon-borne Experiment with a Superconducting Spectrometer) during a long-duration flight over Antarctica in December 2007 and January 2008.The absolute fluxes and spectral shapes of primary protons and helium probe the origin and the propagation history of cosmic rays in the...Go to contribution page
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Dr Razmik Mirzoyan (Max-Planck-Institute for Physics)31/07/2015, 14:00Abstract MAGIC is a ground-based astrophysics instrument for measuring gamma rays in the energy range ~ 35 GeV – 50 TeV. It is the first instrument, which paved the road into the sub-100 GeV gamma-ray sky. MAGIC consists of two 17m diameter, F/1.03 imaging atmospheric Cherenkov telescopes, which are separated by 85m distance and are located at 2200m a.s.l. in the Roque de los Muchachos...Go to contribution page
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Michael Unger (NYU & KIT)31/07/2015, 14:00The atmospheric depth $X_\mathrm{max}$ at which the particle number of an air shower reaches its maximum is a good indicator for the mass of the primary particle. We present a comparison of the energy evolution of the mean of $X_\mathrm{max}$ as measured by the Telescope Array and Pierre Auger Collaborations. After accounting for the different resolutions, acceptances and analysis...Go to contribution page
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Katsuki Hiraide (the University of Tokyo)31/07/2015, 14:00XMASS-I, the first phase of the XMASS project, is a direct detection dark matter experiment using 832 kg of liquid xenon at Kamioka in Japan. One of the signatures of dark matter in direct detection experiments is the annual modulation of the event rate due to the relative motion of the Earth around the Sun. We have continuously collected data with a low trigger threshold of 0.3 keVee for...Go to contribution page
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Ken Clark (University of Toronto)31/07/2015, 14:00Scientists have created the world's largest neutrino telescope, the IceCube Neutrino Observatory, in one of the planet’s most extreme environments at South Pole Station Antarctica. Completed in 2010, and instrumenting more than a cubic-kilometre of ice, IceCube also includes a low-energy detector array, called DeepCore, that has performed world-leading indirect dark matter searches and very...Go to contribution page
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Dr Alexey Yushkov (University of Siegen)31/07/2015, 14:15We report for the first time on the measurement of the correlation between the depth of shower maximum and the signal in water-Cherenkov stations for events reconstructed by both the fluorescence and surface detectors of the Pierre Auger Observatory. Such a correlated measurement is a unique feature of a hybrid air shower observatory and allows us to determine the purity of the cosmic-ray...Go to contribution page
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Dr Nicolas PICOT-CLEMENTE (Institute for Physical Science and Technology, University of Maryland)31/07/2015, 14:15The Balloon-Borne Experiment with a Superconducting Spectrometer (BESS-Polar II) flew successfully over Antarctica for 24.5 days in December 2007 through January 2008 during a period of minimum Solar activity. BESS-Polar II is configured with a solenoidal superconducting magnet and a suite of various particle detectors. It allows to accurately identify hydrogen and helium isotopes among the...Go to contribution page
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Dr Darko Veberic (Karlsruhe Institute of Technology (DE))31/07/2015, 14:15In case dark matter consists of hidden-sector photons which kinetically mix with regular photons, a tiny oscillating electric-field component is present wherever we have dark matter. In the surface of conducting materials this induces a small amount of radiation being emitted almost perpendicular to the surface, with the corresponding photon frequency approximately matching the mass of the...Go to contribution page
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Gareth Hughes (ETH Zurich)31/07/2015, 14:15Markarian 501 is a nearby (z=0.034) Very High Energy (>100GeV, VHE) emitting high-synchrotron-peaked BL Lac object. It is the third source discovered at VHE, by the Whipple Telescope in 1996, and it has been regularly observed since then. From 2008 onward, these observations have taken the form of organized multi-wavelength (MWL) campaigns where the source has been monitored for several...Go to contribution page
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Paolo Piattelli (INFN)31/07/2015, 14:18The recent discovery by the IceCube collaboration of a high-energy neutrino flux of extra-terrestrial origin has opened a new observational window on the Universe. However, unambiguous identification of the emitting neutrino sources will require next generation neutrino telescopes with full sky coverage. The KM3NeT Collaboration aims at building a research infrastructure in the depths of the...Go to contribution page
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Dr Holger Motz (Waseda University)31/07/2015, 14:30The Calorimetric Electron Telescope (CALET) will be launched to the ISS within this year and measure the energy and direction distribution of electron+positron cosmic rays well into the TeV range during a 5 year mission. With a 1:10$^5$ proton rejection rate and an energy resolution of 2%, it is capable of detecting even small features in the spectrum. Combining the measurement of the total...Go to contribution page
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Vitaly Choutko (Massachusetts Inst. of Technology (US))31/07/2015, 14:30A precision measurement of the proton flux in primary cosmic rays with rigidity 1 GV to 1.8 TV is presented based on 300 million events. The results show that proton flux is smooth and exhibits no sharp structures with rigidity. The detailed variation with rigidity of the flux spectral index is presented for the first time. The spectral index is progressively hardening at high rigidities.Go to contribution page
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John Belz (University of Utah)31/07/2015, 14:30We study the chemical composition of ultrahigh energy cosmic rays primarily using the Xmax technique. The reconstruction techniques use events either seen by two of the TA fluorescence detectors (stereo mode), or by one fluorescence detector, and one fluorescence detector and the TA surface detector (hybrid mode). Each technique has its own acceptance imprinted on the data. We compare the...Go to contribution page
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Emma de Ona Wilhelmi (CSIC-IEEC)31/07/2015, 14:30The last six years have witnessed major revisions of our knowledge about the Crab Pulsar, the central engine of the remnant of the supernova explosion that occurred in 1054 AD. The pulsed high-energy emission is believed to be due to synchrotron-curvature radiation in the pulsar magnetosphere, reaching a maximum energy of a few hundreds of GeV. However, new measurements obtained with the MAGIC...Go to contribution page
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Juergen Brunner (CPPM)31/07/2015, 14:36The atmospheric flux of neutrinos has traditionally been seen as a background to the detection of an astrophysical neutrino signal. In recent years however, it has been realised that in the few-GeV range, this flux holds the key to resolving a fundamental question of particle physics: that of the neutrino mass hierarchy, i.e. whether the mass eigenstate $\nu_3$ is heavier (normal hierarchy) or...Go to contribution page
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Ruben Lopez-Coto (Institut de Fisica d'Altes Energies - IFAE)31/07/2015, 14:45The pulsar wind nebula (PWN) 3C 58 has been proposed as a good candidate for detection at VHE (VHE; E>100 GeV) for many years. It is powered by one of the highest spin-down power pulsars known (5% of Crab pulsar) and it has been compared to the Crab Nebula due to its morphology. This object was previously observed by imaging atmospheric Cherenkov telescopes (Whipple, VERITAS and MAGIC), and...Go to contribution page
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Dr Alessio Porcelli (Universite de Geneve (CH))31/07/2015, 14:45For the first time the Pierre Auger Collaboration presents $\langle X_\mathrm{max}\rangle$ and $\sigma(X_\mathrm{max})$ measurements covering nearly three decades of energy. In this analysis we include new $X_\mathrm{max}$ data obtained with the Pierre Auger High Elevation Fluorescence Telescopes (HEAT) enhancement. The HEAT telescopes cover a field of view ranging from $30^\circ$ to...Go to contribution page
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Sadakazu Haino (Academia Sinica (TW))31/07/2015, 14:45A precision measurement of the Helium flux in primary cosmic rays with rigidity 2 GV to 3 TV is presented based on 50 million events. The detailed variation with rigidity of the spectral index is presented for the first time. The helium spectral index is progressively hardening at high rigidities. The precise ratio of the proton to Helium flux is also presented. Surprisingly, above ~25 GV...Go to contribution page
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Valentina Gallo (Universite de Geneve (CH))31/07/2015, 14:45The DAMPE (DArk Matter Particle Explorer) is one of the five satellite missions in the framework of the Strategic Pioneer Research Program in Space Science of the Chinese Academy of Science (CAS). DAMPE is a powerful space telescope for high energy gamma-rays, electrons and cosmic rays detection. The detector consists of a double layer of plastic scintillator strips detector (PSD) that...Go to contribution page
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Erik Blaufuss (University Of Maryland)31/07/2015, 14:54Given recent observations of an astrophysical flux of neutrinos by the IceCube neutrino observatory, the design of the next generation Antarctic neutrino observatory is well underway. The IceCube Gen2 high-energy array will instrument a $\sim10\,\mathrm{km}^3$ volume of clear glacial ice at the South Pole to deliver substantial increases in the observed astrophysical neutrino sample for all...Go to contribution page
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Dorit Glawion31/07/2015, 15:00The nearby active galaxy IC 310, located in the outskirts of the Perseus cluster of galaxies is a bright and variable multi-wavelength emitter from the radio regime up to very high gamma-ray energies above 100 GeV. Originally, the nucleus of IC 310 has been classified as a radio galaxy. However, studies of the multi-wavelength emission showed several properties similar to those of blazars as...Go to contribution page
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Mr David Michael Green (UMD/NASA)31/07/2015, 15:00The Pass 8 gamma-ray simulation and reconstruction package for the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope has dramatically enhanced the ability of the LAT to perform gamma-ray science. The Pass 8 improvements have also allowed for the development of a new cosmic-ray proton analysis. Using the new Pass 8 direction and energy reconstruction, we create a new proton...Go to contribution page
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Grigory Rubtsov (INR RAS)31/07/2015, 15:00We report on a search for ultra-high-energy photons with a multivariate analysis technique based on the properties of shower fronts of events observed by the Telescope Array surface detector. We present the point source photon flux upper limits for all directions in the Northern hemisphere. The revised constraints on the diffuse flux of the primary photons with energies greater than 10^19 eV...Go to contribution page
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Xin Wu (Universite de Geneve (CH))31/07/2015, 15:00DAMPE (DArk Matter Particle Explore) is a satellite mission of the Chinese Academy of Science dedicated to high energy particle detections in space. The main scientific objective of DAMPE is to detect electrons and photons in the range of 5 GeV-10 TeV with unprecedented energy resolution in order to identify possible Dark Matter signatures. It will also measure the flux of nuclei up to 100 TeV...Go to contribution page
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Prof. George Wei-Shu Hou (National Taiwan University)31/07/2015, 15:12By separating $\nu_{\tau}\to\tau$ conversion from $\tau$-shower generation, the Earth-skimming $\nu_{\tau}$ method allows for huge target mass and detection volume simultaneously. In part motivated by recent IceCube astrophysical PeV neutrino events, the planned NTA observatory will have three site stations watching the air mass surrounded by Mauna Loa, Mauna Kea, and Hualalai on...Go to contribution page
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Pierre Colin (MPI fuer Physik)31/07/2015, 15:15Galaxy clusters are the largest and most massive gravitationally bound structures known in the Universe. Cosmic-ray hadrons (CR) accelerated at structure formation shocks and injected by galaxies, are confined in galaxy clusters where they accumulate for cosmological times. The presence of diffuse synchrotron radio emission in several clusters proves the existence of high-energy electrons, and...Go to contribution page
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Bayarto Lubsandorzhiev (Institute for Nuclear Research of RAS)31/07/2015, 15:15We present results of extensive studies of CaMoO4 crystals for dark matter experiments. Light emission kinetics and absolute light yield of the crystals were measured thoroughly at room temperature. The temperature dependence of the crystals parameters were measured in the wide range of 1-300K. It is shown that CaMoO4 crystals are very interesting for dark matter experiments and for...Go to contribution page
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Sergey Koldobskiy (NRNU MEPhI)31/07/2015, 15:15The results of measurements of trapped and albedo cosmic ray deuteron fluxes obtained in the PAMELA experiment are presented in this work. The PAMELA is an international experiment aimed to measurements of cosmic ray particle fluxes in wide energy range. In particular, Analysis of PAMELA data gives possibility to identify deuterons and then to reconstruct deuteron spectra of different origin...Go to contribution page
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Stijn Buitink (Vrije Universiteit Brussel (VUB))31/07/2015, 15:15The LOFAR radio telescope measures the radio emission from air showers with unprecedented precision. In the dense core individual air showers are detected by hundreds of dipole antennas. The complicated radio pattern on the ground is accurately reproduced by modern radio simulation codes and contains information about the longitudinal shower development. With a hybrid reconstruction technique,...Go to contribution page
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Mirko Boezio (Universita e INFN, Trieste (IT))31/07/2015, 16:30The nine years of data taking in space of the experiment PAMELA are providing interesting information concerning the origin and propagation of both galactic and solar cosmic rays. The measured antiparticle component of the cosmic radiation shows features that can be interpreted in terms of dark matter annihilation or pulsar contribution. The precise measurements of the energy spectra...Go to contribution page
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Steven Barwick (University of California)31/07/2015, 17:00Evidence is growing for the existence of a diffuse flux of astrophysical neutrinos with energies up to a few x 10^15 eV. This has spurred considerable interest in developing new techniques that can extend the search to even higher neutrino energies. Promising new efforts over the past half-decade focus on the radio-Cherenkov technique in polar regions with cold, highly transparent ice. I...Go to contribution page
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Dr Marco Ajello (Clemson University)31/07/2015, 17:30The Fermi Large Area Telescope (LAT) has been routinely gathering science data since August 2008, surveying the full sky every three hours. The first Fermi-LAT catalog of sources detected above 10 GeV (1FHL) relied on three years of data to characterize the $>$10 GeV sky. The improved acceptance and point-spread function of the new Pass 8 event reconstruction and classification together with...Go to contribution page
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Thomas Hams31/07/2015, 18:00The Super Trans-Iron Galactic Element Recorder (SuperTIGER) long-duration balloon instrument and the Cosmic Ray Isotope Spectrometer (CRIS) on the NASA Advanced Composition Explorer (ACE) satellite have measured the abundances of galactic cosmic-ray elements from 10Ne to 40Zr with high statistics and single-element resolution. SuperTIGER launched from Williams Field, McMurdo Station,...Go to contribution page
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Michel Spiro (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))31/07/2015, 18:30
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Tim M.P. Tait (University of California, Irvine)01/08/2015, 09:00The identity of the dark matter is perhaps the most pressing question confronting particle physics, and is likely to transform our understanding of fundamental particles. A wide array of theoretical ideas exist, though there is currently little experimental guidance as to which are correct. I will review the current status of the leading candidates to play the role of the dark matter,...Go to contribution page
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Claudio Kopper (University of Alberta)01/08/2015, 09:45With the recent discovery of high-energy neutrinos of extra-terrestrial origin by the IceCube neutrino observatory, neutrino-astronomy is entering a new era. The highest energy neutrinos observed to date exceed 1 PeV in energy, a regime of particular interest because the neutrinos should point back to the still elusive accelerators of the highest energy Galactic and extragalactic cosmic rays....Go to contribution page
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Julian Sitarek (University of Łódź)01/08/2015, 11:00S3 0218+35 is a blazar located at a cosmological redshift of z=0.944. It is gravitationally lensed by a spiral galaxy at a redshift of z=0.68. The blazar and its lens are well studied in the radio through X-ray bands, and several blazar outbursts were detected by Fermi-LAT at energies above 100 MeV. Strong gravitational lensing was invoked to explain the two components apparent in the...Go to contribution page
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Carlo Romoli (DIAS)01/08/2015, 11:00An extended observation campaign of the gamma-ray binary system PSR B1259-63 has been conducted with the H.E.S.S.II 5-telescope system during the source’s periastron passage in 2014. Here we report on the outcome of this campaign, which consists of more than 85 h of observations covering both pre/post-periastron orbital phases and, for the first time, very-high-energy (VHE, E > 100 GeV)...Go to contribution page
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Dr Ivan Petukhov (Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS)01/08/2015, 11:00Acceleration of solar energetic particles by the shock accompanying a coronal mass ejection is considered. Influence of the region behind the shock front on particle acceleration process is investigated. The external boundary of coronal mass ejection and the shock front are specified as the segments of spherical surfaces with the different radii moving in coordination. Nonstationarity of...Go to contribution page
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Wolfgang Menn (University of Siegen)01/08/2015, 11:00On the 15th of June 2006, the PAMELA satellite-borne experiment was launched from the Baikonur cosmodrome and it has been collecting data since that time. The apparatus comprises a time-of-flight system, a magnetic spectrometer ( permanent magnet) with an silicon-microstrip tracking system, an imaging calorimeter built from layers of silicon -microstrip detectors interleaved with plates of...Go to contribution page
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Mr Sven Schoo (KIT)01/08/2015, 11:00The KASCADE experiment and its extension KASCADE-Grande have significantly contributed to the current knowledge about the energy spectrum and composition of cosmic rays (CRs) with energies between the knee and the ankle. However, the data of both experiments were analysed separately, although Grande used the muon information of the KASCADE-array. A coherent analysis based on the combined data...Go to contribution page
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Mr BALAKRISHNAN HARI HARAN (HECR Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India and GRAPES-3 Experiment, Cosmic Ray Laboratory, Ooty 643 001, India)01/08/2015, 11:15The GRAPES-3 experiment measures directional flux 1 GeV muons with very high precision. For a precise simulation of the measured flux of 1GeV muons in GRAPES-3, the energy spectrum of primary cosmic rays should be accurately known. We have used the data from several balloon and satellite based experiments to determine the proton and helium spectrum in the energy range from 10GV to 10TV. Since...Go to contribution page
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Christian Mariaud (LLR - Ecole Polytechnique)01/08/2015, 11:15LS 5039 is a gamma-ray binary system observed in a broad energy range, from radio to TeV energies, which exhibits both flux and spectral modulation folded on its orbital period of $\sim 3.9$~d. The X-ray and very-high-energy (VHE, E > 100 GeV) gamma-ray fluxes display a maximum/minimum at inferior/superior conjunction, with spectra becoming respectively harder/softer, a behavior which is...Go to contribution page
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Nicola Mori (INFN)01/08/2015, 11:15The PAMELA experiment is collecting particles along a low Earth semi-polar orbit on board of Resurs-DK 1 satellite since June 2006. The combined information of a silicon tracking system and a scintillator hodoscope provides redundant light-element identification capabilities, via multiple ionization energy-loss measurements. Results on the abundances of galactic secondary elements Li and Be...Go to contribution page
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Veronica Bindi (University of Hawai'i at Manoa (US))01/08/2015, 11:15The Alpha Magnetic Spectrometer (AMS-02) with its acceptance of about 0.45 m^2 sr, is the largest Solar Energetic Particle (SEP) detector in space. It was installed on the International Space Station (ISS) on May 19, 2011, where it will take data for the duration of the station (≈ 2024). In the first 3 years of operations, AMS-02 detected and measured the highest energy SEPs produced during M-...Go to contribution page
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Dr Eugenio Bottacini (Stanford University)01/08/2015, 11:15Results from surveys show that most galaxies underwent one or more eras of Active Galactic Nucleus (AGN) activity throughout their existence. During the AGN era the central region of the galaxy becomes very bright up to soft gamma-ray energies due to inverse-Comptonization by relativistic electrons. However, survey studies can not draw definite conclusions on what switches on the AGN activity...Go to contribution page
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Prof. Jing Huang (Institute of High Energy Physics, CAS), for the Tibet ASgamma Collaboration for the Tibet ASgamma Collaboration (Institute of High Energy Physics, CAS)01/08/2015, 11:30We have started a new hybrid air shower experiment in Yangbajing (4300m a.s.l.) in Tibet since February 2014. This new hybrid experiment consists of the YAC-II comprising of 124 core-detectors placed on a grid of about 500 m2, the Tibet-III AS array with the total area of about 50000 m2 and the underground MD array comprising of 5 clusters with 800 m2 each below underground 2.5m. This...Go to contribution page
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Laurent Yves Marie Derome (Centre National de la Recherche Scientifique (FR))01/08/2015, 11:30Lithium nuclei in cosmic rays are produced by the spallation of heavier cosmic rays on the interstellar medium. Thus, the abundance of Lithium constitutes a very sensitive observable for the modeling of cosmic rays propagation in the Galaxy. A precision measurement of the Lithium flux with rigidities from 2 GV to 3 TV by AMS, based on 1.6 million events, is presented for the first time. The...Go to contribution page
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Mr Claudio Corti (University of Hawai'i at Manoa (US))01/08/2015, 11:30Galactic Cosmic Rays (GCRs) entering the heliosphere are disturbed by the magnetic field of the Sun, which varies with a period of 11 years. The solar modulation affects the GCR fluxes up to few tens of GeV, modifying the shape and the intensity of the local interstellar spectrum (LIS). The time variation of the galactic cosmic protons at Earth can be studied indirectly on ground with the...Go to contribution page
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Matteo Cerruti (Harvard-Smithsonian Center for Astrophysics)01/08/2015, 11:30During May 2013, a gamma-ray flare from the BL Lac object 1ES 1727+502 (z=0.055) has been detected with the VERITAS Cherenkov telescopes. This detection represents the first evidence of very-high-energy (E>100 GeV) variability from this blazar and has been achieved using a reduced-high-voltage configuration which allows observations under bright moonlight. The integral flux is about five times...Go to contribution page
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Alba Fernandez-Barral (Institut de Fisica d'Altes Energies (IFAE))01/08/2015, 11:30Transient and variable stellar objects provide a proper environment for particle acceleration and radiation of GeV-TeV gamma-rays. MAGIC Collaboration has carried out deep observations of different transient and variable stellar objects. Here we highlight 5 of them: LS I +61 303, MWC 656, SS 433, Cygnus X-1 and SN 2014J. We present the results of those observations, including long-term...Go to contribution page
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Pol Bordas (Max-Planc-Institut fur Kernphysik)01/08/2015, 11:45SS433 features the most energetic jets known in our Galaxy. A large fraction of the jet kinetic power is delivered to the surrounding W50 nebula at the jet termination shock, from which high-energy emission and cosmic-ray production have been anticipated. Here we report on the possible detection of a persistent gamma-ray signal from a source located within the 99.9 % confidence level contours...Go to contribution page
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Michal Dyrda (Institute of Nuclear Physics PAS)01/08/2015, 11:45Most of the extragalactic objects detected so far in the very high energy (VHE) regime are blazars, but detected nearby radio galaxies: M87, Cen A and NGC 1275 of type FRI seem to constitute a new class of VHE emitters. The radio galaxy PKS 0625-354 was observed with the H.E.S.S. phase I telescopes in 2012, above the energy threshold of 250 GeV. The time-averaged TeV energy spectrum is well...Go to contribution page
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Dr Zhang Shoushan (Institute of High Energy Physics)01/08/2015, 11:45The measurement of cosmic ray energy spectra, in particular for individual species, is an essential approach in finding their origin. Locating the “knees” of the spectra is an important part of the approach and has yet to be achieved. Here we report a measurement of the mixed Hydrogen and Helium spectrum using the combination of the ARGO-YBJ experiment and of a prototype Cherenkov telescope...Go to contribution page
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Alberto Oliva (Centro de Investigaciones Energ. Medioambientales y Tecn. - (ES)01/08/2015, 11:45A precision measurement by the Alpha Magnetic Spectrometer of the Boron to Carbon fluxes ratio with energies from 0.5 GeV/nucleon to 1 TeV/nucleon based on 10 million events is presented. Precision measurement of the Boron flux, based on 2 million events, together with the variation of the flux spectral index with rigidity is also presented.Go to contribution page
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Dr Timo Laitinen (Jeremiah Horrocks Institute, University of Central Lancashire, Preston, UK)01/08/2015, 11:45Multi-spacecraft observations of Solar Energetic Particles (SEPs) show that SEPs related to a single solar eruption can be observed over a wide range of heliolongitudes. The SEP anisotropy observations suggest that interplanetary transport significantly contributes to this spreading of SEPs across the mean Parker Spiral field. However, the current transport models that describe the cross-field...Go to contribution page
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Dr Olaf Reimer (Innsbruck University)01/08/2015, 12:00Eta Carinae, the so-far only colliding wind binary detected at high-energy gamma-rays, has been observed over its first complete orbit since launch of the Fermi Gamma-ray Space Telescope. Different emission scenarios are proposed to explain the temporal and spectro-temporal features, by either postulating strong dominance of hadronic particle populations, a single emitting particle population...Go to contribution page
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Ivan De Mitri (Univ. of Salento and INFN, Lecce, Italy)01/08/2015, 12:00The CR spectrum has been studied by the ARGO-YBJ experiment in a wide energy range (TeVs→ PeVs) . This study is particularly interesting because not only it allows a better understanding of the so called ’knee’ of the energy spectrum and of its origin, but also provides a powerful cross-check among very different experimental techniques. The unique detector features (full coverage, time...Go to contribution page
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Karl-Ludwig Klein (Observatoire de Paris)01/08/2015, 12:00The highest energies of solar energetic nucleons detected in space or through gamma-ray emission in the solar atmosphere are in the GeV range. Where and how these particles are accelerated is still controversial. The candidate processes are related to magnetic reconnection in a flare or a coronal mass ejection (CME), and to the shock wave driven by a fast CME. We search for observational...Go to contribution page
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Melanie Heil (Massachusetts Inst. of Technology (US))01/08/2015, 12:00A precision measurement of the flux ratio of Carbon to Helium in primary cosmic rays with rigidities from 2 GV to 2 TV is presented. Precision measurement of the Carbon flux, based on 8 million events, together with the variation of the flux spectral index with rigidity is also presented.Go to contribution page
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Mr Thomas Armstrong (Department of Physics, University of Durham, South Road, Du rham, DH1 3LE, UK)01/08/2015, 12:00The 6-year *Fermi* data set contains some 8000 extragalactic events with E > 100GeV. To search fo the sources of these events, we applied a clustering algorithm (DBSCAN), using a search radius based on the *Fermi*-LAT point spread function, to events from > 10 degrees above and below the Galactic plane. This analysis revealed 49 significant clusters. Of these, 21 correspond to known Very High...Go to contribution page
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Floriana Zefi (LLR - Ecole Polytechnique)01/08/2015, 12:15We report on evidence of correlated gamma-ray variability from the BL Lac source B2 1215+30, detected by VERITAS (E > 100 GeV) and the Fermi Large Area Telescope (100 MeV < E <100 GeV). The source was observed by VERITAS during an exceptional flaring state in February 2014. Further investigations of flux variability in the energy range covered by Fermi-LAT, quasi-simultaneous with VERITAS...Go to contribution page
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Paolo Montini (INFN Roma Tor Vergata)01/08/2015, 12:15The measurement of the cosmic ray (CR) spectrum plays a fundamental role in the understanding of the production and acceleration mechanisms of high energy CR. Moreover the determination of the CR composition at energies > 100 TeV could provide a better understanding of the origin of the knee in the all-particle CR spectrum. The ARGO-YBJ experiment is a full coverage air shower detector...Go to contribution page
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Dr Yutaka Matsubara (Solar-Terrestrial Environment Laboratory, Nagoya University)01/08/2015, 12:15During the second period of maximum solar activity (October 2013 through October 2014) of the current solar cycle we have searched for solar neutron events. When a solar flare occurs, ions are sometimes accelerated. Those ions interact with the solar atmosphere and produce solar neutrons. We examined recent data from five stations of the International Network of Solar Neutron Telescopes...Go to contribution page
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Victor Zabalza (University of Leicester)01/08/2015, 12:15Eta Carina is the only colliding-wind binary for which non-thermal emission is detected from hard X-rays to high-energy gamma rays. Although the physical conditions in the shock region change on timescales of hours to days, the variability seen at GeV energies is quite weak and on significantly longer timescales. The gamma-ray spectrum exhibits two spectral features that can be...Go to contribution page
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Alan Cummings (California Institute of Technology)01/08/2015, 12:15Voyager 1 (V1) has been in the local interstellar medium (LISM) since August, 2012. We present the galactic cosmic-ray (GCR) energy spectra of most elements from H through Ni, and also of electrons, for a period exceeding two years. The V1 energy spectra define the newly-revealed, low-energy part of the interstellar spectra of nuclei down to $\sim$1 MeV/nuc and of electrons down to $\sim$8...Go to contribution page
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Hamish Silverwood (University of Amsterdam)01/08/2015, 14:00Determination of the Dark Matter density at the solar position is critical to direct dark matter searches. Additionally, it is important to make this determination with as few assumptions as possible, as results from direct detection searches are used to explore a wide variety of theoretical models, and hidden astrophysical assumptions could bias theoretical searches. Here we present a Jeans...Go to contribution page
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Jan Auffenberg (RWTH Aachen University)01/08/2015, 14:00IceCube is the world’s largest high-energy neutrino observatory, built at the geographic South Pole. For neutrino astronomy, a large background-free sample of well-reconstructed astrophysical neutrinos is essential. The main backgrounds for this signal are muons and neutrinos, which are produced in cosmic-ray air showers in the Earth’s atmosphere. The coincident detection of these air showers...Go to contribution page
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Prof. Martin Israel (Washington University in St Louis)01/08/2015, 14:00The Cosmic Ray Isotope Spectrometer (CRIS) on the ACE spacecraft has been measuring the isotopic composition of Galactic Cosmic Rays (GCRs) since October 1997. Using selected data from the past seventeen years, we have a set of 3.55 x 10^5 Fe nuclei in the energy interval ~240 to ~470 MeV/nucleon with excellent mass resolution characterized by sigma = 0.24 amu. In this data set we have...Go to contribution page
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David Staszak (McGill University)01/08/2015, 14:00VERITAS is a ground-based array of four 12-meter telescopes near Tucson, Arizona and is one of the world's most sensitive detectors of very high energy (VHE: >100 GeV) gamma rays. VERITAS has a wide scientific reach that includes the study of extragalactic and Galactic objects as well as the search for astrophysical signatures of dark matter and the measurement of cosmic rays. In this...Go to contribution page
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Dr Konstantin Belov (JPL, Caltech)01/08/2015, 14:00Radio detection is a technique of great interest for detecting ultra-high energy cosmic rays. Models of radio emission from extensive air showers, based solely on principles of classical electrodynamics, were developed in recent years. The SLAC T-510 experiment was conducted in January-February of 2014 using an electron beam to validate these models in a laboratory environment. Secondary...Go to contribution page
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Vincent Bonnivard (Centre National de la Recherche Scientifique (FR))01/08/2015, 14:15Self-annihilation or decay of dark matter (DM) particles could produce high-energy gamma-rays. Owing to their proximity, high DM content, and lack of astrophysical background, dwarf spheroidal galaxies (dSphs) of the Milky Way are among the best targets for current and future gamma-ray instruments. Putting constraints on the DM particle properties requires a precise knowledge of their...Go to contribution page
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Dr Frank G. Schröder (Karlsruhe Institute of Technology (KIT))01/08/2015, 14:15LOPES was a digital, phased antenna array located at the site of KASCADE-Grande in Karlsruhe, Germany. Triggered by the particle-detector array of KASCADE, LOPES measured the radio signal of air showers. By an interferometric, offline combination of the signals measured by different antennas, LOPES was able to enhance the signal-to-noise ratio. This lowered the detection threshold...Go to contribution page
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Dr M. Sasaki (NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA)01/08/2015, 14:15
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Bair Shaybonov (JINR)01/08/2015, 14:15Baikal-GVD is a future cubic-kilometer neutrino telescope in Lake Baikal which will be formed by multimegaton subarrays – clusters of strings. Construction of the first GVD-cluster has been started in 2012 by deployment of the first string. The five string array has been deployed in 2014. We review a present activity towards the first cluster implementation and describe some results obtained...Go to contribution page
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Dr Wystan Benbow (Smithsonian Astrophysical Observatory)01/08/2015, 14:20The VERITAS array of four 12-m imaging atmospheric-Cherenkov telescopes began full-scale operations in 2007, and is one of the world’s most sensitive detectors of astrophysical VHE (E>100 GeV) gamma rays. Observations of active galactic nuclei (AGN) are a major focus of the VERITAS Collaboration, and more than 50 active galactic nuclei (AGN), primarily blazars, are known to emit VHE...Go to contribution page
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Mr Ryan Murphy (Washington University in St. Louis, St. Louis, MO 63130, USA)01/08/2015, 14:30The SuperTIGER (Trans-Iron Galactic Element Recorder) experiment was launched on a long-duration balloon flight from Williams Field, Antarctica, on December 8, 2012. SuperTIGER flew for a total of 55 days at a mean atmospheric depth of 4.4 g/cm^2. The instrument measured the abundances of galactic cosmic rays in the charge (Z) range Z ≥ 10 with excellent charge resolution, displaying well...Go to contribution page
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Mattia Di Mauro (University of Turin and INFN Turin)01/08/2015, 14:30Electron and positron cosmic rays are one of the most powerful tool for astroparticle physics. The AMS-02 Collaboration has recently released the electron, positron inclusive and positron fraction spectra measured with an incredible precision. We performed a combined analysis of the recent AMS-02 data in a self-consistent framework where we theoretically model all the astrophysical...Go to contribution page
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Keiichi Mase (Chiba University)01/08/2015, 14:30Askaryan Radio Array (ARA) is being built at the South Pole aiming for observing high energy cosmogenic neutrinos above 10 PeV. The ARA detector identifies the radio emissions from the excess charge in a particle shower induced by a neutrino interaction. Such a radio emission was first predicted by Askaryan in 1962 and experimentally confirmed by Saltzberg et al. using the SLAC...Go to contribution page
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Isaac Myers (urn:Google)01/08/2015, 14:30TARA (Telescope Array Radar) is a cosmic ray radar detection experiment co-located with the Telescope Array conventional surface scintillation detector (SD) and fluorescence telescope detector (FD) near Delta, UT. The TARA detector combines a 40 kW transmitter and high gain transmitting antenna which broadcasts the radar carrier over the SD array and in the FD field of view to a 250 MS/s DAQ...Go to contribution page
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Brian Humensky (Columbia University)01/08/2015, 14:34The middle-aged supernova remnant IC 443 is interacting with molecular gas in its surroundings. Fermi-LAT has established that its gamma-ray emission at low energies shows the “pion bump” that is characteristic of hadronic emission. TeV emission was previously established by MAGIC and VERITAS at a site of interaction between the shock front and a molecular cloud. VERITAS has continued to...Go to contribution page
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Ke Fang01/08/2015, 14:45Observations by ARCADE-2 and other telescopes have reported an excess in the isotropic radio background. This excess has a hard spectral index and is found to significantly exceed the expected contribution from known astrophysical sources. Specifically, previous works have suggested that the ARCADE-2 signal is unusually smooth, compared to emission which traces large scale structure. In this...Go to contribution page
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Allan Labrador (California Institute of Technology)01/08/2015, 14:45SuperTIGER (Trans-Iron Galactic Element Recorder) is a large-area balloon-borne instrument built to measure the galactic cosmic-ray abundances of elements from Z=10 (Ne) through Z=56 (Ba) at energies from 0.8 to ~10 GeV/nuc. SuperTIGER successfully flew around Antarctica for a record-breaking 55 days, from December 8, 2012 to February 1, 2013. In this paper, we present results of an analysis...Go to contribution page
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Tim Huege (KIT)01/08/2015, 14:45As of 2020, the Square Kilometre Array will constitute the world's largest radio telescope, offering unprecedented capabilities for a diverse science programme in radio astronomy. At the same time, the SKA will be ideally suited to detect extensive air showers initiated by cosmic rays in the Earth's atmosphere via their pulsed radio emission. With its very dense and uniform antenna spacing on...Go to contribution page
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Andrew Romero-Wolf (Jet Propulsion Laboratory, California Institute of Techology)01/08/2015, 14:45In the past decade, searches for the cosmogenic neutrino flux produced by the interactions of ultra-high energy cosmic rays with the cosmic microwave background have not yet resulted in detection. Radio detection of ultra-high energy neutrinos provides a cost-effective means probing large amounts of effective volume. The Antarctic Impulsive Transient Antenna (ANITA) balloon-borne experiment,...Go to contribution page
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Anna O'Faolain de Bhroithe (DESY)01/08/2015, 14:48The very-high-energy (VHE; E > 100 GeV) gamma-ray observatory, VERITAS, detected exceptionally bright flares from the high mass X-ray binary LS I +61 303 during the period October - December 2014. LS I +61 303 is a known VHE gamma-ray source, the flux from which varies strongly with the orbital period of ~26.5 days. The maximum VHE flux is found around apastron (orbital phase ~0.6) at a level...Go to contribution page
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Alexander Panov (MSU, Skobelsyn Institute of Nuclear Physics)01/08/2015, 15:00One of the main results of the ATIC experiment is a collection of energy spectra of abundant cosmic ray nuclei – protons, He, C, O, Ne, Mg, Si, Fe measured in terms of the energy per particle in energy range from 50 GeV to tenths of TeV. In this report the ATIC energy spectra of abundant nuclei are back propagated to the spectra in sources in terms of magnetic rigidity using a number of...Go to contribution page
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Krijn de Vries01/08/2015, 15:00We discuss the feasibility of the radar detection technique as a method for detecting high-energy cosmic neutrinos. When a high-energy neutrino interacts in a dens medium such as ice or rock, a particle cascade will be induced. While traversing through, the cascade will ionize the medium. We discuss the radar detection technique as a probe for the detection of the induced ionization plasma....Go to contribution page
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Maxim Pshirkov (Moscow State University)01/08/2015, 15:00Dark matter could be captured by stars at any stage of their evolution. By considering adiabatic contraction of the dark matter (DM) during star formation, we estimate the amount of DM trapped in stars at their birth. We simulate the adiabatic contraction of a DM distribution during the process of the star formation, paying particular attention to the phase space distribution of the DM...Go to contribution page
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Clancy James (University of Erlangen-Nuernberg)01/08/2015, 15:00The lunar Askaryan technique is a method to study the highest-energy cosmic rays, and their predicted counterparts, the ultra-high-energy neutrinos. By observing the Moon with a radio telescope, and searching for the characteristic nanosecond-scale Askaryan pulses emitted when a high-energy particle interacts in the outer layers of the Moon, the visible lunar surface can be used as a detection...Go to contribution page
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Andrew Smith (UMD College Park / NASA GSFC)01/08/2015, 15:02The Galactic Center Ridge is perhaps the most local, busy environment for high energy particle acceleration; home to many relativistic particle accelerators such as pulsar wind nebulae, supernova remnants, and the central supermassive black hole SgrA*. Observations with VHE (>100 GeV) gamma-ray telescopes of the region have revealed multiple point sources associated with well known objects, as...Go to contribution page
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Mathieu Boudaud (LAPTh Annecy France)01/08/2015, 15:15
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Keith Bechtol01/08/2015, 15:15The detection of ultra-high energy neutrinos is an important step towards understanding the most energetic cosmic accelerators and would enable tests of fundamental physics at energy scales that cannot be easily achieved on the Earth. Radio detector arrays such as ANITA, ARA, and ARIANNA exploit the Askaryan effect and the radio-transparency of glacial ice, which together enable...Go to contribution page
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Daniel García Fernández (Universidade de Santiago de Compostela)01/08/2015, 15:15We present the calculation of coherent radio pulses emitted by extensive air showers induced by ultra-high energy cosmic rays accounting for reflection on the Earth's surface. Our work is motivated by the detection of pulsed events in the ANITA experiment compatible with cosmic-ray origin after reflection on the ice cap at the South Pole. The properties of the radiation are discussed...Go to contribution page
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Dmitry Podorozhny (MSU SINP)01/08/2015, 15:15The "knee" energy range 1015 - 1016 eV is a crucial region for the understanding of the Cosmic Rays (CR) origin, acceleration and propagation in our Galaxy. The NUCLEON satellite experiment is designed to investigate directly a cosmic ray nuclei energy spectrum and the chemical composition from 100 GeV to 1000 TeV and the atomic charge range up to Z~40 as well as a cosmic ray electron...Go to contribution page
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Mr Sajan Kumar (for the VERITAS collaboration)01/08/2015, 15:16Supernova remnants (SNRs) have long been considered the leading candidate sites for the acceleration of cosmic rays within the Galaxy through the process of diffusive shock acceleration. The connection between SNRs and cosmic rays is supported by the detection of high energy (HE; 100 MeV to 100 GeV) and very high energy (VHE; 100 GeV to 100 TeV) gamma rays from young and middle-aged SNRs....Go to contribution page
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Dr Federico Pilo (INFN)01/08/2015, 15:30The Extreme Energy Events (EEE) Project is an experiment for the detection of Extensive Atmospheric Showers of energy greater than $10^{11}$ eV. It consists of an array of telescopes hosted in High Schools spread on the Italian territory, each made of three Multigap Resistive Plate Chambers very similar to the ones built for the Time Of Flight system of the ALICE experiment at CERN. The...Go to contribution page
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Dr Maxim Shayduk (IRFU, Saclay)01/08/2015, 15:30One of the constrains for the instruments with large number of readout channels is the cost of a complex data acquisition (DAQ) system. We suggest here the novel approach - the Long Buffer ReadOut System (LiBROS). The LiBROS comprises the trigger, based on Field-Programmable-Gate-Array (FPGA) and the readout system based on Flash Analog-To-Digital Converters (FADCs). The readout channel...Go to contribution page
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Dr Maxim Shayduk (IRFU, Saclay)01/08/2015, 15:30The energy range >100 TeV is of central importance for high-energy astrophysics. PeV accelerators are expected to produce also copious photons of about a decade less in energy. Thus registering gamma-rays with energies above 100 TeV will pinpoint the galactic sources able to accelerate particles up to PeV energies (so-called PeVatrons). We suggest a concept of a novel wide-angle imaging...Go to contribution page
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Katherine Rawlins (University of Alaska Anchorage)01/08/2015, 15:30Snow overburden is a part of the IceTop detector at the South Pole, and becoming more significant over time as snowdrift buries the array. Snow attenuates the electromagnetic component of cosmic ray air showers before they reach the detectors, reducing the measured signals $S$, raising the threshold of the array in general, and introducing a potential source of systematic error in measuring...Go to contribution page
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Stefano Mastroianni (INFN, sec. Naples), michele iacovacci (INFN)01/08/2015, 15:30The determination of the primary cosmic ray all-particle spectrum with ground-based air shower experiments usually depends on the assumed elemental composition and hadronic interaction model. Here we show that an energy estimator independent of the primary mass composition can be defined by means of shower parameters measured in the core region , as carried out in the ARGO-YBJ experiment. An...Go to contribution page
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Alison Mitchell (Max-Planck-Institut für Kernphysik)01/08/2015, 15:30Muons produced in extensive air showers generate ring-like images in Imaging Atmospheric Cherenkov Telescopes when travelling near parallel to the optical axis. From geometrical parameters of these images, the absolute amount of light emitted may be calculated analytically. Comparing the amount of light recorded in these images to expectation is a well established technique for telescope...Go to contribution page
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Dr Robert Lauer (University of New Mexico)01/08/2015, 15:30The High Altitude Water Cherenkov (HAWC) Observatory continuously observes an instantaneous field of view of about 2 steradians above the array for gamma-rays between 100 GeV to 100 TeV. The large amount of raw data, the importance of small number statistics, the large dynamic range of gamma-ray signals in time (1 – 10^8 sec) and angular extent (0.1 – 100 degrees), and the growing need to...Go to contribution page
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Ilya Usoskin (University of Oulu)01/08/2015, 15:30A new cosmic ray detector has been installed in the inner Antarctic Plateau, at Concordia station ($75^\circ$06'S 123$^\circ$23'E, 3233 meters a.s.l.). The detector consists of two fully independent measuring units: FIN1 - a standard mini neutron monitor, and FIN2 - a bare (lead-free) neutron monitor. The detector was built by the North-West University (Potchefstroom, South Africa), are owned...Go to contribution page
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Mr Lionel Brayeur (Vrije Universiteit Brussel), Mr Martin Casier (Vrije Universiteit Brussel)01/08/2015, 15:30Abstract: The origin of the Ultra-High Energy Cosmic Rays (UHECRs) is still unknown. Gamma-Ray Bursts (GRBs) are generally presented as possible candidates to host progenitors producing such UHECRs. However, the exact physical processes underlying GRBs are yet not fully understood. If GRBs are (partly) responsible for the observed UHECRs, they have to contain a hadronic component, and...Go to contribution page
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Dr Laura Rossetto (Radboud University Nijmegen)01/08/2015, 15:30The LOw Frequency ARay (LOFAR) is a multipurpose radio antenna array aimed to detect radio signals in the frequency range 10$-$240 MHz, covering a large surface in Northern Europe with a higher density in Northern Netherlands. The detection of the radio signal emitted by cosmic ray induced air showers allows to reconstruct the geometry of the observed cascade. Thus, several properties of...Go to contribution page
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Andrea Chiavassa01/08/2015, 15:30The LHAASO experiment will operate in the Sichuan province (China) at high altitude ($4410$ $m$ $a.s.l.$) sampling the electromagnetic and muonic EAS components in a 1 $km^2$ surface with an unprecedented high ratio between the active and the effective area. The EAS electromagnetic component will be measured by 5635 1 $m^2$ plastic scintillator detectors and the muonic one by 1211 water...Go to contribution page
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Henrike Fleischhack (DESY)01/08/2015, 15:30The energy-dependent abundance of elements in cosmic rays plays an important role in understanding their acceleration and propagation. Most current results are obtained either from direct measurements by balloon- or satellite-borne detectors, or from indirect measurements by air shower detector arrays on the Earth's surface. Imaging Air Cherenkov Telescopes (IACTs), used primarily for...Go to contribution page
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Ruth Hoffmann (Bergische Uni Wuppertal)01/08/2015, 15:30Ultra high energy neutrinos may be observed in ice by the emission of acoustic signals. The SPATS detector has successfully shown that GZK-neutrinos can be observed in the clear ice at the South Pole at the IceCube detector site. To explore other potential detection sites glacial ice in the Alps and in Antarctica has been surveyed for its acoustical properties. The purpose of the Enceladus...Go to contribution page
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444. Aerosol in spring-summer-autumn-winter cycles by observation at Yakutsk EAS array in 2004-2013.Igor Petrov (Yu. G. Shafer Institute of Cosmophysical Research and Aeronomy)01/08/2015, 15:30Long-term set of data of aerosol composition and transparency of the atmosphere in the region of Yakutsk analyzed. Season variation of the characteristics are found in the annual cycle. Season variation taken into account in air shower analysis.Go to contribution page
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Prof. Vasily Prosin (Moscow State University, Skobeltsyn Institute of Nuclear Physics)01/08/2015, 15:30The first stage of the Tunka-HiSCORE prototype array operated in the Tunka Valley in March and April of 2014. It consisted of 9 optical stations with the total area of 0.3x0.3 km^2. Reconstruction methods of extensive air shower parameters are based on the experience of the Tunka-133 data processing. Primary energy spectrum in the energy range of 200 TeV – 30 PeV is obtained as the first...Go to contribution page
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Dr Gordana Tešić (Penn State)01/08/2015, 15:30The Astrophysical Multimessenger Observatory Network (AMON) will link the world's leading high-energy neutrino, cosmic-ray, gamma-ray and gravitational wave observatories by performing real-time coincidence searches for multimessenger sources from observatory subthreshold data streams. The resulting coincidences will be distributed to interested parties in the form of electronic alerts for...Go to contribution page
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Davide Badoni (INFN Sezione di Roma Tor Vergata)01/08/2015, 15:30An Electric Field Detector (EFD) for space applications has been designed and built in the framework of the CSES (China Seismo-Electromagnetic Satellite) mission. The instrument has been conceived for space-borne measurements of electromagnetic phenomena such as seimo-electromagnetic perturbations and more in general to investigate lithosphere-atmosphere-ionosphere EM coupling. The EFD ...Go to contribution page
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Segev BenZvi (University of Rochester)01/08/2015, 15:30The recent observation of PeV neutrinos at the IceCube Neutrino Observatory has revived interest in deploying large-exposure optical air shower detectors at the South Pole. The main challenge for such detectors, which were last deployed at the Pole in the 1990s, is the poor atmospheric conditions prevalent during austral winter. To investigate the clarity of the atmosphere we have studied...Go to contribution page
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M. Wiedenbeck (JPL/Caltech)01/08/2015, 15:30The Cosmic Ray Isotope Spectrometer (CRIS) on NASA's Advanced Composition Explorer (ACE) spacecraft has been making precise measurements of cosmic-ray elemental and isotopic composition and energy spectra for nearly 18 years. This instrument uses the dE/dx versus total energy technique to identify nuclei that stop in thick stacks of silicon solid-state detectors and to measure their energy....Go to contribution page
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Dr Susumu Inoue (Institute for Cosmic Ray Research, University of Tokyo)01/08/2015, 15:30The Cherenkov Telescope Array (CTA), the new generation very high-energy gamma-ray observatory, will improve on the flux sensitivity of the current Cherenkov telescopes by an order of magnitude over a continuous range from about 10 GeV to above 100 TeV. With tens of telescopes distributed in the North and South hemispheres, the large effective area and field of view coupled with the fast...Go to contribution page
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Dr Valery Sdobnov (Institute of Solar-Terrestrial physics of the Siberian Branch of the Russian Academy of Sciences)01/08/2015, 15:30We investigated the variations in the cosmic ray (CR) rigidity spectrum and anisotropy during the 2014 January 6 Ground Level Enhancement (GLE) from the ground-based observations of CRs at the global network of stations and with spacecraft by using the method of spectrographic global survey. Presented are the CR rigidity and variation spectra, as well as the relative variations in the 4-GV...Go to contribution page
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Mr Tim Holch (Humboldt University Berlin)01/08/2015, 15:30Data acquisition (DAQ) and control systems for arrays of Cherenkov telescopes comprise hundreds of distributed software processes that implement the readout, control and monitoring of various hardware devices. A multitude of different error conditions (malfunctioning detector hardware, crashing software, failures of network and computing equipment etc.) can occur and must be dealt with...Go to contribution page
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Dr Zbigniew Kobylinski (Polish Air Force Academy)01/08/2015, 15:30Many time series of neutron component data are collected in World Data Centers from the fifties of XX century to nowadays. It is very important to believe that those data are typified as stabilized and generally of good quality. In the paper the correctness of the pressure corrected data of individual neutron monitor (NM) stations is examined on the monthly to yearly time scale separately...Go to contribution page
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Ms Susanne Raab (ECAP, Universität Erlangen-Nürnberg)01/08/2015, 15:30Skymaps measured with Imaging Atmospheric Cherenkov Telescopes (IACT) represent the real source distribution convolved with the point spread function of the observing instrument. Current IACTs have an angular resolution in the order of 0.1 degree which is rather large for the study of morphological structures and for comparing the morphology in $\gamma$-rays to measurements in other...Go to contribution page
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Prof. Roger Clay (University of Adelaide)01/08/2015, 15:30The HEAMS muon detector is a sea-level spaced telescope consisting of four one square metre scintillators vertically above a second set of four. Coincidences taken with an FPGA data acquisition system can produce a number of directional beams with various useful energies in the range 50 GeV to 1 TeV. HEAMS is located at 35 degrees south and accesses an understudied declination/latitude...Go to contribution page
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lingling Ma (IHEP,CAS)01/08/2015, 15:30On the base of its high altitude and nearly full coverage, the ARGO-YBJ experiment could play an important role in understanding the energy scale. In this work the light component (proton + helium like) of cosmic rays can be selected from the shower lateral information. By combining the westward displacement of moon shadow position due to the effect of the geomagnetic field, we carefully...Go to contribution page
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Ivan De Mitri (Univ. of Salento and INFN, Lecce, Italy)01/08/2015, 15:30In a latest paper the ARGO-YBJ experiment proved the effect of the geomagnetic field (GeoMF) on the development of extensive air showers (EAS) and the dependence of the trigger rate ($\lambda$) on the coupling angle ($\xi$) between GeoMF and EAS axis, according to the formula $\lambda$ = $\lambda_0 (1-\eta \ sin^2 \xi)$. The value $\lambda_0$ depends on the EAS zenith angle, while the...Go to contribution page
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Michael Schimp (Rheinisch-Westfaelische Tech. Hoch. (DE))01/08/2015, 15:30IceCube, a cubic-kilometer sized neutrino detector at the geographical South Pole, has recently discovered a diffuse all-flavor flux of astrophysical neutrinos. However, the corresponding astrophysical sources have not been identified yet. We focus on the results of the angular correlation analysis (arXiv:1408.0634). This analysis is sensitive to clusters of muon neutrino arrival directions as...Go to contribution page
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G. Chiritoi (Institute of Space Science (Ro) for the JEM-EUSO Collaboration)01/08/2015, 15:30One of the major issues in the detection of the UV yield of orbital UV telescopes is the optical calibration of the focal surface detector, which in turn requires advanced knowledge of the atmosphere in the FoV of the telescope. As such, we report here on the evaluation of the GLS as a ground-based optical system for the in-orbit calibration of orbital instruments such as the Mini-EUSO,...Go to contribution page
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Takao Kuwabara (Chiba University)01/08/2015, 15:30Due to the large amount of flux, atmospheric neutrino is the main background for the IceCube neutrino telescope. Precise measurement of its spectrum allows us to reduce uncertainty of any kind of signal analysis. In this paper, we measure atmospheric muon and electron neutrino spectrum from first year of IceCube-86 detector. Track type events originate from muon neutrino and cascade type...Go to contribution page
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Lev Pustilnik (Israel Cosmic Ray Center, and Tel Aviv University)01/08/2015, 15:30Estimation of barometric coefficient for neutron component of cosmic rays was performed for Antarctic station Mirny and Mt. Hermon in Israel taking into account effect of dynamic pressure caused by wind in the atmosphere. Hourly data of continue monitoring of neutron component and data of the local meteo station have been used for the period 2007-2014. Wind velocity at the observatory Mirny...Go to contribution page
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Igor Moskalenko (Stanford University)01/08/2015, 15:30The fully Bayesian approach to the problem of deriving constraints for cosmic ray (CR) model parameters has several advantages. These are: (i) an efficient global scan of the whole parameter space allowing us to explore and take into account parameter correlations and degeneracies, (ii) a best-fit point and statistically well-defined errors on the parameters, (iii) the ability to include and...Go to contribution page
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Michael Daniel (University of Durham)01/08/2015, 15:30The construction of the Cherenkov Telescope Array (CTA), consisting of two observatories designed to observe the very high energy gamma-ray sky with unprecedented sensitivity and precision, will soon start. We will present the baseline methods and their extensions currently foreseen to achieve the strong requirements on allowed systematic uncertainties for the reconstructed gamma-ray energy...Go to contribution page
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Elisa Prandini (University of Geneva)01/08/2015, 15:30The SST-1M telescope is one of the prototypes under construction proposed to be part of the future Cherenkov Telescope Array. It uses a standard Davis-Cotton design for the optics and telescope structure, with a dish diameter of 4 meters and a large field-of-view of 9 deg. The innovative camera design is composed of a photo-detection plane with 1296 pixels including entrance window, light...Go to contribution page
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Dr Antonio Bonardi (Radboud University Nijmegen)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) is an international initiative to build the next generation ground based very-high energy gamma-ray observatory. It will consist of telescopes of three different sizes with several different technologies for the cameras that detect the Cherenkov light from the observed air showers. In order to ensure the compliance of each camera technology with CTA...Go to contribution page
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RAJESH KUMAR MISHRA (TROPICAL FOREST RESEARCH INSTITUTE)01/08/2015, 15:30Characteristic features of NM counts in relation to CMEs and Magnetic fields Rajesh K. Mishra 1 and Rekha Agarwal 2 1 Computer and Information Technology Section, Tropical Forest Research Institute, P.O.: RFRC, Mandla Road, Jabalpur (M.P.) India 482 021 2 Department of Physics, Govt. Model Science College (Autonomous), Jabalpur (M.P.) 482 001, India E-mail: rkm_30@yahoo.com,...Go to contribution page
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Teresa Montaruli (Universite de Geneve (CH))01/08/2015, 15:30The prototype camera of the single-mirror Small Size Telescopes (SST-1M) proposed for the Cherenkov Telescope Array (CTA) project was developed using large silicon photomultipliers (SiPM) coupled to hollow light concentrators. The camera is composed of a silicon photo-sensor plane designed at the University of Geneva, and a readout and trigger system (DigiCam) developed in Krakow. The full...Go to contribution page
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Dr Paolo Desiati (Wisconsin IceCube Particle Astrophysics Center, University of Wisconsin - Madison)01/08/2015, 15:30The IceCube Neutrino Observatory at the South Pole functions as a detector for high-energy atmospheric muons and neutrinos produced by cosmic ray interactions in the atmosphere. At the lowest energies, pion and kaon decays contribute the most to leptonic fluxes. Above a couple of hundred TeV, the prompt decay of charmed mesons becomes more important. The production processes of these prompt...Go to contribution page
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Giovanni Lamanna (Centre National de la Recherche Scientifique (FR))01/08/2015, 15:30Very High Energy gamma-ray astronomy with the Cherenkov Telescope Array (CTA) is evolving towards the model of a public observatory. Handling, processing and archiving the large amount of data generated by the CTA instruments and delivering scientific products are some of the challenges in designing the CTA Data Management. The participation of scientists from within CTA Consortium and from...Go to contribution page
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Mr Victor Kindin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))01/08/2015, 15:30Cherenkov water detector (CWD) with the volume of 2000 m3 (a pool with the dimensions of 26 m x 9 m x 9 m) is the basis of the NEVOD experimental complex which is designed for studying of various cosmic ray components, including muons generated by the neutrinos from the lower hemisphere. Inside the pool the detecting system in form of a spatial lattice of quasi-spherical modules (QSMs) is...Go to contribution page
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Dr Natalia Barbashina (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))01/08/2015, 15:30Study of temporal variations of the flux of cosmic rays on the Earth's surface provides important information about the processes in the heliosphere that cause these variations. These processes have the strong influence on the low-energy cosmic particles, so these studies are mainly carried out in a flux of neutrons detected by ground-based neutron monitors (NM). Studies of variations of...Go to contribution page
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Peter Velinov (STIL-BAS)01/08/2015, 15:30The galactic cosmic rays are the main source of ionization in the Earth stratosphere and troposphere. They play an important role in various processes related to atmospheric physics and chemistry. Sporadically solar energetic particles enhance the ion production rate, specifically over polar caps. At recent was observed an apparent effect on minor constituents and aerosols over polar region...Go to contribution page
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Peter Velinov (STIL-BAS)01/08/2015, 15:30At recent one of the modern topics in solar-terrestrial physics is the study of the possible effect of solar variability, respectively cosmic ray (CR) variations on atmospheric physics and chemistry. An important feature in most of the proposed mechanisms and models is the key role of the induced by cosmic rays ion production in the atmosphere. Since recently is observed an apparent effect on...Go to contribution page
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Dr Giovanni Lamanna (Centre National de la Recherche Scientifique (FR))01/08/2015, 15:30Rosette and Orion nebulae are two young massive star clusters in which no supernova explosion has occurred yet. That makes two very good candidates to study particle acceleration in a super bubble induces by the collective effects of stellar winds. Using data from Fermi-LAT and a phenomenological model, upper limits on the fraction of mechanical energy converted into accelerated particles have...Go to contribution page
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Mr Andriy Petrashyk (Columbia University)01/08/2015, 15:30We present the final optical system design of the prototype Schwarzschild-Couder telescope (pSCT), for which construction is scheduled to begin in early fall at the Fred Lawrence Whipple Observatory in southern Arizona, USA. The Schwarzschild-Couder telescope is a candidate for a future extension of the Cherenkov Telescope Array. This novel aplanatic optical system design is made of two...Go to contribution page
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Emmanuel Moulin (CEA)01/08/2015, 15:30The NectarCAM is a camera proposed for the Medium-Size-Telescopes (MSTs) in the framework of the Cherenkov Telescope Arrray (CTA), the next-generation observatory for high-energy gamma-ray astronomy. The cameras are designed to operate in an open environment and their mechanics must provide protection for all their components under the conditions defined for the CTA observatory. In order to...Go to contribution page
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Mr arvind dubey (rani durgawati university jabalpur india)01/08/2015, 15:30The Characteristics of the daily variation of cosmic ray intensity on different types of Anomalous days has been studied by using data of Neutron Monitors. It is observed that Cosmic ray intensity remains statistically low during the period of 1996-1998 on both Beijing and Moscow Neutron monitor station.These data is subjected to Harmonic Analysis Fourier techniques for an tire period of...Go to contribution page
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Atsushi Iyono (Okayama University of Science)01/08/2015, 15:30In Large Area Air Shower experiments, one of EAS arrays is deployed on the second floor of four stories building in the campus of Okayama University of Science to limit the zenith angle acceptance of muon detection. This system provide EAS muon intensities from zenith solid angles. To compare these intensities with solar activities such as flares, CME and magnetic-storms, LAAS data have been...Go to contribution page
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Dr Vladimir Makhmutov (Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia)01/08/2015, 15:30We summarize the results of analysis of cosmic ray (CR) measurements in the Earth’s atmosphere at several latitudes on October 20 and 24, 2014. The cosmic ray fluxes in the atmosphere were recorded during balloon flight in Zaragoza (Spain; 41°39′N, 0°54′W) by two detectors constructed at the Reading University, UK and at the Lebedev Physical Institute, Russia. We compare these data with...Go to contribution page
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Tijana Prodanovic (University of Novi Sad)01/08/2015, 15:30It is known that close galactic fly-bys and interactions give rise to shock waves that disrupt the interstellar medium of galaxies and impact their morphologies. These large-scale shocks that form in the interstellar medium of interacting systems will be the sites of particle acceleration giving rise to a population of tidal cosmic rays, in addition to standard galactic cosmic rays present in...Go to contribution page
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Mr Saša Banjac (CAU Kiel)01/08/2015, 15:30MuSTAnG - the Muon Spaceweather Telescope for Anisotropies at Greifswald - detects muons using 32 scintillator detectors with an area of 0.25m^2 each. These are organized into two 4x4 stacks. MuSTAnG was designed to investigate anisotropy changes of galactic cosmic ray intensities caused by the interplanetary counterpart of Coronal Mass Ejections. In August 2014 MuSTAnG has been transported...Go to contribution page
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Konstancja Satalecka (Universidad Complutense de Madrid, Spain)01/08/2015, 15:30The planned Cherenkov Telescope Array (CTA), a future ground-based Very-High-Energy (VHE) gamma-ray observatory, will be the largest Cherenkov project of its kind. It aims to provide an order of magnitude increase in sensitivity compared to currently operating VHE experiments and open access to guest observers. These features, together with the thirty years lifetime planned for the...Go to contribution page
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David Fidalgo (UCM, Madrid, Spain)01/08/2015, 15:30MAGIC is a system of two imaging atmospheric Cherenkov telescopes located on the Canary Island of La Palma. The fast processing of the data at the observation site plays an essential part in the operation of the telescopes and has continuously improved since the beginning of the experiment. The on-site computing can be divided into three major contributions: the MAGIC online analysis (MOLA),...Go to contribution page
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Ilya Usoskin (University of Oulu)01/08/2015, 15:30Solar proton events (SPE) occur as a result of massive acceleration of charged particles in the solar corona and/or interplanetary space. Usually such events provide quite a soft spectrum of energetic particles, but sometimes the spectrum can appear hard with energy of solar protons being sufficient to be detected on ground. Such exceptional events are called GLE (ground-level enhancements)...Go to contribution page
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Johannes Schumacher (RWTH Aachen University)01/08/2015, 15:30Silicon photomultipliers (SiPMs) have replaced traditional photomultiplier tubes bit by bit in high-energy physics experiments in the last years. This includes the scientific fields where the demand for highly efficient and stable photo sensors outweigh the need for large active areas. Silicon photomultipliers offer high photon detection efficiencies, low supply voltages and stable operation...Go to contribution page
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Igor Petrov (Yu. G. Shafer Institute of Cosmophysical Research and Aeronomy)01/08/2015, 15:30Radio emission at Yakutsk Array registers at frequency 32 MHz and radio antennas co-located with scintillation and Cherenkov detectors of Yakutsk Array. The co-location with particle detectors brings as a profit the reconstruction of fundamental air shower parameters, such as shower axis, energy and arrival direction (azimuthal and zenith angles). The paper presents data obtained in the new...Go to contribution page
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Dr Jason Link (NASA GSFC/CRESST(USRA))01/08/2015, 15:30Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) is a new instrument developed to measure the composition and spectrum of cosmic-ray particles up to close to the knee of the cosmic-ray energy spectrum 10^12 – 10^15 eV. The instrument utilizes two modified detectors from the highly successful CREAM balloon instrument, a sampling calorimeter and silicon charge...Go to contribution page
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Dr Fulvio De Persio (INFN Roma 1)01/08/2015, 15:30
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Mr Di Yang (University of Science and Technology of China)01/08/2015, 15:30A prototype energy spectrometer is being developed for space missions aiming at observing solar wind plasma activity. This detector mainly consists of three sections: entrance section, particle detection section and readout electronics. The entrance section is implemented by a symmetrical quadrispherical Electrostatic analyzer (ESA) with top hat, which selects incident particles with their...Go to contribution page
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Dr Jan Auffenberg (RWTH Aachen University), Mr Johannes Schumacher (RWTH Aachen University)01/08/2015, 15:30Air-Cherenkov Telescopes with SIPM based cameras have the potential to detect cosmic rays with a high duty cycle and efficiency in harsh environments. For IceCube, the world's largest high-energy neutrino observatory presents unique opportunities to detect cosmic-ray air showers in coincidence with the deep-ice detector and an extended air-Cherenkov telescope array. For neutrino astronomy,...Go to contribution page
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Dr Jik Lee (Sungkyunkwan Univeristy)01/08/2015, 15:30The ISS-CREAM experiment is a space-borne mission designed for the precision measurement of energy and elemental composition of cosmic rays. It will be launched to the International Space Station. The Silicon Charge Detector (SCD) is an instrument equipped with four layers of high-precision silicon pad sensors and readout electronics arranged in such a manner that it is free of dead area....Go to contribution page
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Prof. Justin Vandenbroucke (University of Wisconsin)01/08/2015, 15:30In 2014 the number of active cell phones worldwide for the first time surpassed the number of humans. Cell phone camera quality and onboard processing power (both CPU and GPU) continue to improve rapidly. In addition to their primary purpose of detecting photons, camera image sensors on cell phones and other ubiquitous devices such as tablets, laptops and digital cameras can detect ionizing...Go to contribution page
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Dr Dariusz Gora (Humboldt University)01/08/2015, 15:30This paper investigates the potential to detect tau neutrinos in the energy range of 1-1000 PeV searching for very inclined showers with imaging Cherenkov telescopes. A neutrino induced tau lepton escaping from the Earth may decay and initiate an air shower which can be detected by a fluorescence or Cherenkov telescope. We present here a study of the detection potential of Earth-skimming...Go to contribution page
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Michael DuVernois (University of Wisconsin)01/08/2015, 15:30The High-Altitude Water Cherenkov (HAWC) observatory in central Mexico is currently the world's only synoptic survey instrument for gamma rays above 1 TeV. Because there is significant interest in covering the full TeV sky with a survey instrument, we have examined options for a Southern Hemisphere extension to HAWC. In addition to providing all-sky coverage of TeV sources, a southern site...Go to contribution page
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Yusaku Katayose (Yokohama National University (JP))01/08/2015, 15:30To measure the cosmic-ray composition at the knee energy region, Yangbajing Air shower Core (YAC) -III experiment is planned in Tibet, China. We developed a front-end electronics to read out charge signal from YAC detectors. The readout system consists of a charge-to-time converter circuit and a time-to-digital converter circuit. The system has a linearity from less than 1 pC to more...Go to contribution page
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Marcos Alfonso Anzorena Méndez (Instituto de Geofísica, Universidad Nacional Autónoma de México)01/08/2015, 15:30The SciCRT (SciBar Cosmic Ray Telescope) is a new cosmic-ray experiment, an improved solar neutron telescope and muon detector, composed of 14 848 scintillator bars arranged to track and record energy of incident particles. The detector was installed at the top of Sierra Negra volcano in Mexico (4600 m above sea level) and 5/8 of the full SciCRT has been in operation since March 2014. To...Go to contribution page
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Dr Sergey Sharakin (SINP MSU)01/08/2015, 15:30KLYPVE is an orbital detector of ultra high energy cosmic rays to be deployed on the Russian Segment of the International Space Station. An important part of the detector, which determines its physical parameters (energy threshold, field of view) is an optical system. For the project, a two-component system composed from a large area mirror-concentrator and a correcting Fresnel lens was...Go to contribution page
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Gwenael Giacinti (University of Oxford, Clarendon Laboratory)01/08/2015, 15:30We have shown that the cosmic ray (CR) knee can be entirely explained by energy-dependent CR leakage from the Milky Way, with an excellent fit to all existing data ("escape model"), see Contribution 122, CR-TH, from D. SEMIKOZ. In the present work, we have applied our escape model to other normal galaxies. We have also calculated the CR flux expected to leak from starburst galaxies. From...Go to contribution page
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Mr Mohammad Hussein (University of Manitoba)01/08/2015, 15:30A fundamental problem in Space Science and Astrophysics is the interaction between energetic particles and a turbulent plasma. We have developed a test-particle code to simulate the interaction of charged particles with turbulent magnetic fields. Diffusion coefficients along and across the mean magnetic field are calculated and compared to different analytical theories. Different...Go to contribution page
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M. Ostrowski (Astronomical Observatory, Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland)01/08/2015, 15:30The SST-1M is one of three prototype small-sized telescope designs proposed for the Cherenkov Telescope Array, and is built by a consortium of Polish and Swiss institutions. The SST-1M will operate with DigiCam - an innovative, compact camera with fully digital read-out and trigger electronics. A high level of integration will be achieved by massively deploying state-of-the-art multigigabit...Go to contribution page
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Mr Petr Gololobov (ShICRA of SB RAS)01/08/2015, 15:30We present the results of studies of zonal harmonics of the cosmic ray distribution during geomagnetic storms. Zonal harmonics have been determined using a global survey method as a variant of spherical analysis of the world neutron monitor network data. We have analyzed 56 major geomagnetic storms observed in 1997 - 2005. It is shown that a sharp increase (> 0.7%) of zonal component amplitude...Go to contribution page
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Prof. Ivan De Mitri (Univ. of Salento and INFN, Lecce, Italy)01/08/2015, 15:30The ARGO-YBJ experiment, a full coverage extensive air shower (EAS) detector located at high altitude (4300 m a.s.l.) in Tibet-China, has been operated with very high stability from the fall 2007 to the beginning of 2013. The array consisted of a carpet of about 7000 m$^2$ Resistive Plate Chambers (RPCs) operated in streamer mode and equipped with both digital and analog readout, providing the...Go to contribution page
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lingling Ma (IHEP,CAS)01/08/2015, 15:30The measurement of the lateral distribution of extensive air showers by the ARGO-YBJ experiment is presented. The ARGO-YBJ experiment has two kinds of readout: a digital readout for small particle densities (<23 strips/m2) and an analog readout for large particle densities (up to 10^4/m2). For lateral distribution studies, the inner core region is measured by the analog readout, while farther...Go to contribution page
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Valentina Antonova (National Center for Space Research and Technology)01/08/2015, 15:30Results of the study of data of the detection of high-energy and thermal neutrons on Tien-Shan experimental complex at different stages of thunderstorm activity are presented. We found that the standard deviation of minute values of the neutron monitor data during thunderstorms always exceeds values under fair weather conditions. We selected events during the passage of thunderstorm clouds...Go to contribution page
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Dr T.C. Liu (LeCosPA and Department of Physics, National Taiwan university)01/08/2015, 15:30Extremely high energy neutrinos are attenuated by the materials surrounding the neutrino detector. Topography data can provides spatial distribution of material and become an essential factor in high energy neutrino experiment, especially for the earth skimming neutrino experiment. This study introduced the Antarctica topography data, including composite layers of rock, ice, and water, to...Go to contribution page
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Dr Xunxiu Zhou (School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China)01/08/2015, 15:30It has been found that most of the near earth thunderstorms electric field strength at YBJ (4300 m a.s.l., Tibet, China) is within the range of 1000V/cm from ARGO-YBJ data. In this work, Monte Carlo simulations were performed by CORSIKA to study the intensity change of the ground cosmic rays in near earth thunderstorms electric fields. We found that the number of electrons in secondary...Go to contribution page
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Alexandru Gherghel-Lascu (IFIN-HH Bucharest)01/08/2015, 15:30In previous studies based on CORSIKA EAS simulations with the QGSJet-II-02 hadronic interaction model, the observables S(200) and S(500) (the charged particle densities at 200m and 500m from the shower axis) were found to be good candidates for mass discrimination and energy estimation. In order to study the effects of new hadronic interaction models on the reconstruction of EAS from the...Go to contribution page
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Prof. Huanyu Jia (School of Physical Science and Technology, Southwest Jiaotong University)01/08/2015, 15:30Studies on energy changes of cosmic ray electron in thunderstorms electric field are very important to understand the acceleration mechanism of secondary charged particles caused by electric field. In this paper, Monte Carlo simulations were performed by CORSIKA to study the energy of cosmic ray electron in two typical electric fields. One is upper than the threshold field strength resulting...Go to contribution page
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Oleg Shchegolev (Institute for Nuclear Research, Russia, Moscow)01/08/2015, 15:30PRISMA-YBJ is a novel type array to study Extensive Air Showers (EAS) in the range of 10^14-10^16 eV. The main feature of this type array is the simultaneous measurement of the electron and the neutron components of EAS on all area of array with the same scintillator detectors (en-detectors). This allows detailed studies of low-investigated hadronic component in the "knee" region. The...Go to contribution page
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Kazumasa Kawata (ICRR, University of Tokyo)01/08/2015, 15:30More than 100 gamma-ray sources have been detected by the Cherenkov telescopes in the energies from sub-TeV to multi-TeV. On the other hand, the extensive air shower (EAS) arrays, such as the Tibet air shower array, the ARGO-YBJ and the Milagro, have observed several gamma-ray sources with the wide field of view and higher energy threshold than the Cherenkov telescopes. Aiming at 100 TeV...Go to contribution page
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Rocío García Gínez (Instituto de Geofísica, Universidad Nacional Autónoma de México)01/08/2015, 15:30The operating principles of Neutron Monitors are nuclear reactions within the proportional counters. The output signal of these is an electric pulse for every secondary cosmic ray particle that interacts with the detector. Then, the amplitude of the pulse signal reflects the amount of charge generated on each individual interaction. The estimated pulse height distribution provides an energy...Go to contribution page
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Dr Alexander Borisov (P.N.Lebedev Physical Institute of RAS, Moscow, Russia)01/08/2015, 15:30One-year exposition data on absorption of high-energy cosmic ray hadrons with energies of tens of TeV in two-tier X-ray emulsion chamber (XREC) with large air gap ($\sim$ 2.2 m) are presented. The experiment was carried out at the Tien Shan High Mountain Research Station located at the altitude of 3340 m a.s.l. It is shown that the abnormal behavior of the hadron absorption curve, which was...Go to contribution page
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Prof. Lev Dorman (Tel Aviv University (Israel) and IZMIRAN (Russia))01/08/2015, 15:30L.I. Dorman1,2, P.Paschalis3, C. Plainaki4, H. Mavromichalaki3 1Israel Cosmic Ray & Space Weather Centre and Emilio Ségre Observatory, Tel Aviv University, Israel 2IZMIRAN, Moscow, Russia 3 Nuclear and Particle Physics Department, Physics Faculty, National and Kapodistrian University of Athens, 15784 Athens, Greece 4INAF, Institute of Space Astrophysics and Planetology, Via del Fosso...Go to contribution page
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Prof. Shuwang Cui (Hebei Normal University, China)01/08/2015, 15:30The Large High Altitude Air Shower Observatory (LHAASO) project is a new generation instrument, which will be built at 4400m above sea level in Daocheng, Sichuan province, China. With a sensitivity of 10 mili-Crab, LHAASO will survey the northern sky in the declination band from -10° to 70° with a 100% duty cycle. With the wide field-of-view, LHAASO can observe not only the γ-ray point...Go to contribution page
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Mrs Saba Mortazavi Moghaddam (Semnan University)01/08/2015, 15:30The first phase of the Alborz Observatory Array (Alborz-I) is designed to have 20 scintillation detectors to study the cosmic ray spectrum in the energy range of $10^{12}$ eV to $10^{16}$ eV. In order to collect data under stable environmental conditions, a sub-array consists of 5 plastic scintillation detectors on a pentagon with side of 5 m similar to the central cluster of the Alborz-I have...Go to contribution page
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Peter Eger (MPIK Heidelberg)01/08/2015, 15:30The unidentified very high energy (VHE, E > 100 GeV) gamma-ray source HESS J1507-622 seems to not fit into standard models for sources related to young supernova remnants, pulsar wind nebulae, or young stellar populations in general. This is due to its intrinsically extended, but yet compact morphology, coupled with a relative large offset (3.5 deg) from the Galactic plane. Therefore, it has...Go to contribution page
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Mr Fabian Temme (TU Dortmund)01/08/2015, 15:30The First G-APD Cherenkov Telescope (FACT) is an Imaging Air Cherenkov Telescope located on the Canary Island of La Palma. It is the first of its kind which uses Geigermode-Avalanche Photo Diodes (G-APDs) as photosensors to detect the Cherenkov radiation emitted from secondary particles in a high-energy gamma-ray air shower. A new analysis chain was developed using modern data mining methods...Go to contribution page
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Fabian Temme (TU Dortmund)01/08/2015, 15:30The First G-APD Cherenkov Telescope (FACT) is an Imaging Air Cherenkov Telescope (IACT) located on the Canary Island of La Palma. Its target is to provide long term monitoring of stellar objects like Active Galactic Nuclei. FACT is the first IACT to use Silicon Photomultipliers instead of conventional PMTs. Therefore studying the detector properties is especially important. An event...Go to contribution page
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Dr Nicola Mori (University of Florence and INFN Florence)01/08/2015, 15:30Muon radiography is a well-estabilished technique which is widely used in investigating the internal density structure of targets of different size and composition. Some examples of successful applications are the search for hidden chambers in archaeological sites and the monitoring of geological structures like volcanoes. The two main approaches to muon radiography are based on the effects of...Go to contribution page
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Dr Marek Siluszyk (Siedlce University)01/08/2015, 15:30Data of super neutron monitors, Bx, By, Bz components of the Interplanetary Magnetic Field (IMF) have been used to study relations of the long-period variations of the Galactic Cosmic Rays (GCRs) intensity with IMF turbulence for the period of 1968-2014. We find that the changes of the rigidity spectrum exponent γ of the GCR intensity variations and the exponents vy, νz, νx of the Power...Go to contribution page
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Dr Anthony Brown (Durham University)01/08/2015, 15:30A small subset of IceCube's extraterrestrial neutrino candidates are detected as track events. The track-like nature of these events within the IceCube detector affords us a ~1 degree angular resolution for the neutrino's origin. This neutrino angular resolution is comparable to the angular resolution of the Fermi Large Area Telescope (LAT) for ~1 GeV photons. Utilising a deep LAT exposure and...Go to contribution page
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Dr Riccardo Rando (University of Padova & INFN Padova, Italy)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) is a future ground-based gamma-ray astronomy detector that will consist of several tens of Imaging Atmospheric Cherenkov Telescopes of different sizes. The total reflective surface of roughly 10,000 m^2 requires unprecedented technological efforts towards a cost-efficient production of light-weight and reliable mirror substrates at high production rate....Go to contribution page
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Dr Anthony Brown (Durham University)01/08/2015, 15:30The GCT is a dual-mirror Small-Sized-Telescope (SST-2M) prototype proposed for the Cherenkov Telescope Array (CTA). Calibration of the GCT's camera is primarily achieved with LED-based flasher units capable of producing ~4 ns (FWHM) pulses of 400 nm light across a large dynamic range, from 0.1 up to 1000 pe. The flasher units are housed in the four corners of the camera's focal plane and...Go to contribution page
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Prof. Jose Valdes-Galicia (UNAM)01/08/2015, 15:30We studied cosmic ray intensity variations in the daily data of the database of the Mexico City neutron monitor station during the period 1990 to 2014 using wavelet transforms to determine the power density function and its time evolution, with which we have identified the mid- and long-term variations present in the registers. We give the corresponding confidence levels for the periodicities...Go to contribution page
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Pablo Fernández (UAM)01/08/2015, 15:30The GADZOOKS! project is the proposed upgrade of the Super-Kamiokande (SK) detector in order to enable it to efficiently detect thermal neutrons. Inverse beta decay reactions, as well as charged current quasi-elastic (CCQE) scattering of low energy anti-neutrinos (up to a few hundreds of MeV) in SK, produce one positron and one neutron in the final state. The neutron thermalizes and is...Go to contribution page
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Andrii Neronov (University of Geneva)01/08/2015, 15:30Neutrino telescope IceCube has recently discovered astrophysical neutrinos with energies in the TeV-PeV range. We use the data of Fermi gamma-ray telescope to demonstrate that the neutrino signal has significant contribution from the Milky Way galaxy. Matching the gamma-ray and neutrino spectra we find that TeV-PeV Galactic cosmic rays form a powerlaw spectrum with the slope $p\simeq 2.5$....Go to contribution page
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Olaf Reimer01/08/2015, 15:30We present results obtained from our newly developed Galactic cosmic ray transport code Picard, that solves the cosmic ray transport equation. This code allows for the computation of cosmic ray spectra and the resulting gamma-ray emission. Relying on contemporary numerical solvers allows for efficient computation of deca-parsec scale resolution models. Picard can handle locally...Go to contribution page
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Zigfried Hampel-Arias (UW Madison)01/08/2015, 15:30The High-Altitude Water Cherenkov (HAWC) Observatory is a ground based air shower array deployed on the slopes of Volcan Sierra Negra in the state of Puebla, Mexico. While HAWC is optimized for the detection of gamma-ray induced air showers, the background flux of hadronic cosmic-rays is 4 orders of magnitude greater, making background rejection paramount for gamma-ray observations. On...Go to contribution page
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Dr Christophe Hugon (INFN)01/08/2015, 15:30Neutrinos have a very important role in the multi-messenger astronomy, therefore, in recent years, larges underwater and under-ice neutrinos telescopes have been designed to allow the detection of high energy neutrinos. The neutrino energy spectrum and direction are inferred based on the detection of the Cherenkov light induced by the secondary charged particles in the medium. Optical modules...Go to contribution page
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Moritz Hütten (DESY Zeuthen)01/08/2015, 15:30The questions about the origin and type of cosmic particles are not only fascinating for scientists in astrophysics, but also for young enthusiastic high school students. To make them familiar with research in astroparticle physics, the Pierre Auger Collaboration agreed to make 1% of its data public available. The Pierre Auger Observatory investigates the cosmic rays at the highest energies...Go to contribution page
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Behrouz Khiali (University of São Paulo)01/08/2015, 15:30Detection of astrophysical high energy (HE) neutrinos in the range of TeV- PeV energies by IceCube observatory has opened new era in high energy astrophysics. Neutrinos with energies ~ PeV imply that they are originated from a source where cosmic rays (CRs) can be accelerated up to ~1017eV. Recently it has been shown that the observed TeV gamma-rays from radio galaxies may have a hadronic...Go to contribution page
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Delia Tosi (WIPAC / UW Madison), Kyle Jero (WIPAC / UW Madison)01/08/2015, 15:30The IceCube neutrino observatory includes a surface array, IceTop, designed to detect and study cosmic rays. This array, located directly above IceCube, can be used to distinguish astrophysical neutrinos from atmospheric neutrinos and penetrating muons, increasing the effective volume of the IceCube detector for the southern sky. In this contribution we present the efficiency of such a veto...Go to contribution page
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Douglas Bergman (University of Utah)01/08/2015, 15:30Air showers with primary energies between 3 and 100 PeV which are pointed toward TALE give rise to an optical signal dominated by Cherenkov radiation rather than fluorescence light. The reconstruction of these showers can be greatly improved for a sample of these showers by placing a small (400 m square) array of non-imaging Cherenkov counters (25 counters) below the field of view of TALE....Go to contribution page
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Marcel Zoll (Stockholm Universitet)01/08/2015, 15:30Gravitationally captured Dark Matter in the form of Weakly Interacting Massive Particles (WIMPs) can annihilate into standard-model particles, such as neutrinos. The IceCube neutrino detector at the South Pole is an excellent instrument to search for such a neutrino signal from the Sun. We present an alternative analysis approach which improves on previous ones, in background-dominated regions...Go to contribution page
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Dr Mauricio Bustamante (Center for Cosmology and Astroparticle Physics, The Ohio State University)01/08/2015, 15:30Gamma-ray bursts (GRBs) conceivably contribute to the flux of ultra-high-energy (UHE) cosmic rays and neutrinos, with the latter expected to be produced in proton-photon interactions inside the relativistic plasma jets of GRBs. We consider UHE particle production in a model where cosmic rays are emitted both as neutrons and as protons that are able to overcome their magnetic confinement and...Go to contribution page
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Carlo Francesco Vigorito (University & INFN Torino, Italy)01/08/2015, 15:30The Cherenkov Telescope Array is a world wide project with the aim of exploring the highest energy region of the electromagnetic spectrum. With two arrays, one for each hemisphere, it will guarantee the full sky coverage in the energy range from few tens of GeV to hundreds of TeV, with improved angular resolution and a sensitivity in the TeV energy region better by one order of magnitude than...Go to contribution page
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Dr Ivan Petukhov (Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS)01/08/2015, 15:30The analysis of groundbased measurements of cosmic ray intensity and geomagnetic field during the 96 interplanetary shocks passing by Earth was fulfilled. It was shown that most part of the shocks (49 of 96) were accompanied by simultaneous effects – decreases in the cosmic ray intensity and geomagnetic field. But there was no amplitude accordance: more part of the strong and moderate...Go to contribution page
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Dr Dirk Pandel (Grand Valley State University)01/08/2015, 15:30MGRO J1908+06 is a bright, extended TeV gamma-ray source located near the Galactic plane. The TeV emission has previously been attributed to the pulsar wind nebula (PWN) of the nearby Fermi-LAT pulsar PSR J1907+0602. However, studies of the TeV morphology with VERITAS have shown that MGRO J1908+06 is somewhat larger than other PWNe of a similar age and that the TeV spectrum does not soften...Go to contribution page
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Dr Anna Uryson (Lebedev Physical Institute, RAS)01/08/2015, 15:30The main problem of ultra-high energy cosmic rays (UHECRs) is where they come from. Point UHECR sources seem to be appropriate but they are not discovered. Information about UHECR origin is obtained from particle energy spectrum. In space, particles lose energy in interaction with cosmic microwave background. This results in a lack of particles at E>10^20 eV at the Earth (GZK-effect) if UHECRs...Go to contribution page
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Mr Petr Gololobov (ShICRA of SB RAS)01/08/2015, 15:30In this work the dynamics of tensor anisotropy of cosmic rays during the passage of large-scale disturbances of the solar wind for the 22-24 solar cycles is studied. The information on the anisotropy was obtained using a global survey method by data of the worldwide neutron monitor network. For the analysis of the obtained results the data on the interplanetary magnetic field state and solar...Go to contribution page
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Anastasia Petukhova (Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy)01/08/2015, 15:30Collisionless shocks in space conditions are a source of energetic particles. The particles having low velocity along the normal to the surface of the shock front can be multiply reflected from the electric cross potential of a quasiperpendicular shock and be accelerated by shock surfing. Shock surfing can provide pre-acceleration of particles for subsequent diffusive shock acceleration. The...Go to contribution page
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Dr Jaroslaw Stasielak (Institute of Nuclear Physics PAN, Kraków, Poland)01/08/2015, 15:30We investigate the feasibility of the radar technique for extensive air shower detection. A set of simulations of radio wave reflection off the short-lived plasma produced by the high-energy showers in the air is performed, considering various radar setups and shower geometries. We show that the plasma produced by air showers should be treated always as underdense. Thus, we use the Thomson...Go to contribution page
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Mario Bertaina (Univ. & INFN Torino)01/08/2015, 15:30Previous results obtained by KASCADE-Grande using QGSjetII-02, EPOS1.99 and SIBYLL hadronic interaction models have shown that the energy spectrum of cosmic rays between 10^16 eV and 10^18 eV exhibits a significant hardening at approximately 2 x 10^16 eV, a slight but statistically significant steepening close to 10^17 eV, the `knee', caused by the heavy component of primary cosmic rays, and...Go to contribution page
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Mr Mikhail Amelchakov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))01/08/2015, 15:30The URAN array for EAS study is now under construction in MEPhI in collaboration with INR RAS. The basic element detector for the array is EN-detector sensitive to both thermal neutron and electromagnetic components. For this study we developed a novel type of EN-detector based on a thin layer of alloyed mixture of inorganic scintillator ZnS(Ag) with B_2О_3 as a target for neutrons. Main...Go to contribution page
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Dr Roberto Iuppa (University of Rome Tor Vergata), giuseppe di sciascio (INFN Roma Tor Vergata)01/08/2015, 15:30Understanding the energy spectrum and the mass composition in the range 10 TeV - 10 PeV is crucial to establish a robust model of galactic cosmic rays. To do that, precise measurements are needed, with systematic uncertainties sufficiently low to discriminate among models. In this regard, the issues of the energy and the mass of the knee are scientific cases of particular importance. Contrary...Go to contribution page
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Hiroki ROKUJO (Nagoya University)01/08/2015, 15:30Nuclear emulsion is a high resolution 3D tracking device. 0.2 $\mu$m AgBr crystals penetrated by a charged particle grow into 0.8 $\mu$m silver grains which can be observed as a track by a microscope via chemical development process. The recent fully automated readout systems enabled not only high resolution measurements but also large-scale experiments (accelerator experiments, balloon-borne...Go to contribution page
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Tarek Hassan (GAE-UCM)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) is an international project for a next-generation ground-based gamma-ray observatory. CTA, conceived as an array of tens of imaging atmospheric Cherenkov telescopes, comprising small, medium and large-size telescopes, is aiming to improve on the sensitivity of current-generation experiments by an order of magnitude and provide energy coverage from 20 GeV to...Go to contribution page
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Mr Gabriele Cologna (LSW Heidelberg)01/08/2015, 15:30The high-frequency peaked BL Lac object 1ES$\,$0229+200 (z$\,$=$\,$0.14) was first detected in very high energy (VHE, E$\,$>$\,$100$\,$GeV) $\gamma$-rays by the H.E.S.S. (High Energy Stereoscopic System) collaboration in 2006. No variability was reported in the source in the initial study and its spectral characteristics have been used to derive constraints on the extragalactic background...Go to contribution page
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Dr Vladimir Makhmutov (Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia)01/08/2015, 15:30The experimental data on galactic cosmic ray fluxes in the atmosphere are presented for 5 eleven year solar cycles from the 19-th solar cycle till the 24-th one. The cosmic ray data were obtained in the northern and southern polar atmospheres and in the northern atmosphere of the middle latitude. The analysis of monthly averages is made, namely: the relationship cosmic ray fluxes with solar...Go to contribution page
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Mr Gernot Maier (DESY)01/08/2015, 15:30HESS J0632+057 is a X-ray binary, previously observed over six years with the Imaging Air Cherenkov Telescopes H.E.S.S., MAGIC, and VERITAS. New data taken in the last three years with the VERITAS observatory as part of its long-term observing plan are presented here. They cover the entire period of about 315 days including the enhancements at the phases of about 0.35 and, for the first time...Go to contribution page
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Schoo Sven (KIT)01/08/2015, 15:30The KASCADE-Grande Muon Tracking Detector allowed measurements with high accuracy for the directions of EAS muons having energy above 0.8 GeV. Combining information about the direction of the extensive air shower, obtained with the KASCADE-Grande particle detector array, and the directions of reconstructed muon tracks we have investigated the muon production heights by means of the...Go to contribution page
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Rickard Stroem (Uppsala University)01/08/2015, 15:30IceCube searches for neutrino point sources in the southern sky have traditionally been restricted to energies well above 100 TeV, where the background of down-going atmospheric muons becomes sufficiently low to be tolerated in searches. Recent developments of a data stream dedicated to the study of low-energy neutrinos from the Southern hemisphere enables searches to be extended far below...Go to contribution page
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Dr Xunxiu Zhou (School of Physical Science and Technology, Southwest Jiaotong University)01/08/2015, 15:30ARGO-YBJ, located at the YangBaJing Cosmic Ray Observatory (4300m a.s.l., Tibet, China), is a full coverage air shower array, with an energy threshold of about 300 GeV for gamma ray astronomy. Most of the recorded events are single showers, satisfying the trigger requirement of at least 20 particles detected in a given time window. However, in ~5% of the events, two randomly arriving showers...Go to contribution page
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Alessandro Carosi (INAF-ASDC)01/08/2015, 15:30The BL Lac object RBS 0723 is an extreme BL Lac object (EHBL) candidate. These sources are known to show an extreme frequency of their synchrotron and inverse Compton peaks in the spectral energy distribution (in the hard X-ray and TeV bands respectively). Furthermore, they are characterized by the extreme hardness of the UV-X-ray and intrinsic TeV continua. These characteristics are usually...Go to contribution page
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Igor Petrov (Yu. G. Shafer Institute of Cosmophysical Research and Aeronomy)01/08/2015, 15:30In the paper are present the new results for the mass composition of cosmic rays, obtained of the energy region 10^16 – 10^18 eV. The data were obtained at Small Cherenkov array over a 20 - year period of continuous observation. The our experimental data are indicate at changed in the mass composition in the energy range 10^16 - 10^18 eV and it’s confirmed by independent results obtained by...Go to contribution page
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Ralph Richard Engel (KIT - Karlsruhe Institute of Technology (DE))01/08/2015, 15:30The flux of atmospheric leptons is the main background for measurements of astrophysical neutrinos. This natural beam can be used in studies of neutrino phenomenology at very high energies, such as in searches for sterile neutrinos or the determination of the mass hierarchy. The success of the measurements crucially depends on the precision of theoretical calculations. The presented...Go to contribution page
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Dr Pierre-Simon MANGEARD (National Astronomical Research Institute of Thailand, Mahidol University)01/08/2015, 15:30Neutron monitors are the premier instruments for precise measurements of time variations (e.g., of solar origin) in the Galactic cosmic ray (GCR) flux in the range of ∼1-100 GeV. However, it has proven challenging to accurately determine the yield function (efficiency) vs. rigidity in order to relate a neutron monitor’s count rate with those of other monitors in the worldwide network and the...Go to contribution page
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Ms Zhen Tian (Institute of high energy physics)01/08/2015, 15:30In gamma-ray astronomy, the time structure of the shower front is crucial to improve the angular resolution of primaries for ground-based experiments. With its full coverage detection area, high time resolution and excellent spatial granularity, the ARGO-YBJ experiment offers a good opportunity to study in detail the temporal behavior of the gamma-ray shower fronts. In this work, by using the...Go to contribution page
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Stephanie Wissel (UCLA)01/08/2015, 15:30The SLAC T-510 experiment provides the first beam-test of radio- frequency radiation from a charged particle cascade in the presence of a magnetic field (up to 1kG), a model system for radio-frequency emission from a cosmic ray air shower. The primary purpose of this experiment is to provide a suite of controlled laboratory tests to compare to models based on particle-level models of RF...Go to contribution page
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Anna Nelles (Radboud University Nijmegen)01/08/2015, 15:30The ARIANNA collaboration has recently completed the installation of a seven-station hexagonal array of radio detectors. This Hexagonal Radio Array (HRA) serves as a prototype for a large neutrino telescope planned for construction on the Ross Ice Shelf of Antarctica. Upgraded hardware installed during the 2014 deployment season will be summarized. A review of ice properties at the ARIANNA...Go to contribution page
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Dr Semen Khokhlov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))01/08/2015, 15:30The NEVOD-EAS detector designed for the registration of extensive air showers in the primary particle energy range of 10^15 – 10^17 eV is currently being created on the basis of the experimental complex NEVOD-DECOR. The measuring system of the NEVOD-EAS detector has a cluster organization and is located in the MEPhI campus (Moscow, Russia). In total, the detector includes 12 clusters of...Go to contribution page
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Zigfried Hampel-Arias (UW Madison)01/08/2015, 15:30The High-Altitude Water Cherenkov (HAWC) Observatory records the air showers produced by cosmic rays and gamma rays at a rate of about 15 kHz. While the events observed by HAWC are 99.9% hadronic cosmic rays, this background can be strongly suppressed using topological cuts that preferentially select electromagnetic air showers. Using this capability of HAWC, we can create a sample of air...Go to contribution page
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Ramin Marx (MPIK)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) will be a ground-based gamma-ray observatory with full-sky coverage in the very-high energy (VHE) regime. It is proposed to consist of more than 100 telescopes and should produce large amounts of data. Apart from the impact on the storage system, this also imposes tight requirements on the software framework to ensure efficient and robust data processing and...Go to contribution page
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Konstantin Herbst (Christian-Albrechts-Universität zu Kiel)01/08/2015, 15:30Neutron monitors (NMs) are ground-based devices to measure the variation of cosmic ray intensities. They are reliable devices but difficult to install because of their size and weight. Therefore a portable mini NM (MNM) that can be installed as an autonomous station at any location that provides suitable conditions has been developed recently. The first continuous measuring MNMs are installed...Go to contribution page
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Stefan Geißelsöder (FAU Erlangen)01/08/2015, 15:30ANTARES is the largest operational neutrino telescope in the Northern Hemisphere, located in the Mediterranean Sea at a depth of 2500 metres. The direction and energy of the observed particles are reconstructed from the time and amplitude information recorded by the photomultipliers. The collected set of reconstructed events can be analysed with respect to the spatial, temporal and energy...Go to contribution page
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Anne Zilles (KIT)01/08/2015, 15:30The SLAC T-510 experiment was designed to verify established microscopic models for simulation of radio emission from air showers by reproducing the physics under controlled lab conditions. For this verification, the simulation toolkit Geant4 was expanded by the calculation of the emitted radio signal with the "end-point" and the "ZHS" formalisms in parallel. We present and compare the...Go to contribution page
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Xin Wu (Universite de Geneve (CH))01/08/2015, 15:30The Data Acquisition system (DAQ) of the future Cherenkov Telescope Array (CTA) must be efficient, modular and robust to be able to cope with the very large data rate of up to 100 GByte/s coming from many telescope with different characteristics. The use of modern middleware, namely zeroMQ and protocol buffers, helped to achieve these goals while keeping the development effort to a reasonable...Go to contribution page
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Mr Martin Schrön (Helmholtz Centre for Environmental Research - UFZ)01/08/2015, 15:30Neutron monitors on Earth are usually used to track the dynamics of incoming cosmic-ray particles under the assumption that local environmental conditions do not influence the highly shielded signal. Oppositely, in a young research field the local dynamics of environmental water is monitored by detecting less moderated cosmic-ray neutrons. Water in soil, air, snow and vegetation determines...Go to contribution page
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Mr GERNOT Maier (DESY)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) is the next-generation gamma-ray observatory with sensitivity in the energy range from ~20 GeV to beyond 300 TeV. CTA is proposed to consist of two arrays of 40-100 imaging atmospheric Cherenkov telescopes, with one site located in each of the Northern and Southern Hemispheres. The evaluation process for the candidates sites for CTA is supported by detailed...Go to contribution page
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Mr Thomas Armstrong (Dept. of Physics and Centre for Advanced Instrumentation, Durham University,UK)01/08/2015, 15:30The Gamma-ray Cherenkov Telescope (GCT) is an innovative dual-mirror solution to the small-size telescopes for CTA, capable of imaging the Cherenkov light produced in the atmosphere by cosmic gamma rays with energies from a few TeV to hundreds of TeV. The reduced plate scale resulting from the secondary optics allows the use of compact photosensors, including multi-anode photomultipliers...Go to contribution page
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Piera Sapienza (LNS)01/08/2015, 15:30KM3NeT is a large research infrastructure that will consist of a network of deep-sea neutrino telescopes in the Mediterranean Sea, of which the ARCA detector installed at the CapoPassero site (Italy) is optimised for studying high-energy neutrinos of cosmic origin. The "golden channel" for neutrino astronomy with Cherenkov telescopes is the muon-neutrino charged-current interaction. The...Go to contribution page
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Dr Dariusz Gora (Humboldt University)01/08/2015, 15:30IceCube is capable of monitoring the whole sky continuously, while optical and high energy photon telescopes have limited fields of view and are not likely to observe a potential neutrino-flaring source at the time such neutrinos are recorded. The use of neutrino-triggered alerts thus aims at increasing the availability of simultaneous multi-messenger data, which can increase the discovery...Go to contribution page
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Luiz da Silva (University of Wisconsin - Milwaukee)01/08/2015, 15:30The recent observation of an astrophysical flux of neutrinos at the IceCube telescope represents the ''first light'' in the burgeoning field of neutrino astronomy. Motivated by this long-awaited discovery, we re-examine the potential high energy neutrino emission from compact binaries on the basis of state-of-the-art proton acceleration models, and interaction of those protons with plasma...Go to contribution page
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Mr arvind dubey (rani durgawati university jabalpur india)01/08/2015, 15:30Neutron monitor have recorded the flux of high energy cosmic rays from more than half century .Cosmic rays counts from the ground based neutron monitor at different cut off rigidity show intensity changes, which are anti correlated with sunspot numbers. They also lose energy as they propagate towards the Earth and experience various types of modulations due to different solar activity . In...Go to contribution page
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Alexandre Ghelfi (Centre National de la Recherche Scientifique (FR)), David Alain Maurin (Centre National de la Recherche Scientifique (FR)), Laurent Yves Marie Derome (Centre National de la Recherche Scientifique (FR))01/08/2015, 15:30Galactic cosmic-ray fluxes (GCR) and neutron monitor (NM) cout rates depend on Solar activity. The modulation levels estimated in previous studies strongly depend on the datasets used (from different NM stations or GCR data) and on the different assumptions made (unknown interstellar flux, NM yield functions, ... ). We discuss an improved method to estimate the modulation parameter φ for any...Go to contribution page
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Marcos Alfonso Anzorena Méndez (Instituto de Geofísica, Universidad Nacional Autónoma de México)01/08/2015, 15:30Solar neutron telescopes (SNTs) were designed to observe neutrons emitted during solar flares. All SNTs consist of a number of central scintillator plates, surrounded by proportional counters or thin scintillator detectors. Incoming neutrons interact with nuclei within the scintillator and produce recoil protons. The energy of a neutron may be estimated from the light emitted by the recoil...Go to contribution page
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Igor Moskalenko (Stanford University)01/08/2015, 15:30A dramatic increase in the accuracy and statistics of space-borne cosmic ray (CR) measurements has yielded several breakthroughs over the last several years. The most puzzling is the rise in the positron fraction above 10 GeV over the predictions of the propagation models assuming pure secondary production. Antiprotons are produced in CR interactions with interstellar gas and are, therefore,...Go to contribution page
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Dr Kenji Shinozaki (Unverisity of Tubingen)01/08/2015, 15:30The chemical composition of the very high energy cosmic rays (VHECRs) is an important piece of information to investigate their origin and acceleration mechanism. Possible change of chemical composition at the knee energy range has been reported by air shower experiments based on sampling of muons or Cherenkov photons. So far low flux of VHECRs along with uncertainties due to indirect...Go to contribution page
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Christian Steigies01/08/2015, 15:30The Neutron Monitor database NMDB, which has been funded by the FP7 program of European Commission, has been providing both real-time as well as historical data since its inception in 2008. In the beginning only the participants from a few European and Asian countries where providing their data to the database. However, the number of stations participating in NMDB is still increasing so...Go to contribution page
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Dr Natalia Barbashina (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))01/08/2015, 15:30Cosmic rays flux detected on the Earth's surface penetrates the heliosphere and carries information about the processes occurring in it. Muon hodoscope URAGAN allows reconstruct the tracks of cosmic ray muons with a high angular accuracy (about 1 degree) in a wide range of zenith (0-80 degrees) and azimuthal angles (0-360 degrees) in real time. Methods developed for URAGAN muon hodoscope data...Go to contribution page
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Dr Makoto Miura (Kamioka observatory, ICRR, University of Tokyo)01/08/2015, 15:30As a general feature, Grand Unified Theories (GUTs) predict that protons will decay someday. Proton decay search needs large detector which contains tremendous number of protons and backgrounds of this search are cosmic rays, especially, atmospheric neutrinos. Super-Kamiokande, which is known as a famous neutrino detector, also has the highest sensitivity for nucleon decays in the world. This...Go to contribution page
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Kinya Hibino (Kanagawa University)01/08/2015, 15:30To measure the correlation between thundercloud and atmospheric charged particles, we have installed some atmospheric electric field meter at a site on the Tibet Air hower Array 4,300m a.s.l.) since February 2010. In this paper, we report some results of coincident observation of data from the array and atmospheric electric field during thunderstorm. In addition, we present comparisons of a...Go to contribution page
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Prof. Andrea Santangelo (Institut fuer Astronomie und Astrophysik, Tuebingen)01/08/2015, 15:30Similarly to extreme energy cosmic rays (EECRs), neutrinos at energies exceeding $5\times 10^{19}$ eV are expected to interact in the Earth's atmosphere and create extensive air showers. The JEM-EUSO mission, developed to be hosted onboard the JEM module of the International Space Station, aims at detecting these extensive air showers from space by means of the fluorescent and diffusively...Go to contribution page
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Konstancja Satalecka (UCM, Spain)01/08/2015, 15:30More than one-third of the sources reported in the 1st and 2nd Fermi catalogs (1FGL and 2FGL) lack a clear association with a known astrophysical source, and are known as Unassociated Fermi Objects (UFOs). We report MAGIC observations of three UFOs selected basing on their high energy spectral properties (e.g. hardness of the spectrum), as well as on additional multiwavelength information,...Go to contribution page
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Prof. Hongbo Hu (IHEP)01/08/2015, 15:30The standard model of cosmic ray propagation has been very successful in explaining all kinds of the Galactic cosmic ray spectra. However, high precision measurement recently revealed the appreciable discrepancy between data and model expectation, from spectrum observations of $\gamma$-rays, $e^+/e^-$ and probably the $B/C$ ratio starting from $\sim$10 GeV energy. In this work, we...Go to contribution page
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Danislav Sapundjiev (Royal Meteorological Institute of Belgium)01/08/2015, 15:30The neutron monitor (NM) remains the best available instrument for monitoring the secondary nucleonic component of the galactic cosmic rays for more than 80 years. Today, NMs have been given another role related to satellite-based technologies for monitoring and forecasting of space weather events. At many sites around the world, the old neutron monitors were refurbished and synchronised into...Go to contribution page
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John Felde (University of Maryland)01/08/2015, 15:30Gamma Ray Bursts (GRBs) have long been suspected as the sources for the ultra high energy cosmic rays. For this to be true, a mechanism must exist within the GRB to produce hadrons, a consequence of which is the production of neutrinos. So far, no significant observation has been made that suggests GRBs produce neutrinos. The IceCube neutrino Observatory, a cubic kilometer ice Cherenkov...Go to contribution page
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Ramin Marx (MPIK)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) is the next generation observatory for the study of very high-energy gamma rays from about 20 GeV up to 300 TeV. Thanks to the large effective area and field of view, the CTA observatory will be characterized by an unprecedented sensitivity to transient flaring gamma-ray phenomena compared to both current ground (e.g. Magic, HESS) and space (e.g. Fermi)...Go to contribution page
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Jonathan Biteau (UC Santa Cruz)01/08/2015, 15:30Gamma-ray observations in the very-high-energy domain (E > 30 GeV) can exploit the imaging of Cherenkov flashes lasting a few nanoseconds from atmospheric particle showers. Photomultipliers have been used as the primary photosensors to detect gamma-ray induced Cherenkov light for the past 25 years, but they are increasingly challenged by the swift progress of silicon photomultipliers (SiPMs)....Go to contribution page
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Steven Barwick (University of California)01/08/2015, 15:30The ARIANNA collaboration has recently completed the installation of a seven-station hexagonal array of radio detectors. These detectors seek to measure radio pulses generated by extremely high energy cosmic neutrino interactions. The detectors are deployed on the Ross Ice Shelf of Antarctica and collect data during the austral summer months. Data is delivered off continent in near real-time....Go to contribution page
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Pierre Colin (MPI fuer Physik)01/08/2015, 15:30MAGIC is a system of two 17m diameter Imaging Atmospheric Cherenkov Telescopes (IACT) located at the Observatorio del Roque de los Muchachos in the Canary island of La Palma. It observes the gamma-ray sky from ~50 GeV to more than 50 TeV. The IACT technique works preferentially in very dark condition. The best performance and lowest energy threshold are reached at dark astrophysical sites...Go to contribution page
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Mr Mohammad Hussein (University of Manitoba)01/08/2015, 15:30A model for noisy reduced magneto-hydrodynamic (NRMHD) turbulence was recently proposed. This model was already used to compute the diffusion coefficient of random walking magnetic field lines based on the nonlinear diffusion theory. We use the same model to investigate the diffusion of energetic particles across the mean magnetic field. To do that we have used two analytical theories,...Go to contribution page
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Dr Vladimir Ryabov (P.N. Lebedev Physical Institute, RAS, Moscow, Russia)01/08/2015, 15:30The problem of searching for highest-energy cosmic rays and neutrinos in the Universe is reviewed. Possibilities for using the radio method for detecting particles of energies above the CZK cut-off are analyzed. The method is based on the registration of coherent Cherenkov radio emission produced by cascades of most energetic particles in radio-transparent lunar regolith. The Luna-26 space...Go to contribution page
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705. Photon Counting with a Fully Digital FDIRC (Focused Differential Internal Reflection Cherenkov)Pier Simone Marrocchesi (University of Siena (IT) and INFN Pisa)01/08/2015, 15:30A prototype of an Internal Reflection Cherenkov, with a SiO2 (Fused Silica) radiator bar optically connected to a cylindrical mirror, was tested at CERN SPS in March 2015 with a beam of relativistic ions obtained from fragmentation of primary argon nuclei at energies 13 and 30 GeV/n. The detector, designed to identify cosmic nuclei, features an imaging focal plane of dimensions ~4 cm x 3 cm...Go to contribution page
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Shoushan Zhang (Institute of High Energy Physics)01/08/2015, 15:30The PMT array is the most important detection unit for IACT. The high precision Cosmic ray energy spectrum measurement relies on the performance of the PMT array. The PMT gain can be ageing over time, which can impact the performance of the PMT array. A facility of photoelectron meter is developed for high precision online nonlinearity calibration and monitoring the performance of the PMT...Go to contribution page
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Alexandru Gherghel-Lascu (IFIN-HH Bucharest)01/08/2015, 15:30The primary energy of cosmic rays is reconstructed at KASCADE-Grande using different approaches based on different sets of recorded observables. We present the results of an approach based on the S(500) observable which is the charged particle density recorded at 500 m distance from the shower axis. Previous investigations based on CORSIKA simulations (with QGSJet-II-2 model embedded for high...Go to contribution page
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Iurii Sushch (North-West University)01/08/2015, 15:30Blazars, a class of radio-loud active galactic nuclei with their jets pointed close to the line of sight to Earth, are the most abundant extragalactic gamma-ray sources detected both by the Fermi Gamma-Ray Space Telescope and by groundbased atmospheric Cherenkov Telescope facilities. Most blazars are known to be hosted in giant Elliptical galaxies, but their cluster environments are poorly...Go to contribution page
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michele iacovacci (INFN)01/08/2015, 15:30By means of the analog readout, the ARGO-YBJ experiment is able to image the very hot region of the shower core up to particle density of many 10^4/m^2. Exploiting this feature the number of particles within 10 m from the core and the local age have been carefully studied. This cascade region is mainly developed from particles produced in the first interactions with pseudorapidity eta > 7,...Go to contribution page
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Carlo Francesco Vigorito (Universita' di Torino), Silvia Vernetto (Istituto Nazionale di Astrofisica)01/08/2015, 15:30The LHAASO (Large High Altitude Air Shower Observatory) experiment, currently under design, is planned to be installed in the Sichuan Province (China) at 4410 m a.s.l. with the aim of studying the highest energy gamma-ray sources and cosmic rays in the wide energy range from hundreds of GeV to hundreds of TeV. Among its different components, optimized to study different energy regions,...Go to contribution page
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Elisabetta Bissaldi (INFN Bari)01/08/2015, 15:30The first Gamma-Ray Burst catalog presented by the Fermi-LAT collaboration includes 28 GRBs, detected above 100 MeV over the first three years since the launch of the Fermi mission. However, more than 100 GRBs are expected to be found over a period of six years of data collection thanks to a new detection algorithm and to the development of a new LAT event reconstruction, the so-called "Pass...Go to contribution page
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Michael Daniel01/08/2015, 15:30The assumption of Lorentz invariance is one of the founding principles of modern physics and violation of that would have deep consequences to our understanding of the universe. Potential signatures of such a violation could range from energy dependent dispersion introduced into a light curve to a change in the photon-photon pair production threshold that changes the expected opacity of the...Go to contribution page
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Jacek Niemiec (Institute of Nuclear Physics PAN, Krakow, Poland)01/08/2015, 15:30A single-mirror small-size (SST-1M) Davies-Cotton telescope with a dish diameter of 4 m has been built by a consortium of Polish and Swiss institutions for the southern observatory of the Cherenkov Telescope Array (CTA). The design represents a very simple, reliable, and cheap solution for a small size telescope of CTA. The mechanical structure prototype with its drive system is now being...Go to contribution page
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Iurii Sushch (North-West University)01/08/2015, 15:30The initially unidentified very high energy (VHE; E > 100 GeV) gamma-ray source HESS J1303-631 was recently associated with the pulsar PSR J1301-6305 basing on its enregy-dependent morphology. Subsequent detection of X-ray and GeV counterparts also support the identification of the H.E.S.S. source as evolved pulsar wind nebula (PWN). We report here on recent radio observations of the PSR...Go to contribution page
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Jan Ebr (Institute of Physics, Prague)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) is the next generation of ground-based very high energy gamma-ray instruments and will be built on two sites (one in each hemisphere) in the coming years, with full array operation foreseen to begin 2020. The goal of performing a high precision gamma-ray energy measurement while maximizing the use of observation time demands detailed and fast information...Go to contribution page
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Dr A.W. Strong (MPE Garching)01/08/2015, 15:30Recent extensions to GALPROP Some recent extensions to the GALPROP cosmic-ray propagation package will be described. These are built on the public version released a few years ago. The enhancements include: an accurate solution option, improved convection formulation, alternative spatial boundary conditions, polarized synchrotron emission, new magnetic field models, updated...Go to contribution page
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Dominik Stransky01/08/2015, 15:30KM3NeT is a future research infrastructure hosting the next-generation underwater neutrino observatory in the Mediterranean Sea. Within KM3NeT, the ARCA detector will be devoted to the observation of high-energy cosmic neutrinos both in diffuse and point source mode. The discovery of cosmic high energy neutrinos by the IceCube collaboration with a large fraction of shower-like events has led...Go to contribution page
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Florian Gaté (SUBATECH)01/08/2015, 15:30Cosmic rays have a wide energy spectrum and their flux decreases quickly with the energy. For the most energetic events (above $10^{17}$ eV), the mass composition is not well known, due to shower to shower fluctuations. The knowledge of the mass composition would allow us to constrain theoretical models which predict different types of source and acceleration mechanism according to the mass of...Go to contribution page
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salvatore galata (CNRS)01/08/2015, 15:30KM3NeT is a next-generation research infrastructure being installed in the deep seas at the south coasts of Europe. Within this infrastructure, KM3NeT/ORCA is a future neutrino telescope targeting the measurement of the neutrino mass hierarchy (NMH) by investigating atmospheric neutrino oscillation in matter in the energy range between 5 and 20 GeV. Charged-current muon-neutrino events...Go to contribution page
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Dr Adrian C. Rovero (Instituto de Astronomia y Fisica del Espacio (IAFE, CONICET-UBA))01/08/2015, 15:30Gamma-ray emission in the range of VHE (TeV) is strongly attenuated by the photon-photon interaction with the extragalactic background light (EBL), the diffuse cosmological radiation field (UV to far-IR) encompassing all radiative energy releases since recombination. As a consequence all discovered VHE sources are relatively close (z <0.6, except perhaps for the recent detection of the blazar...Go to contribution page
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Luigi Antonio Fusco (University of Bologna)01/08/2015, 15:30KM3NeT is a future research infrastructure hosting the next-generation underwater neutrino observatory in the Mediterranean Sea. Within KM3NeT, the ORCA detector will be devoted to the measurement of the neutrino mass hierarchy, by investigating matter-induced effects in the oscillation pattern of atmospheric neutrinos. The main background for this search is given by atmospheric muons coming...Go to contribution page
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Dr Olga Kryakunova (Instutute of Ionosphere, Almaty, Kazakhstan)01/08/2015, 15:30Variations of the cosmic ray vector anisotropy observed on Earth are closely related on the condition of near the Earth interplanetary medium. The hourly characteristics of vector anisotropy obtained by the global survey method from the data of world wide neutron monitor network during 1957-2013 allow us to investigate connection of the cosmic ray anisotropy with the solar wind parameters. In...Go to contribution page
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Dr Pierre-Simon MANGEARD (National Astronomical Research Institute of Thailand, Mahidol University)01/08/2015, 15:30Neutron monitors are the premier instruments for precisely tracking time variations in the Galactic cosmic ray flux at GeV-range energies above the geomagnetic cutoff at the location of measurement. In addition to the count rate, recording and analysing the time delays between successive counts allows us to infer variations in the cosmic ray spectrum as well. In particular, we can determine...Go to contribution page
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Changqing Feng (University and Science and Technology of China)01/08/2015, 15:30A satellite-borne high energy cosmic ray detector to be launched in the near future, named DArk Matter Particle Explorer (DAMPE), is now being developed in China. The major scientific objectives of DAMPE mission are primary cosmic ray, gamma ray astronomy and dark matter particles, by observing cosmic rays with an energy range from 5 GeV to 10 TeV. An electromagnetic calorimeter, which...Go to contribution page
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Tim Huege (KIT)01/08/2015, 15:30One of the main aims of the LOPES experiment was the evaluation of the absolute amplitude of the radio signal of air showers. This is of special interest since the radio technique offers the possibility for an independent and highly precise determination of the energy scale of cosmic rays on the basis of signal predictions from first principles. For the calibration of the amplitude...Go to contribution page
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Iurii Sushch (North-West University)01/08/2015, 15:30PSR B1259-63/LS 2883 is a very high energy (VHE; E > 100 GeV) gamma-ray emitting binary consisting of a 48 ms pulsar orbitting around a Be star with a period of 3.4 years. The Be star features a circumstellar disk which is inclined with respect to the orbit in such a way that the pulsar crosses it twice every orbit. The circumstellar disk provides an additional field of target photons which...Go to contribution page
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Prof. Kazuoki Munakata (Department of Physics, Shinshu University, Asahi, Matsumoto 390-8621, JAPAN.)01/08/2015, 15:30We plan to use the SciCRT as a new muon detector and fill a gap remaining in the viewing directions of the present GMDN which currently consists of four multi-directional muon detectors in Japan, Australia, Brazil and Kuwait. In order to minimize the data acquisition time, the muon measurement is triggered by the four-fold coincidence between pulses from the top and bottom pairs of the x- and...Go to contribution page
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giuseppe di sciascio (INFN Roma Tor Vergata)01/08/2015, 15:30Detection of gamma rays from the annihilation or decay of dark matter particles is a promising method for identifying dark matter, understanding its intrinsic properties, and mapping its distribution in the universe. The searches feature many different target types, including dwarf spheroidal galaxies, galaxy clusters, the Milky Way halo and inner Galaxy and unassociated Fermi-LAT...Go to contribution page
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Dr Dmitri Ivanov (University of Utah)01/08/2015, 15:30From about 1-3 EeV, results from the HiRes, Telescope Array, and Pierre Auger experiments all indicate that cosmic ray composition is light, probably protonic. Since this energy range is above the critical energy of the galactic magnetic field, if these cosmic rays are of galactic origin there should be an anisotropy in their arrival directions at the earth. We will present a calculation of...Go to contribution page
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Reetanjali Moharana (University of Johannesburg)01/08/2015, 15:30Detection of 35 very high-energy (VHE) neutrinos by the IceCube Neutrino Observatory has opened a new chapter in multi-messenger astronomy. Due to large errors in measuring the directions of the neutrino shower-type events, which dominate the current event list, it is difficult to identify their astrophysical sources. We perform cross-correlation study of IceCube neutrino events with...Go to contribution page
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493. Search for GRB neutrino emission according to the photospheric model with the ANTARES telescopeMatteo Sanguineti (INFN Genova - Università di Genova)01/08/2015, 15:30The ANTARES detector is the largest neutrino telescope currently in operation in the North Hemisphere. One of the main goals of the ANTARES detector is the search for point-like neutrino sources including transient sources like GRBs. In the so-called photospheric model for the emission from GRBs the interaction of the radiation field with the leptonic component of the outflow could lower...Go to contribution page
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Mr Giuliano Maggi (Vrije Universiteit Brussel)01/08/2015, 15:30The recent discovery of high-energy cosmic neutrinos by the IceCube neutrino observatory opens up a new field in physics, the field of neutrino astronomy. Using the IceCube neutrino detector we plan to search for high energy neutrinos emitted from Active Galactic Nuclei (AGN). AGN are believed to be one of the most promising sources for emitting these weakly interacting particles. We discuss a...Go to contribution page
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Ms Gabriela Pavalas (Institute of Space Science)01/08/2015, 15:30About thirty years ago, strange quark matter (SQM) was hypothesized to be the ground state of hadronic matter and was also suggested as a cold dark matter candidate. Although there is no experimental or astrophysical evidence for its existence so far, SQM may be present in the cosmic radiation as relic particles of the early Universe, or as fragments released in binary strange star collisions...Go to contribution page
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Segev BenZvi (University of Rochester)01/08/2015, 15:30The High-Altitude Water Cherenkov (HAWC) Observatory is a large field-of-view, high-uptime detector which measures TeV cosmic rays and gamma rays from 2/3 of the sky each day. The large uptime and field of view make the detector well-suited to observe time-dependent emission from objects such as pulsars and TeV binaries. Very high energy gamma rays have been observed from only a small number...Go to contribution page
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Mr Damien TURPIN (ANTARES-CPPM)01/08/2015, 15:30Gamma-ray bursts (GRB) are the most energetic transient sources observed in the Universe. They are supposed to be produced by the emission of an inhomogeneous relativistic jet in which energy dissipation occurs via internal shocks. In these shocks, particles as electrons and protons could be accelerated at very high energies via Fermi acceleration processes. Thus, GRB are promising...Go to contribution page
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Dr Gordana Tešić (Penn State)01/08/2015, 15:30Primordial black holes (PBHs) are expected to explode violently during the last few seconds of their lives, producing jets of high energy particles. These particles could be detected in coincidence by several observatories with large fields of view, such as IceCube and ANTARES (neutrinos), HAWC and Fermi LAT (gamma rays) and Pierre Auger (neutrons). The short temporal structure of the...Go to contribution page
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Prof. Shuwang Cui (Hebei Normal University, China)01/08/2015, 15:30The PRISMA project developed for cosmic ray study above 30 TeV is now realized as 2 prototypes at different altitudes. Special en-detectors are used for both electron and neutron components recording. An array of 4 such detectors is running in Yang Ba Jing (Tibet, China) at altitude 4300 m a. s. l. since January 2013. To be sure that thermal neutron background is stable we also study its...Go to contribution page
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Thomas Heid (Universitaet Erlangen)01/08/2015, 15:30A main objective of the future neutrino telescope KM3NeT/ARCA is the detection and measurement of extraterrestrial neutrinos. Atmospheric neutrinos, which are produced in particle showers in the Earth's upper atmosphere, represent the main background to this signal. Muon bundles which accompany downgoing atmospheric neutrinos can be used to differentiate the latter from their extraterrestrial...Go to contribution page
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Dr Galina Vankova-Kirilova (University of Sofia, Bulgaria)01/08/2015, 15:30The ultra high energy cosmic neutrinos are source of knowledge for both astrophysical mechanisms of particle acceleration and fundamental interactions. They open a window into the very distant and high-energy Universe that is difficult to access by any human means and devices. The possibility of detecting them in large exposure space-based apparatus, like JEM-EUSO, is an experimental...Go to contribution page
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Alexander Mishev (INRNE-BAS)01/08/2015, 15:30Observations of intense sporadic solar-neutron events provide a unique opportunity to study energetic processes of particle acceleration during solar flares. Such neutrons are produced in nuclear reactions of high-energy (from several hundred MeV/nuc to several GeV/nuc) particles in the solar atmosphere and surface. The existing neutron monitor (NM) network provides a continuous record of...Go to contribution page
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Dr Luisa Ferreira Da Gama Velho Arruda (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part)01/08/2015, 15:30The Multi-Functional Spectrometer (MFS) is a radiation monitor that together with CTTB (Component Technology Test Bed) make the AEEF-TDP8 (ESA Alphasat Environment and Effects Facility - Technology Demonstration Payload 8). The two units are installed on the X panel of the Alphasat satellite as a hosted payload. MFS is an instrument specifically designed to characterise the Space Radiation...Go to contribution page
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Jannik Hofestädt (ECAP)01/08/2015, 15:30The determination of the neutrino mass hierarchy is a central goal of upcoming neutrino physics experiments. In a detailed investigation we have evaluated the potential of the multi-megaton underwater KM3NeT/ORCA detector (Oscillation Research with Cosmics in the Abyss) to perform this measurement using atmospheric neutrinos in the multi-GeV energy range. The detector will be a dense array of...Go to contribution page
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Stanislav Stefanik (Institute of Particle and Nuclear Physics, Charles University in Prague)01/08/2015, 15:30We describe a straightforward modification of frequently invoked methods for the determination of the statistical significance of a $\gamma$-ray signal observed in a counting process. A simple criterion is proposed to decide whether a set of measurements of the numbers of photons registered in the source and background regions is consistent with the assumption of a constant source...Go to contribution page
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Riccardo Rando (University and INFN Padova)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) is the the next generation facility of Imaging Atmospheric Cherenkov Telescopes; two observatories will cover both hemispheres. CTA will reach unprecedented sensitivity, energy and angular resolution in very-high-energy gamma-ray astronomy. Each CTA array will include four Large Size Telescopes (LSTs), designed to cover the low-energy range of the CTA...Go to contribution page
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Atsushi Iyono (Okayama University of Science)01/08/2015, 15:30To examine the nuclear emulsion chemical uniformity or Poisson distribution of grains, simulations of electron trajectory have been carried out on the basis of the single elastic scattering Monte Carlo method considering energy straggling processes and their fluctuations. To compare these simulated results, image processing method of charged particle tracks in nuclear emulsion have also been...Go to contribution page
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Javier Gonzalez (Bartol Research Institute, Univ Delaware), Sebastian Euler (Uppsala University)01/08/2015, 15:30Motivated by the evidence of astrophysical neutrinos seen in IceCube, we consider various array configurations of particle detectors and study their efficiency for identifying neutrinos of astrophysical origin when combined with IceCube or a next generation neutrino detector at the South Pole. The identification of astrophysical neutrinos is accomplished by tagging muons and neutrinos of...Go to contribution page
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Amanda Weinstein (Iowa State University)01/08/2015, 15:30It is anticipated that the forthcoming Cherenkov Telescope Array will include a number of medium-sized telescopes that are constructed using a dual-mirror Schwarzschild-Couder configuration. These telescopes will sample a wide (8 degree) field of view using a densely pixelated camera comprising over $10^{4}$ individual readout channels. A readout frequency congruent with the expected...Go to contribution page
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David Ruffolo (Mahidol University)01/08/2015, 15:30Ionizing radiation in the Earth’s troposphere is mainly due to Galactic cosmic rays, but ground level enhancements (GLEs) can produce relativistic ions with such enormous intensity that their ionization effect in the Earth’s lower atmosphere is significant. One of the largest GLEs ever observed occurred on January 20, 2005, which resulted in very large increases in the count rates of...Go to contribution page
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Dr Fabian Schüssler (Irfu, CEA-Saclay)01/08/2015, 15:30Microquasars, Galactic binary systems showing extended and variable radio emission, are potential gamma-ray emitters. Indications of gamma-ray transient episodes have been reported in at least two systems, Cyg X-1 and Cyg X-3. The identification of additional gamma-ray emitting microquasars is key for a better understanding of these systems. Very-high energy gamma-ray emission from...Go to contribution page
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Dr Yutaka Matsubara (STE-Laboratory, Nagoya University)01/08/2015, 15:30At 16:06UT on July 8, 2014, an M6.5-class flare was observed at N12E56 of the solar surface. In association with this flare, solar neutron detectors located on two high mountains, Mt. Sierra Negra and Chacaltaya and at the space station observed enhancements in the neutral channel. The authors analyzed these data and a possible scenario of enhancements produced by high-energy protons and...Go to contribution page
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Dr Elisabetta Bissaldi (INFN Trieste)01/08/2015, 15:30The Italian Institute of Nuclear Physics (INFN) is involved in the development of a demonstrator for a SiPM-based camera for the Cherenkov Telescope Array experiment, with a pixel size of 6x6mm$^2$. The camera houses about two thousands electronics channels and is both light and compact. In this framework, an R&D program for the development of SiPMs suitable for Cherenkov light detection...Go to contribution page
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Dr Olivia Enriquez-Rivera (Instituto de Geofisica, UNAM)01/08/2015, 15:30The High Altitude Water Cherenkov Observatory (HAWC) is an air shower array located near the volcano Sierra Negra in Mexico. The observatory has a scaler system sensitive to low energy cosmic rays (the geomagnetic cutoff for the site is 8 GV) suitable to perform studies of cosmic ray transients of solar origin such as Ground Level Enhancements (GLEs) and Forbush Decreases (FDs). One important...Go to contribution page
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George Bashindzhagyan (M.V. Lomonosov Moscow State University (RU))01/08/2015, 15:30The goal of the proposed experiment is to check the evidence for a possible solar influence on nuclear decay rates, and to measure any effect quantitatively. Simultaneous decay rate measurements with many identical radioactive sources would allow us to study any possible correlations between their rate changes, and to thus improve the accuracy and reliability of the measurements. Positioning...Go to contribution page
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Prof. Akimichi Taketa (Earthquake Research Institute, University of Tokyo)01/08/2015, 15:30Neutrinos have favorable properties for measuring the elemental composition deep inside the earth's interior. First, they propagate a long distance almost undisturbed through the earth due to their weak interactions with matter. Secondly, neutrino oscillations in matter are sensitive to the electron density of the medium traversed by them. Therefore, neutrinos can be used for a probe to...Go to contribution page
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Renat Sibatov (Ulyanovsk State University)01/08/2015, 15:30Blasi and Amato [1] studied diffusive propagation of cosmic rays (CR) in the Galaxy, taking into account spatial and temporal distribution of supernova remnants, diffusion in halo and spallation of nuclei. In frames of this model based on classic diffusion equation, they calculated the energy spectrum, chemical composition and anisotropy of galactic cosmic rays observed at Earth. They carried...Go to contribution page
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Patrick Yves Sizun (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))01/08/2015, 15:30The Cherenkov Telescope Array (CTA) will be the next generation ground-based gamma-ray instrument. It will be made up of approximately 100 telescopes of at least three different sizes, from 4 to 23 meters in diameter. The previously presented prototype of a high speed data acquisition (DAQ) system for CTA has become concrete within the NectarCAM project, one of the most challenging camera...Go to contribution page
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Prof. Huanyu JIA (School of Physical Science and Technology, Southwest Jiaotong University)01/08/2015, 15:30Cosmic ray particle acceleration in supernovae is expected to occur. A protoneutron star is formed in the aftermath of the supernova explosion of a massive star. Therefore, the study of properties and structure of protoentron stars has great implications for investigating the origin and acceleration of cosmic rays. Considering the baryon octet which comprises of the least massive baryons and...Go to contribution page
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Dr Nicolas PICOT-CLEMENTE (Institute for Physical Science and Technology, University of Maryland)01/08/2015, 15:30The isotopes $^{2}$H and $^{3}$He in the cosmic radiation are mainly secondary products from interactions of primary cosmic rays in the interstellar medium. Secondary-to-primary ratios give important information on processes that occurred during the propagation of cosmic rays, independent of the unknown source spectrum. Boron-to-Carbon ratio data have been primarily used to study cosmic-ray...Go to contribution page
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Elisa Prandini (University of Geneva)01/08/2015, 15:30The MAGIC telescopes are an array of two imaging atmospheric Cherenkov telescopes (IACTs) studying the gamma ray sky at very high-energies (VHE; E>100 GeV). The observations are performed in stereoscopic mode, with both telescopes pointing at the same position in the sky. Differently from the other running IACTs, the MAGIC field of view (FoV) acceptance for hadrons and gamma rays has a complex...Go to contribution page
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Mr Yifeng Wei (University of Science and Technology of China)01/08/2015, 15:30The DArk Matter Particle Explorer (DAMPE) is an orbital experiment which aims at searching dark matter by measuring the spectra of gamma, electron and positron originating from space. The BGO electromagnetic calorimeter (ECAL) is one of the core sub-detectors of DAMPE for energy measurement from 5 GeV to 10 TeV. The Calorimeter consists of 308 BGO crystal bars with the dimension of...Go to contribution page
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Maoyuan Liu, Prof. luobu danzeng (Department of Physics, Science School, Tibet University)01/08/2015, 15:30Owing to the advantages in the wide field of view, high duty cycle and large effective area, ground based high altitude EAS experiments play an important role in studying the high energy gamma ray bursts (GRBs). While shower mode technique provides the most sensitive way in searching for GRBs above 100GeV energy, the single-particle technique can extend the GRBs search energy down to GeV...Go to contribution page
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Luigi Tibaldo (SLAC)01/08/2015, 15:30TARGET is an application specific integrated circuit (ASIC) designed to perform the readout of signals recorded by the photosensors in cameras of very-high-energy gamma-ray telescopes exploiting the imaging of Cherenkov radiation from atmospheric showers. TARGET capabilities include sampling at a high rate (typically 1 GSample/s), digitization, and triggering on the sum of four adjacent...Go to contribution page
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Anatoly Ivanov (Shafer Institute for Cosmophysical Research & Aeronomy)01/08/2015, 15:30We are analysing temporal characteristics of signals from the wide field-of-view (WFOV) Cherenkov telescope detecting extensive air showers (EAS) of cosmic rays (CR) in coincidence with surface detectors of the Yakutsk array. Our aim is to reveal causal relationships between measured characteristics and physical properties of EAS.Go to contribution page
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Daisuke Ikeda (Institute for Cosmic Ray Research, University of Tokyo)01/08/2015, 15:30We are carrying out an R&D project to search for radar echoes from cosmic ray induced extensive air showers. For the verification of the radar echo technique, we have used the electron beam as a pseudo air shower generated by the Electron Light Source (ELS). The radio receivers consist of two wide-band log-periodic antennas and digital receivers, and the transmitter consists of a Yagi antenna....Go to contribution page
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Ke Fang01/08/2015, 15:30The electromagnetic wind of a fast-spinning magnetars has been proposed as a site for cosmic rays acceleration from very high energies (VHE) to ultrahigh energies (UHE). We show how high-energy neutrinos would be produced in these scenarios, when the accelerated particles interact with the baryons of the expanding supernova ejecta and the radiation fields in the pulsar wind nebula. In this...Go to contribution page
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Laura Valore (University of Naples / INFN Naples)01/08/2015, 15:30The Atmospheric Research for Climate and Astroparticle Detection (ARCADE) project aims to a better comprehension of the limits of applicability, systematics and possible enhancements of the typical techniques used for the measurement of the aerosol attenuation profiles of UV light in cosmic rays and gamma rays experiments. Aerosols are indeed the most variable component in the atmosphere on a...Go to contribution page
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Dr Laura Valore (University of Naples / INFN Naples)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) is the next generation of ground-based very high energy gamma-ray instruments; the facility will be organized in two arrays, one for each hemisphere. The atmospheric calibration of the CTA telescopes is a critical task. The atmosphere affects the measured Cherenkov yield in several ways: the air-shower development itself, the variation of the Cherenkov...Go to contribution page
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Dr Alexey Bakaldin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 31 Kashirskoe shosse, 115409 Moscow, Russia)01/08/2015, 15:30The present contribution is dedicated to the investigation of background conditions for cosmic ray ion ionization state measurements in MONICA experiment. The future experiment MONICA is aimed to study the cosmic ray ion fluxes from H till Ni in energy range 10-300 MeV/n. The experiment main scientific objective is the measurement of ion ionization state, as well as elemental, isotope...Go to contribution page
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Dorota Sobczynska (University of Lodz)01/08/2015, 15:30A system of Imaging Air Cherenkov Telescopes (IACTs) can be triggered by hadronic events containing Cherenkov light from at most two electromagnetic subcascades, which are products of the single $\pi^0$ decay. The recorded images of those showers have a similar shape to the primary $\gamma$-ray events. Therefore, they are hardly reducible background for observations using IACTs. In this...Go to contribution page
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Michael Daniel01/08/2015, 15:30The Cherenkov Telescope Array (CTA) will be the next generation ground based observatory in very high energy gamma ray astronomy. The facility will achieve a wide energy coverage, starting from a threshold of a few tens of GeV up to hundreds of TeV by utilising several classes of telescopes, each optimised for different regions of the gamma-ray spectrum. The required energy resolution of...Go to contribution page
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Anatoly Petrukhin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))01/08/2015, 15:30The large-scale coordinate-tracking detector TREK for registration of near-horizontal muon flux generated by ultrahigh energy primary particles is being developed in MEPhI. Detector is based on the multiwire drift chambers from the neutrino experiment at the IHEP U-70 accelerator, their key advantages are a large effective area (1.85 m2), good coordinate and angular resolution with a small...Go to contribution page
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Satyendra Thoudam (Radboud University)01/08/2015, 15:30The LOFAR Radboud Air Shower Array (LORA) is an array of 20 plastic scintillation detectors installed in the center of the LOFAR radio telescope in the Netherlands to measure extensive air showers induced by cosmic rays in the Earth's atmosphere. The primary purpose of LORA is to trigger the read-out of the LOFAR radio antennas to record radio signals from air showers, and to assist the...Go to contribution page
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Prof. Harm Moraal (North-West University)01/08/2015, 15:30Ground-level enhancements (GLEs) of the intensity of cosmic rays are an inherent part of large cosmic-ray storms. The GLE of 29 September 1989 was one of the largest of 71 solar energetic particle events observed by neutron monitors on Earth. It was smaller than the record-breaking GLE 5 of 23 February 1956, but by some measures it was larger than GLE 69 of 20 January 2005. It is also the...Go to contribution page
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Gudlaugur Johannesson (Science Institute, University of Iceland)01/08/2015, 15:30A study of interstellar emissions from radio to high-energy gamma rays (> 100 MeV) arising from CR interactions with interstellar gas, radiation and magnetic fields is currently the best way to gain insight into the physics of CRs throughout the Milky Way. To properly utilize the high quality data of modern instruments such as the Fermi-LAT, a detailed model of these interstellar emissions is...Go to contribution page
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Mr Petr Gololobov (ShICRA of SB RAS)01/08/2015, 15:30We present the results of spectrum analysis of the event of ground level enhancement of solar cosmic rays on October 28, 2003 (GLE65) in the widest range of energies. The energy spectrum of cosmic rays is studied on the basis of direct measurements of solar particle fluxes aboard the ACE, GOES and WIND spacecraft, as well as by data recorded by the worldwide neutron monitor network. In the...Go to contribution page
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Charles Timmermans (Dept. Exptl. High-Energy Physics-High Energy Physics Institute)01/08/2015, 15:30High-energy neutrino astronomy will probe the working of the most violent phenomena in the Universe. The GRAND (Giant Radio Array for Neutrino Detection) project consists of an array of 200 000 radio antennas deployed over a total area of 200 000 km2 in a mountainous site. The array aims at detecting high energy neutrinos (E>10^16 eV) via the measurement of air showers induced by the decay in...Go to contribution page
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Dr Leonid Tkachev (JINR, Dubna)01/08/2015, 15:30
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Mr Mohammad Hussein (University of Manitoba)01/08/2015, 15:30We explore the influence of magnetic turbulence on the transport of energetic particles, mainly cosmic rays, by using test-particle simulations. We compute parallel and perpendicular diffusion coefficients for two-component turbulence, isotropic turbulence, a model based on Goldreich-Sridhar scaling, noisy reduced magneto-hydrodynamic turbulence, and a noisy slab model. We have shown that for...Go to contribution page
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Hisanori Takamaru (Chubu University)01/08/2015, 15:30To find a possible correlation between the muon / neutron counting rate and simultaneously registered solar activity, by using machine learning, we propose the semi-automatic forecasting algorithm for several physical process, e.g. Forbush decrease, GLE, and so on. These correlations have a complex form defined by the spatially and temporally ordered set of events at world-wide monitor...Go to contribution page
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Dr John E Ward (IFAE)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) is a future ground-based observatory (with two locations, in the northern and southern hemispheres) that will be used in the study of the very-high-energy gamma-ray sky. CTA observations will be proposed by external users or initiated by the observatory, with the resulting measurements being processed by the CTA observatory and the reduced data made...Go to contribution page
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Prof. Marcelo Leigui de Oliveira (UFABC)01/08/2015, 15:30MonRAt is a compact telescope designed to detect photons generated by ultra-high energy cosmic ray particles in the atmosphere. The telescope is composed of a 64-pixel multianode photomultiplier tube in the focus of a parabolic mirror. Ultraviolet-passing filters are positioned in front of the photocathode to select photons within the wavelength range of nitrogen fluorescence. The data...Go to contribution page
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Mr Sven Schoo (KIT)01/08/2015, 15:30KCDC is a web-platform for distributing air-shower events measured by the KASCADE and KASCADE-Grande experiments. In addition to the data, an extensive documentation on the experiments and the published observables is provided to ease the use of the data in analyses performed by the cosmic ray community. Since the experiments have been funded by tax-payers, access is not restricted to...Go to contribution page
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Dr Vladimir Ryabov (P.N. Lebedev Physical Institute, RAS, Moscow, Russia)01/08/2015, 15:30The results of the test data collection run held at the new shower installation of the Tien Shan mountain cosmic ray station are discussed. At time, the system consists of $\sim$100 detector points built on the basis of plastic scintillator plates with sensitive area of 0.25 m$^2$ and 1 m$^2$. In the core region these detectors form two rather dense carpets with the 3 m$\times$4 m uniform...Go to contribution page
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Fabian Schüssler (CEA)01/08/2015, 15:30The Cherenkov Telescope Array (CTA) observatory will be one of the largest ground-based very-high-energy gamma-ray observatories. The on-site analysis will perform a first CTA scientific analysis of data acquired from the array of telescopes, in both northern and southern sites. The On-Site Analysis has two pipelines: the Level-A pipeline (also known as Real-Time Analysis, RTA) and the...Go to contribution page
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Alexander Stasik (DESY)01/08/2015, 15:30The current operation of online programs for sending follow-up alerts to optical, X-ray and gamma-ray telescopes shows the feasibility of neutrino-triggered multi-messenger astronomy. Building on the experience of these programs, we generalize the approach and merge them into a combined generic framework. The upgrade consists of a single event stream selected at the South Pole and transmitted...Go to contribution page
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Dr Masaaki Hayashida (Institute for Cosmic-Ray Research, University of Tokyo)01/08/2015, 15:30The Large Size Telescope (LST) of the Cherenkov Telescope Array (CTA) is designed to achieve a threshold energy of 20 GeV. The LST optics is composed of one parabolic primary mirror 23 m in diameter and 28 m focal length. The reflector dish is segmented in 198 hexagonal, 1.51 m flat to flat mirrors. The total effective reflective area, taking into account the shadow of the mechanical...Go to contribution page
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Atsushi Iyono (Okayama University of Science)01/08/2015, 15:30Observation experiments of Cosmic rays have been carried out since 1996 in Okayama University of Science, the primary energy spectrum in energy range of 10^16eV to 10^19.5eV has been obtained by using a mini array consist of 8 plastic scintillation counters and an extensive air shower (EAS) time structure since 2006. And, in order to improve the energy resolution of the mini array...Go to contribution page
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Prof. Anatoly Erlykin (P.N.Lebedev Physical Institute)01/08/2015, 15:30The dependence of the cosmic ray intensity on Galactocentric distance is known to be much less rapid than that of the thought-to-be sources: supernova remnants. This is an old problem ('the radial gradient problem') which has led to a number of possible 'scenarios'. Here, we use recent data on the supernova remnant's radial distribution and correlate it with measured HII electron temperature...Go to contribution page
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Mrs GRACE IHONGO (UNIVERSITY OF ABERDEEN)01/08/2015, 15:30The relationship between galactic cosmic rays and solar wind is investigated using an extended time- dependent and anisotropic force field model, where galactic cosmic rays flux is found to be related to the solar wind speed through the local interstellar spectrum and a modulation parameter. Galactic cosmic ray flux calculated at 1au within the energy range (0.2 – 88)GeV using the model is...Go to contribution page
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Lev Timofeev (SHICRA SB RAS)01/08/2015, 15:30This report presents an observation method of Cherenkov light from extensive air showers (EAS) generated by cosmic rays (CRs) above 1016 eV and preliminary observations. The interest in Cherenkov light differential detectors of EAS is caused by the possibility to measure the depth of cascade maximum, Xmax, and/or the shower age via angular and temporal distributions of the Cherenkov signal. In...Go to contribution page
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Dr Alejandro Lara (Instituto de Geofisica, UNAM)01/08/2015, 15:30We present preliminary images of the sun shadow from data collected by the High Altitude Water Cherenkov Observatory (HAWC) during 2013 and 2014. HAWC is an air shower array located in the central region of Mexico that observes TeV cosmic rays at a rate of about 10 kHz. The magnetic field of the solar corona is very difficult to measure directly. However indirect observations of the solar...Go to contribution page
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Vera Georgievna Sinitsyna (P.N. Lebedev Physical Institute)01/08/2015, 15:30The investigation of VHE gamma-ray sources by any methods, including mirror Cherenkov telescopes, touches on the problem of the cosmic ray origin and, accordingly, the role of the Galaxy in their generation. The SHALON observations have yielded the results on Galactic supernova remnants (SNR) of different ages. Among them are: the shell-type SNRs Tycho's SNR (1572y), Cas A (1680y), IC 443 (age...Go to contribution page
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Alessandro Carosi (INAF-ASDC)01/08/2015, 15:30The increasing number of Very High Energy (VHE) sources discovered by the current generation of Cherenkov telescopes made particularly relevant the creation of a dedicated source catalogs as well as the cross-correlation of VHE and lower energy bands data in a multi-wavelength framework. The "TeGeV Catalogue" hosted at the ASI Science Data Center (ASDC) is a catalogue of VHE sources observed...Go to contribution page
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Mr Yoann Genolini (LAPTh)01/08/2015, 15:30PAMELA and, more recently, AMS-02, are ushering us into a new era of greatly reduced statistical uncertainties in experimental measurements of cosmic ray fluxes. In particular, new determinations of traditional diagnostic tools such as the boron to carbon ratio (B/C) are expected to significantly reduce errors on cosmic-ray diffusion parameters, with important implications for astroparticle...Go to contribution page
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Damien DORNIC (CPPM)01/08/2015, 15:30ANTARES, the largest neutrino telescope operating in the Northern Hemisphere, performs multiple analyses in the search for neutrino point-source candidates. In a time-dependent search, the background is drastically reduced, and the point-source sensitivity improved, by selecting a narrow time window around the assumed neutrino production period. Blazars are particularly attractive potential...Go to contribution page
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Ms Jeongmin Park (Kyunpook National University)01/08/2015, 15:30It is important to measure the cosmic ray spectrum to understand the origin, acceleration and propagation mechanisms of high-energy cosmic rays. The Cosmic Ray Energetics And Mass (CREAM) experiment will be launched in 2015 to the International Space Station (ISS) to measure cosmic ray elemental spectra up to energies beyond the reach of balloon instruments. The Top Counting Detector (TCD) and...Go to contribution page
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Prof. RAJIV KUMAR (GOVERNMENT PENCH VALLEY POST GRADUATE COLLEGE PARASIA)01/08/2015, 15:30ABSTRACT: The purpose of this research paper is to develop efficient sites array of using CRAYFIS(Cosmic Rays Found in smart phone)which gives real time radiation weather map on temporal and spatial scales. It is suggested how a map can be prepared in terms of exact azimuth zenith and altitude angles so that the direction of the cosmic rays sources could be estimated.Go to contribution page
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Prof. Juan A. Garzon (LabCAF - Univ. Santiago de Compostela)01/08/2015, 15:30Cosmic rays, coming either from the Sun, our galaxy or other galaxies, are permanently arriving to the Earth after having been affected by the intergalactic magnetic fields, the solar activity and the terrestrial atmosphere, being a very valuable source of information of our surrounding Universe. Since the last year, a new RPC-based tracking detector, TRAGALDABAS (acronym of "TRAsGo for...Go to contribution page
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Stanislav Stefanik (Institute of Particle and Nuclear Physic, Charles University in Prague)01/08/2015, 15:30We report on an unidentified gamma-ray signal found in the region around the BL Lac object 1ES 0229+200. It was recognized serendipitously in our analysis of 6.2 years of Fermi-LAT data at a distance less than $3^\circ$ away from the blazar. The observed excess of counts manifests itself as an unexpected local maximum in the test statistic map. Although several Fermi-LAT sources have been...Go to contribution page
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Dr Andrzej Śmiałkowski (University of Lodz)01/08/2015, 15:30Based on shower simulations we show that the electron distribution $ f(\theta,r,E;s) $, describing fully the fraction of electrons with energy $E$,at shower age $s$, at the distance from the axis $r$ and having angle $\theta$ is the same for any shower, independently of the primary energy or mass and shower fluctuations. We find an analytic description of this function fitting it best in...Go to contribution page
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Yoshinori Sasai (Nagoya University)01/08/2015, 15:30SciCRT (SciBar Cosmic Ray Telescope) is a new project to observe cosmic rays via a full active scintillator tracker. Our aim is to detect high energy solar neutrons produced by the interaction between accelerated ions and the solar atmosphere and to observe the anisotropy of galactic cosmic-ray muons. In the previous ICRC in Brazil, we reported that the detector has been installed at Mt....Go to contribution page
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Prof. ANDRES SANDOVAL (INSTITUTO DE FISICA UNAM)01/08/2015, 15:30The initial concept of the HAWC Observatory, an air shower array of 300 water Cherenkov detectors on the slope of Sierra Negra in Mexico, has been successfully carried out with the completion of construction in December 2014. The HAWC detector, located 4100 m above sea level, has begun continuous operation surveying the sky for cosmic rays and gamma rays between 100 GeV and 100 TeV. The...Go to contribution page
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Igor Yashin (National Research Nuclear University MEPhI - Moscow), Juan A. Garzon (Univ.)01/08/2015, 15:30Cosmic Rays research is of great interest both because it improves our knowledge of how Cosmic Rays are produced and accelerated and because it provides a great deal of information about the interstellar and interplanetary media, the solar activity and the Earth’s surroundings. In order to deepen our understanding of several phenomena related with the cosmic rays, two complementary...Go to contribution page
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Dr Simona Toscano (Vrije Universiteit Brussel (VUB); University of Geneva)01/08/2015, 15:30Imaging Atmospheric Cherenkov Telescopes (IACTs) are ground-based instruments devoted to the study of very high energy gamma-rays coming from space. The detection technique consists in observing images created by the Cherenkov light emitted when gamma rays, or more in general cosmic rays, propagate in the atmosphere. While in case of protons or gammas the images present a filled and more or...Go to contribution page
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Juan Cortina (IFAE)01/08/2015, 15:30MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes (IACT) that observe Very High Energy (VHE) gamma ray sources. The PMTs in their cameras are designed to operate under moonlight, but they are limited to Moon phases below 93% (300 Moon hours per year), as they can get damaged if the amount of light they receive is too high. As a result, they cannot be used 2-3 days before and...Go to contribution page
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Dr Yury Balabin (Polar geophysical institute)01/08/2015, 15:30Low energy gamma-rays background in the polar atmosphere (Apatity (67° N) and Barenzburg (78° N)) is studied. Continuous measurements of gamma-ray differential spectrum in Apatity and integral one in Barenzburg are conducted since 2009. There is a seasonal variation of gamma-ray flux falling down from upper hemisphere. The same variations in thermal neutron and low energy charged particle...Go to contribution page
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Ruben Lopez-Coto (Institut de Fisica d'Altes Energies - IFAE)01/08/2015, 15:30In the last few years the Fermi-LAT instrument has detected GeV gamma-ray emission from several novae. Such GeV emission can be interpreted in terms of inverse Compton emission from electrons accelerated in the shock or in terms of emission from hadrons accelerated in the same conditions. The latter might reach much higher energies and could produce a second component in the gamma-ray spectrum...Go to contribution page
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Andrew Romero-Wolf (Jet Propulsion Laboratory, California Institute of Techology), Stephanie Wissel (UCLA)01/08/2015, 15:30Recent comparison studies of cosmic ray arrival directions and active galactic nuclei have resulted in evidence for correlation with weak significance against an isotropic source distribution. In this paper we address the question of what sample size is needed to measure a highly statistical significant correlation to a parent source catalog. We compare several scenarios for the directional...Go to contribution page
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Stijn Buitink (Vrije Universiteit Brussel (VUB))01/08/2015, 15:30The radio emission from air showers is used to accurately reconstruct the depth of the shower maximum (Xmax). We present a method based on using the full two-dimensional radiation profile as observed on the ground. While the density of shower particles reaching the ground is usually described with a 1D lateral distribution function, the intensity of the radio pulse is a complex function of...Go to contribution page
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Dr Alexander Borisov (P.N.Lebedev Physical Institute, RAS, Moscow, Russia)01/08/2015, 15:30The project of a new experiment is proposed in order to obtain direct data on the value of production cross section of charmed particles in interactions of cosmic ray hadrons on lead nuclei at energy $E \sim 75$ TeV in the forward kinematic cone and to determine a contribution of prompt muons to the overall flow of superhigh energy muons within EAS at mountain altitudes. The proposed...Go to contribution page
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Markus Ahlers01/08/2015, 16:30I will discuss the recent observation of TeV to PeV neutrinos by the IceCube Cherenkov telescope in the context of multi-messenger astronomy. The corresponding energy range of hadronic gamma-rays is not directly accessible by extragalactic gamma-ray astronomy due to interactions with cosmic radiation backgrounds. Nevertheless, the isotropic sub-TeV gamma-ray background observed by Fermi-LAT...Go to contribution page
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Simona Murgia (University of California, Irvine)01/08/2015, 17:00The center of the Milky Way is predicted to be the brightest region in the gamma-ray sky produced by dark matter annihilation or decay. In recent years, claims have been made of an excess consistent with a dark matter annihilation signal in the data collected by the Fermi Large Area Telescope towards the Galactic center. These results are intriguing, however the complexity involved in modeling...Go to contribution page
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Jörg Hörandel (Ru Nijmegen/Nikhef)01/08/2015, 17:30With LOFAR we measure the properties of the radio emission of extensive air showers with high precision in the frequency range 30 to 240 MHz. This allows us to establish key features, such as the lateral density distribution of the radio signals, the shape of the shower front, and the polarization of the radio signal. We obtained the first quantitative measurements in the frequency range...Go to contribution page
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Richard Mewaldt (Caltech)01/08/2015, 18:00Measurements with ACE, STEREO, and GOES show that the number of large solar energetic particle (SEP) events in solar cycle 24 is reduced by a factor of ~2 compared to this point of cycle 23, while the fluences of >10 MeV/nuc ions from H to Fe are reduced by factors ranging from ~4 to ~10. We investigate the origin of these cycle-to-cycle differences by evaluating possible factors that...Go to contribution page
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389. Solar Energetic Particles and Solar Events - Lessons Learned from Multi-Spacecraft ObservationsChristina Cohen (Caltech)03/08/2015, 09:00Never before has the heliosphere and the Sun been so carefully monitored by so many spacecraft; near 1 AU at multiple longitudes and at other radial distances. The instrumentation on these spacecraft are continually observing solar activity and measuring the characteristics of solar energetic particle (SEP) events, providing a wealth of information on the acceleration and transport of SEPs. ...Go to contribution page
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Elizabeth Hays (NASA GSFC)03/08/2015, 09:45Gamma-ray astronomy reveals the sites and mechanisms of powerful astrophysical accelerators and tests the limits of our understanding of matter and energy in the Universe. Current instruments, both in space and on the ground, are deepening the view of the gamma-ray sky, broadening spectral coverage, and capturing variability and transient activity in a rich variety of astrophysical objects....Go to contribution page
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Maike Kunnas (University of Hamburg)03/08/2015, 11:00For observation of extensive air showers from gamma rays and cosmic rays, shower front sampling arrays (non-imaging technique or timing-arrays) provide good core position, energy and angular resolution while covering a large area and posessing a wide field of view, yielding good sensitivity at the highest energies. However, the gamma-hadron separation power of this method is only poor compared...Go to contribution page
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Dr Matthew Wood (SLAC)03/08/2015, 11:00The dwarf spheroidal satellite galaxies of the Milky Way are some of the most dark-matter-dominated objects known. Due to their proximity, high dark matter content, and lack of astrophysical backgrounds, dwarf spheroidal galaxies are widely considered to be among the most promising targets for the indirect detection of dark matter via gamma rays. Here we report on gamma-ray observations of...Go to contribution page
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81. Filament Eruptions Outside of Active Regions as Sources of Large Solar Energetic Particle EventsStephen Kahler (Air Force Research Laboratory)03/08/2015, 11:00Gradual solar energetic (E > 10 MeV) particle (SEP) events are produced in shocks driven by fast CMEs, which are nearly always spatially associated with ARs. Several cases of SEP events associated with CMEs originating in large filament eruptions (FEs) from outside ARs have previously been known, but four more such cases from solar cycles 23 and 24 have been described by Gopalswamy et...Go to contribution page
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Dr Richard Dallier (SUBATECH - Ecole des Mines de Nantes - CNRS/IN2P3 - Université de Nantes)03/08/2015, 11:00Since 2003, the Nançay Radio Observatory hosts the CODALEMA experiment, dedicated to the radio detection of cosmic ray induced extensive air showers. After several instrumental upgrades, CODALEMA is now composed of: - 57 self-triggering radio detection stations working in the 20-250 MHz band, spread over 1 km$^2$; - an array of 13 scintillators acting as a particle detector; - a compact...Go to contribution page
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Dr Barbara Patricelli (University of Pisa, INFN Pisa and Astronomy Institute of UNAM)03/08/2015, 11:00The blazar Mrk 421 is one of the closest, brightest and fastest varying source in the extragalactic X-ray/TeV sky. In the last years, many multiwavelength campaigns have been carried out to study the correlation between the VHE $\gamma$-ray and X-ray fluxes of this source and, although the activity in these two energy ranges seems to be correlated in many observations, no conclusive results...Go to contribution page
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Mr Thomas Murach (Humboldt-Universität zu Berlin)03/08/2015, 11:15The H.E.S.S. experiment entered its second phase with the addition of a new, large telescope called CT5 that has been added to the centre of the existing array of four smaller telescopes. Because of its larger mirror area the new telescope is able to detect fainter air showers, thereby lowering the energy threshold of the array from O(100 GeV) down to a few tens of GeV. Due to the power law...Go to contribution page
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Joaquim Palacio (Institut de Física d'Altes Energies)03/08/2015, 11:15We present the results on Dark Matter searches from the Perseus galaxy cluster observations with the MAGIC Telescopes. MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes located in the Canary island of la Palma, Spain. Galaxy clusters are the largest known gravitationally bound structures in the Universe, with masses of ~10^15 Solar Masses. There is strong evidence that galaxy...Go to contribution page
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Dr Andreas Klassen (University of Kiel)03/08/2015, 11:15Solar electron spike events are a special subclass of near-relativistic electron events characterized by their short duration, symmetric time profile and their strongly anisotropic pitch angle distribution. All previous studied spike events until now were observed by a single spacecraft only. We present for the first time measurements of an electron spike event that was observed...Go to contribution page
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Alessandro Carosi (INAF-ASDC)03/08/2015, 11:15Gamma-ray burst (GRBs) are primary targets for all modern IACT telescope. The MAGIC collaboration has identified the detection of GRBs in the VHE regime as one of its multi-year key observational programs (KOP). However, the transient and unpredictable nature of GRBs makes pointing and rapid follow-up observations to observe the prompt emission phase difficult for large ground-based Cherenkov...Go to contribution page
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Mr Christian Glaser (RWTH Aachen University)03/08/2015, 11:15At the Auger Engineering Radio Array (AERA) of the Pierre Auger Observatory, we have developed a new method to measure the total amount of energy that gets transferred from the primary cosmic ray into radio emission. We find that this radiation energy is itself an estimator of the cosmic ray energy. It scales quadratically with the cosmic-ray energy, as expected for coherent emission. We...Go to contribution page
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Anna Nelles (Radboud University Nijmegen)03/08/2015, 11:30The international LOFAR radio telescope has been used now for four years to detect air showers. Its high antenna density has allowed us to measure the subtle features of the radio emission of air showers. Together with air shower simulations, these data have been used to model the detected signals. The not rotational symmetric footprint is described by an analytical function with as few as...Go to contribution page
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Josh Cardenzana03/08/2015, 11:30The current standards for estimating the background contribution in IACT data analysis are the ring background model and the reflected region methods. However, these two techniques are poorly suited for analyses of sources with extensions comparable to the detector’s field of view (greater than ~1°). Nearby pulsar wind nebulae, supernova remnants interacting with molecular clouds, and dark...Go to contribution page
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Valentin lefranc (CEA)03/08/2015, 11:30The presence of dark matter in the Universe is nowadays widely supported by a large body of astronomical and cosmological observations. One of the best target to look for dark matter self-annihilation into very high energy gamma-rays is the Galactic center region. A search for such emission is performed with the ground-based H.E.S.S. array of Cherenkov telescopes toward the central 150 parsecs...Go to contribution page
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Elisabetta Bissaldi (INFN Bari)03/08/2015, 11:30After almost 7 years of science operation, the Fermi mission has brought great advances in the study of GRBs. Over 1500 gamma-ray bursts (GRBs) have been detected by the Gamma-ray Burst Monitor (GBM), and more than 100 of these are also detected by the Fermi Large Area Telescope (LAT) above 30 MeV. We will give an overview of these observations, presenting the common properties in the GRB...Go to contribution page
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Dr Nina Dresing (IEAP, University of Kiel, Germany)03/08/2015, 11:30The Solar Electron and Proton Telescope (SEPT) carried on board both of the STEREO spacecraft provides four viewing directions to measure energetic electron and ion anisotropies. Two sectors cover the direction of the nominal magnetic field spiral in the ecliptic, with one looking towards the Sun and the other away from the Sun (Anti-Sun). The other two telescopes view towards north and south,...Go to contribution page
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Koji Noda (Max-Planck-Institute for Physics)03/08/2015, 11:45The blazar Mrk501 is among the brightest X-ray and TeV sources in the sky, and among the few sources whose (radio to VHE gamma-rays) Spectral Energy Distributions can be characterized by current instruments by means of relatively short observations (minutes to hours). In 2013, we organized an extensive multi-instrument campaign involving the participation of Fermi LAT, MAGIC, VERITAS, F-GAMMA,...Go to contribution page
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Richard Leske (California Institute of Technology)03/08/2015, 11:45Solar energetic particle (SEP) pitch angle distributions are shaped by the competing effects of magnetic focusing and scattering as the particles travel through interplanetary space. Therefore, measurements of SEP anisotropies provide insight into particle transport and can probe interplanetary conditions at remote locations from the observer. The Low Energy Telescopes (LETs) onboard the...Go to contribution page
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Gia Trinh (KVI-CART, University of Groningen, The Netherlands)03/08/2015, 11:45Energetic cosmic rays impinging on the atmosphere create a particle avalanche called an extensive air shower. In the leading plasma of this shower electric currents are induced that generate radio waves which have been detected with LOFAR, a large array of simple antennas primarily developed for radio-astronomical observations. LOFAR has observed air showers under fair-weather conditions...Go to contribution page
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Prof. Philip Von Doetinchem (University of Hawaii at Manoa)03/08/2015, 11:45The precise measurement of cosmic ray antiparticles serves as important means for identifying the nature of dark matter. Recent years showed that identifying the nature of dark matter with cosmic ray positrons and higher energy antiprotons is difficult, and has lead to a significantly increased interest in cosmic ray antideuteron searches. Antideuterons may also be generated in dark matter...Go to contribution page
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Sean Griffin03/08/2015, 11:45The presence of moonlight is usually a major limiting factor for Imaging Atmospheric Cherenkov Telescopes due to the high sensitivity of the camera photomultiplier tubes (PMTs). In their standard configuration, the extra noise limits the sensitivity of the experiment to gamma-ray signals and the higher PMT currents also accelerates PMT aging. Since fall 2012, observations have been carried out...Go to contribution page
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M. Wiedenbeck (JPL/Caltech)03/08/2015, 12:00Impulsive solar energetic particle (ISEP) events are understood to involve particle acceleration in relatively compact regions of the solar corona where reconnection causes the release of magnetic energy and produces both turbulence and larger scale motions that can interact with and accelerate charged particles. In many cases the longitudinal spread of ISEPs observed at 1 AU is relatively...Go to contribution page
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Adrian Biland (Eidgenossische Technische Hochschule Zurich (ETH))03/08/2015, 12:00The First G-APD Cherenkov Telescope (FACT) is pioneering the usage of solid state photosensors (G-APD, also known as SiPM). The 1440 pixel camera is installed in a 10m$^2$ refurbished HEGRA telescope on the Canary Island La Palma. Physics data-taking with FACT started in October 2011, few hours after installation of the camera. Since Summer 2012, FACT is operated remotely without the...Go to contribution page
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Dirk Lennarz (Georgia Tech)03/08/2015, 12:00We will present the first results of HAWC in searching for VHE gamma-ray emission from GRBs reported by Fermi, Swift and other satellite. The HAWC gamma-ray observatory is operating in central Mexico at an altitude of 4,100 m a.s.l. With an instantaneous field of view of approximately 2 sr and over 95% duty cycle (up time fraction), HAWC is an ideal detector to perform ground based gamma-ray...Go to contribution page
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Arthur Corstanje (Radboud University Nijmegen)03/08/2015, 12:00The LOFAR radio telescope located in the north of the Netherlands offers a high density of omnidirectional radio antennas. In its central part, it consists of over 1100 dual-polarized antennas in an area of 12 km^2, of which nearly 300 are placed in the central ring of 320 m diameter. LOFAR is therefore well suited for detailed studies of the radio signal from air showers, and has been...Go to contribution page
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John Carr (CPPM/IN2P3/CNRS)03/08/2015, 12:00The existence of dark matter (DM) as the dominant contribution to the gravitational mass of the Universe is by now well established but the corpuscular nature of DM is at present unknown. Multiple hypotheses endure as to the character of DM and for the most popular DM models the CTA has a unique chance of discovery. The principal target for DM searches with CTA is the Galactic Centre (GC)...Go to contribution page
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162. 4.5-year simultaneous multi-wavelength observation of Mrk 421 in ARGO-YBJ and Fermi overlap eraSilvia Vernetto (Istituto Nazionale di Astrofisica)03/08/2015, 12:15As one of the most active blazars, Mrk421 is an excellent candidate for the study of the physical processes within the jets of AGN. Here we report on the extensive multi-wavelength observations of Mrk 421 over 4.5 years, from 2008 August to 2013 February. This source was simultaneously monitored by several experiments at different wavelengths: the ARGO-YBJ detector at gamma-ray energies above...Go to contribution page
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Brenda Dingus (Los Alamos National Lab)03/08/2015, 12:15The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a wide field-of-view observatory sensitive to 100 GeV – 100 TeV gamma-rays and cosmic-rays. The HAWC observatory is also sensitive to diverse indirect searches for dark matter annihilation, including annihilation from extended dark matter sources, the diffuse gamma-ray emission from dark matter annihilation, and gamma-ray...Go to contribution page
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Prof. Wolfgang Dröge (Julius-Maximilians Universität Würzburg)03/08/2015, 12:15During August 2010 a series of solar particle events was observed by the two STEREO spacecraft as well as by near-Earth spacecraft. The events, occuring at the 7th, 14th and 18th of August, were originating from active regions 11093 and 11099. We combine in-situ and remote-sensing observations with predictions from our model of threedimensional anisotropic particle propagation in order to...Go to contribution page
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Julian Sitarek (University of Łódź)03/08/2015, 12:15MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes located in the Canary island of La Palma, Spain. During summer 2011 and 2012 it underwent a major upgrade. The main subsystems upgraded were the MAGIC-I camera and its trigger system and the readout system of both telescopes. We use observations of the Crab Nebula taken at low and medium zenith angles to assess the key...Go to contribution page
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Dmitriy Kostunin (KIT)03/08/2015, 12:15Since its commissioning in autumn 2012, Tunka-Rex, the radio extension of the air-Cherenkov detector Tunka-133, performed two years of air shower measurements. Currently the detector consists of 44 antennas, each connected to air-Cherenkov and scintillator detectors, respectively, placed in the Tunka valley, Siberia. Triggered by these detectors, Tunka-Rex measures the radio signal of...Go to contribution page
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Mr Armando di Matteo (INFN and University of L'Aquila)03/08/2015, 14:00We present a combined fit of both flux and composition of ultra-high energy cosmic rays as measured by the Pierre Auger Observatory. The fit has been performed for energies above $5{\times}10^{18}$ eV, the region of the all-particle spectrum above the so-called ``ankle'' feature. A simple astrophysical model has been adopted, consisting of identical sources, injecting nuclei with a rigidity...Go to contribution page
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1091. Extension of the measurement of the proton-air cross section with the Pierre Auger ObservatoryDr Ralf Matthias Ulrich (KIT - Karlsruhe Institute of Technology (DE))03/08/2015, 14:00With hybrid data of the Pierre Auger Observatory it is possible to measure the cross section of proton-air collisions at energies far beyond the reach of the LHC. Since the first measurement by the Pierre Auger Collaboration the event statistics has increased significantly. The proton-air cross section is now estimated in the two energy intervals in $\lg(E/\mathrm{eV})$ from 17.8 to 18.0 and...Go to contribution page
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Javier Barrios Martí (IFIC - CSIC)03/08/2015, 14:00A search for cosmic neutrino point-like sources using the ANTARES and IceCube neutrino telescopes over the Southern Hemisphere is presented. The ANTARES data was collected between January 2007 and December 2012, whereas the IceCube data ranges from April 2008 to May 2011. Clusters of muon neutrinos over the diffusely distributed background have been looked for by means of an unbinned maximum...Go to contribution page
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Tarek Hassan (UCM)03/08/2015, 14:00The Cherenkov Telescope Array (CTA) represents the next generation of ground based instruments for Very High Energy gamma-ray astronomy. It is expected to improve on the sensitivity of current instruments by an order of magnitude and provide energy coverage from 20 GeV to more than 200 TeV. In order to achieve these ambitious goals Monte Carlo (MC) simulations play a crucial role, guiding the...Go to contribution page
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Prof. Harm Moraal (North-West University, South Africa)03/08/2015, 14:00Seventy-one ground-level enhancements (GLEs) in the counting rates of cosmic-ray detectors, due to outbursts of solar energetic particles, have been observed since 1942. It is well-known that these events are associated with solar flares and coronal mass ejections (CMEs), and that they originate primarily from western longitudes on the surface of the sun. In addition, studies of the time...Go to contribution page
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Dr Rasha Abbasi (University of Utah)03/08/2015, 14:15In this work we report on the measurement of the proton-air inelastic cross section $\sigma^{\rm inel}_{\rm p-air}$ using data collected by the Telescope Array (TA) detector. Based on the measurement of $\sigma^{\rm inel}_{\rm p-air}$, the proton-proton cross section $\sigma_{\rm p-p}$ is subsequently inferred using the Glauber Formalism and the QCD-inspired fit of Block, Halzen and Stanev, at...Go to contribution page
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Mr Zachary Zundel (University of Utah)03/08/2015, 14:15Authors: Z. Zundel, for the Telescope Array Collaboration Abstract: The TA Collaboration has completed construction of a low-energy extension to its Middle Drum telescope station. Ten new telescopes were added observing 31-59 degrees in elevation above the original telescopes. A graded array of scintillators with spacing 400-600-1200m is being installed in in the space in front of the...Go to contribution page
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Dr Pierre-Simon MANGEARD (National Astronomical Research Institute of Thailand, Mahidol University)03/08/2015, 14:15Neutron monitors (NMs) are large ground-based instruments for precise time tracking of the variations in the Galactic cosmic ray (GCR) flux at the GeV-range. NMs count the secondary particles (mostly neutrons) issued from the interaction of the cosmic rays in the Earth's atmosphere. The sensitivity to GCR variations depends on the geomagnetic cutoff at the location of measurement as well as on...Go to contribution page
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Stephanie Wissel (UCLA)03/08/2015, 14:15We present an overview of the third flight of the NASA-sponsored long-duration balloon payload known as the Antarctic Impulsive Transient Antenna (ANITA). ANITA-III was launched on December 17, 2014, and terminated January 8, 2015, after about 22 days of successful observations at float. ANITA's primary goal is the search for ultra-high energy neutrinos, but ANITA is also sensitive...Go to contribution page
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Teresa Montaruli (Universite de Geneve (CH))03/08/2015, 14:15The small size telescopes (SSTs), spread over an area of several square km, dominate the CTA sensitivity in the photon energy range from a few TeV to over 100 TeV, enabling for the first time detailed exploration of the very high energy gamma-ray sky. The proposed telescopes are innovative designs providing a wide field of view. Two of them, ASTRI and GCT, are based on dual mirror...Go to contribution page
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Takeshi Okuda (Ritsumeikan University)03/08/2015, 14:30The Telescope Array (TA) Surface particle Detector (TASD) has observed short time bursts of air-shower like events. Correlations were found between these burst events and lightning data. We report on the observed bursts of air-shower like events and their correlation with lightning.Go to contribution page
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Dr Laura Collica (INFN Torino)03/08/2015, 14:30The muon content of extensive air showers is an observable sensitive to the primary composition and to the hadronic interaction properties. We present here different methods which allow us to estimate the muon number at the ground level and the muon production depth by exploiting the measurement of the longitudinal, lateral and temporal distribution of particles in air showers recorded at the...Go to contribution page
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Tino Michael (Nikhef)03/08/2015, 14:30ANTARES is the largest neutrino telescope in the Northern Hemisphere. It has been taking data since 2007. One of the prime objectives is the detection and identification of cosmic neutrino sources in the TeV to PeV energy regime. ANTARES has established excellent pointing resolution for muon neutrinos (0.4 deg). Recently, we achieved good pointing capabilities also for contained cascade events...Go to contribution page
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Helena Kruger (North-West University, Potchefstroom)03/08/2015, 14:30Two small neutron monitors were built in 2002 to intercalibrate the approximately 40 stationary neutron monitors around the world, in order to study the modulation of cosmic rays derived from the resulting differential response functions. Due to electronic development during the past decade, the electronics heads were redesigned in 2011 and due to cheaper and more efficient counter tubes, the...Go to contribution page
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Dr Markus Garczarczyk (DESY)03/08/2015, 14:35CTA, the Cherenkov Telescope Array, is an international project for the next generation ground-based observatory for gamma-ray astronomy in the energy range from 20 GeV to 300 TeV. The sensitivity in the core energy range will be dominated by up to 40 Medium-Sized Telescopes (MSTs). The MSTs, of Davies-Cotton type with a 12m diameter reflector are currently in the prototype phase. A full-size...Go to contribution page
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Alexander Mishev (INRNE-BAS)03/08/2015, 14:45At present the world wide neutron monitor (NM) network provides continuous information about cosmic ray (CR) variations in the vicinity of Earth. In addition, analyses of ground level enhancements (GLEs) are also based on the NM data records. It is important to have precise information for the NM yield function for primary CRs, which is crucial for an analysis of GLEs. Here we present a newly...Go to contribution page
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Colin Baus (KIT - Karlsruhe Institute of Technology (DE))03/08/2015, 14:45The complexity of the development of extensive air showers makes it extremely difficult to study the nature and the sources of cosmic rays at ultra-high energies. The largest uncertainties are related to the modelling of hadronic interactions in the air shower cascade. The sensitivity to the theoretical description is maximised when measurements in the forward phase-space at accelerators are...Go to contribution page
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Dr Tareq AbuZayyad (University of Utah)03/08/2015, 14:45We report on a cosmic ray energy spectrum measurement by the Telescope Array Low-Energy extension (TALE) fluorescence detector (FD). The TALE FD is an air fluorescence detector which is also sensitive to the Cerenkov light produced by shower particles. Low energy cosmic rays, in the PeV energy range, are detectable by TALE as "Cerenkov Events". Using these events, we measure the energy...Go to contribution page
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Carla Bleve (Università del Salento)03/08/2015, 14:45Ultra-high energy neutrinos and photons, with energies above 1 EeV and 10 EeV respectively, can be detected with the Surface Detector array (SD) of the Pierre Auger Observatory. Downward-going neutrinos of all flavours interacting in the atmosphere at zenith angles larger than 60 degrees, as well as upward-going tau neutrinos (''Earth-skimming") can be identified through the broad...Go to contribution page
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Masahiro Teshima (Max-Planck-Institute)03/08/2015, 14:55The Cherenkov Telescope Array (CTA) observatory, will be deployed over two sites in the northern and southern hemispheres. Both sites will be equipped with four Large Size Telescopes (LSTs), which are crucial to achieve the science goals of CTA in the 20-200 GeV energy range. Each LST is equipped with a primary tessellated mirror dish of 23 m diameter, supported by a structure made mainly of...Go to contribution page
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Mr Stefan Coenders (Technische Universität München, Physik-Department)03/08/2015, 15:00The emphasis on point source searches for astrophysical neutrinos has recently been strengthened by the unambiguous detection of high-energy astrophysical neutrinos by IceCube. So far the limited statistics and angular resolution of the relevant analyses do not resolve more than an isotropic emission of astrophysical neutrinos. We present the results of searches for point source neutrino...Go to contribution page
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Juan Carlos Arteaga-Velazquez (Universidad Michoacana)03/08/2015, 15:00Preliminary analyses of air-shower data from the KASCADE-Grande observatory have pointed out a possible discrepancy between the predicted and the measured values of the attenuation length of muons with energy threshold of 230 MeV at ground level in air showers. In particular, the analyses suggest that the measured muon attenuation length, as reconstructed with the constant intensity cut...Go to contribution page
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Igor Petrov (Yu. G. Shafer Institute of Cosmophysical Research and Aeronomy)03/08/2015, 15:00The experimental data on the energy spectrum cosmic rays, obtained from Small Cherenkov Array in Yakutsk on the measurement of Cherenkov radiation in showers with energy 10^15 – 10^18 eV are discussed. The data were obtained by means of continuous array operation since 1994. Found that the spectrum of the all particle in this energy region has a complex shape and cannot be described by a...Go to contribution page
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Prof. Lev Dorman (IZMIRAN (Russia) and Tel Aviv University (Israel))03/08/2015, 15:00Gvozdevsky1 B., Dorman2,3 L., Abunin2 A., Preobrazhensky2 M., Gushchina2 R., Belov2 A., Eroshenko2 E., Dai3 U., Pustil’nik3 L., Yanke2 V. 1- Polar Geophysical Institute, 184209, Firsmana str., 14, Apatity, Russia 2- IZMIRAN, Kalushskoe ave., 4, Troitsk, Moscow, 142190, Russia 3. Israel Cosmic Ray and Space Weather Center with Emilio Segre’ Observatory on Mt. Hermon, affiliated to Tel Aviv...Go to contribution page
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Prof. Dawn Williams (University of Alabama)03/08/2015, 15:15The IceCube Neutrino Observatory has reported a diffuse flux of TeV-PeV astrophysical neutrinos in three years of data. The observation of tau neutrinos in the astrophysical neutrino signal is of great interest in determining the nature of astrophysical neutrino oscillations. Tau neutrinos become distinguishable from other flavors in IceCube at energies above a few hundred TeV, when the...Go to contribution page
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Prof. Huihai He (Institute of High Energy Physics, CAS)03/08/2015, 15:15The Large High Altitude Air Shower Observatory (LHAA-SO) project plans to build a hybrid extensive air shower (EAS) array with an area of 1 km^2 at an altitude of 4410 m asl in Sichuan province, China, aiming for very high energy gamma ray astronomy and cosmic ray physics around the spectrum knees. With a sensitivity of 1% Crab unit, the LHAA- SO will survey the entire northern sky for gamma...Go to contribution page
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Prof. Ding Chen (National Astronomical Observatories, CAS)03/08/2015, 15:15A hybrid experiment has been started by the Tibet ASγcollaboration in Tibet, China, since May 2009. It consists of a burst-detector-grid (YAC : Yangbajing Air- shower Core-array) and the Tibet-III AS array. The Tibet-III array is used to measure the total energy and the arrival direction of air-showers, and YAC-I can observe high-energy shower particles in air-shower cores. By comparing the MC...Go to contribution page
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Paul Evenson (University of Delaware)03/08/2015, 15:15Secular variation of the Earth's geomagnetic fields is well known to change the cutoff rigidity, and thereby the count rate of low latitude neutron monitors. Such changes are generally assumed to be irrelevant to so called atmosphere limited neutron monitors at high latitudes. We have documented a secular change in the count rate of the neutron monitor at Amundsen – Scott Station, located at...Go to contribution page
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Andreas Haungs (Karlsruhe Institute of Technology)03/08/2015, 15:15At a few PeV the energy spectrum of high-energy cosmic rays exhibits a sudden change of the spectral index, usually known as the knee of the spectrum. The origin of this knee is seen as key for the understanding of galactic cosmic rays. KASCADE-Grande investigated with a multi-detector installation (including LOPES for measuring the radio emission of air showers) the elemental composition of...Go to contribution page
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Aongus O'Murchadha (Université Libre de Bruxelles), Dr Carl Gilbert Pfendner (Ohio State University (USA))03/08/2015, 15:30The Askaryan Radio Array (ARA) is an ultra-high energy (>100 PeV) cosmic neutrino detector which is in phased construction near the South Pole. ARA searches for radio Cherenkov-like emission from particle cascades induced by neutrino interactions in the ice using radio frequency antennas (~150-800 MHz) deployed at a design depth of 200m in the Antarctic ice. A prototype ARA Testbed station was...Go to contribution page
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Dr Natalia Barbashina (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))03/08/2015, 15:30Investigations of Forbush decreases in a muon flux have certain peculiarities. First, muons are sensitive to the higher energies (relative to neutrons) of primary cosmic rays (PCRs), opening up new possibilities for studying the heliospheric perturbations responsible for the modulation of high energy PCRs. Second, muons save the direction of the primary particle motion, allowing to obtain the...Go to contribution page
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Juan Cortina (IFAE)03/08/2015, 15:30Current Cherenkov Telescopes for VHE gamma ray astrophysics are pointing instruments with a field of view up to a few tens of sq.deg. We propose to build an array of two non-steerable telescopes with a FOV of 5 x 60 sq.deg oriented along the meridian. Roughly half of the sky drifts through this FOV in a year. We have performed a MC simulation to estimate the performance of this instrument,...Go to contribution page
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Ms Soheila Abdollahi (Alborz Observatory, Sharif University of Technology)03/08/2015, 15:30Alborz-I as the first phase of the Alborz Observatory Array supposed to study the cosmic ray spectrum around the knee at Sharif University of Technology, Tehran (1200 m a.s.l). In this paper theoretical results obtained from study of the design features, performance, technical characteristic and angular resolution of the Alborz-I consists of 20 scintillator detectors are described. Using a...Go to contribution page
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Dr Hans Peter Dembinski (Bartol Institute, Dept of Physics and Astronomy, University of Delaware), Javier Gonzalez (Bartol Research Institute, Univ Delaware)03/08/2015, 15:30IceTop, the surface component of the IceCube detector, has been used to measure the energy spectrum of cosmic rays from 1.6 PeV to 1.3 EeV. It was recently shown that the recorded data can also be used to measure the average density of GeV muons in the shower front at large radial distances (> 300 m) from the shower axis. The analysis is based on fitting the single muon peak in charge...Go to contribution page
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Dr Xi Luo (North-West University, Potchefstroom, South Africa)03/08/2015, 15:45We have constructed a 3-D numerical model for studying Forbush Decreases (FDs) in the heliosphere. It incorporates 3-D propagation barriers, with enhanced cooling inside, into a time-dependent Parker type modulation model using a Stochastic Differential Equation (SDE) approach. This numerical model simultaneously takes into account the effect of solar wind convection, regular drift plus...Go to contribution page
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Markus Roth (KIT)03/08/2015, 15:45Extensive air showers are traditionally described with phenomenological models - often called Lateral Distribution Functions (LDFs) - of the density of particles at the ground and derived quantities. The concept of air shower universality aims at a deeper understanding of the shower development in the atmosphere by taking into account physical properties of different types of secondary...Go to contribution page
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Geraldina Golup (Centro Atomico Bariloche)03/08/2015, 15:45We present the results of three searches for correlations between UHECR events measured by Telescope Array and the Pierre Auger Observatory and high-energy neutrino candidate events from IceCube. Two cross-correlation analyses of UHECRs are done: one with 28 cascades from the IceCube high-energy starting events sample and the other one with 12 high-energy tracks. The angular separation between...Go to contribution page
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Sergio Dasso (IAFE - CONICET - UBA)03/08/2015, 15:45The Latin American Giant Observatory (LAGO) is an extended cosmic ray observatory composed by a network of water-Cherenkov detectors (WCDs) spanning over different sites located at significantly different altitudes (from sea level up to more than $5000$\,m a.s.l.) and latitudes across Latin America, covering a huge range of geomagnetic rigidity cut-offs and atmospheric absorption/reaction...Go to contribution page
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Dr Akira Okumura (Solar-Terrestrial Environment Laboratory, Nagoya University)03/08/2015, 15:45We have developed a non-sequential ray-tracing simulation library, ROot-BAsed Simulator for ray Tracing (ROBAST), which is aimed to be widely used in optical simulations of cosmic-ray and gamma-ray telescopes. The library is written in C++, and fully utilizes the geometry library of the ROOT analysis framework. In spite of the importance of optics simulations in cosmic-ray experiments, there...Go to contribution page
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Daniele Gaggero03/08/2015, 17:00In the first part, I present a detailed overview on recent results regarding modeling of cosmic-ray (CR) propagation in the Galaxy and in the Heliosphere. In particular I focus on the necessity to go beyond the standard and simplified picture of uniform and homogeneous diffusion, showing that gamma-ray data point towards different propagation regimes in different regions of the Galaxy. I...Go to contribution page
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Piera Luisa Ghia03/08/2015, 17:30The Pierre Auger Observatory has been detecting ultra-high energy cosmic rays (UHECRs) for more than ten years. It presents the first "hybrid“ observatory on the world’s largest scale, comprising a 3000 km2 surface detector (SD) of 1600 water Cherenkov stations spaced 1500 m apart and four fluorescence detectors (FD) overlooking the array. It also now includes three high elevation fluorescence...Go to contribution page
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Stefano Gabici (APC)03/08/2015, 18:00Cosmic rays are an essential ingredient in the evolution of the interstellar medium, as they determine the ionisation level of the dense molecular gas where stars and planets form. In recent years, infrared and millimetre observations provided us with measurements of the cosmic ray ionisation rates in a number of molecular clouds. Such ionisation is mainly determined by cosmic rays in the...Go to contribution page
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Heino Falcke (Radboud University Nijmegen/ASTRON/MPIfR Bonn)03/08/2015, 20:00**[BlackHoleCam: The first image of a super massive black hole][1].** ---------- Gravity is successfully described by Einstein's theory of general relativity. One of its most fundamental predictions are black holes. Their defining, but as yet unproven, feature is the event horizon - the point of no return where not even light can escape the grip of gravity. Supermassive black...Go to contribution page
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Enectali Figueroa-Feliciano (Northwestern University)04/08/2015, 09:00Figuring out the nature of dark matter is one of the greatest questions in physics today. While we see its effect in a wide variety of astrophysical and cosmological measurements, a description of its composition and properties has remained elusive. The hunt for dark matter is taking place in three different and complimentary fronts: looking for the end products of potential dark matter...Go to contribution page
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Damiano Caprioli (Princeton University)04/08/2015, 09:45The origin of cosmic rays (CRs) has puzzled scientists since the pioneering discovery by Victor Hess in 1912. In the last decade, however, modern supercomputers have opened a new window on the processes regulating astrophysical collisionless plasmas, allowing the study of CR acceleration via first-principles kinetic simulations; at the same time, new generations of X-ray and gamma-ray...Go to contribution page
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Julie McEnery (NASA)04/08/2015, 11:00The MeV domain is one of the most underexplored windows on the Universe, mainly due to the challenging nature of the measurements. This is an energy range of transition in the Universe. Thermal sources dominate at lower energies, while non-thermal phenomena prevail at higher energies. In addition, observations at both gamma-ray and hard X-ray energies provide compelling evidence of...Go to contribution page
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Hugo Ayala (Michigan Technological University)04/08/2015, 11:00The Fermi Bubbles, which comprise two large and homogeneous regions of spectrally hard gamma-ray emission extending up to 55º above and below the Galactic Center, were first noticed in GeV gamma-ray data from the Fermi Telescope in 2010. The mechanism or mechanisms which produce the observed hard spectrum are not understood. Although both hadronic and leptonic models can describe the spectrum...Go to contribution page
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Mr Matteo Martucci (Laboratori Nazionali di Frascati)04/08/2015, 11:00The great challenge in constraining scenarios for solar energetic particle (SEP) acceleration is due to the fact that the signatures of acceleration itself are heavily modified by transport within interplanetary space. During transport, SEPs are subject to pitch angle scattering by the turbulent magnetic field, adiabatic focusing, or reflections magnetic structures. Ground Level Enhancements...Go to contribution page
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Dr Lara Nava (HUJI)04/08/2015, 11:00Recent advances on gamma-ray observations from SuperNova Remnants and Molecular Clouds offer the possibility to study in detail the properties of the propagation of escaping Cosmic Rays (CR). However, a complete theory for CR transport outside the acceleration site has not been developed yet. Two physical processes are thought to be relevant to regulate the diffusion: the growth of waves...Go to contribution page
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Alexei Struminsky (Space Research Institute)04/08/2015, 11:00We reconstruct an ultimate spectrum of solar/stellar cosmic rays (SCR) in a given point in the heliosphere (stellar sphere) basing on maximal value of magnetic field strenght in active region and its characteristic linear dimension. An accelerator of given dimensions and magnetic field strengh may accelarate to a finite energy for a given time (a maximal energy of SCR). We will use spectrum...Go to contribution page
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Roland Crocker (Australian National University)04/08/2015, 11:15Analysis of γ-ray data provided by the Fermi-LAT has revealed giant, hard-spectrum γ-ray lobes emanating from the Galactic nucleus (and extending to |b| ∼ 50°). These `Fermi Bubbles' have hard-spectrum, total-intensity microwave (∼20-40 GHz) counterparts in their lower reaches (the microwave `Haze' extending to |b| ∼ 35°) and, on large scales, are subsumed by steep spectrum, polarised radio...Go to contribution page
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Simon Michael Kunz (KIT - Karlsruhe Institute of Technology (DE))04/08/2015, 11:15Transport models for galactic cosmic rays depend on a large number of parameters which are poorly known and can be constrained only through derived quantities by comparison with the observed spectra of various cosmic ray species. Numerical models as implemented in the DRAGON or GALPROP code describe a multitude of observations. However, degenerate solutions limit the predictive power of...Go to contribution page
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Xin Wu (Universite de Geneve (CH))04/08/2015, 11:15PANGU (the PAir-productioN Gamma-ray Unit) is a small astrophysics mission with wide field of view optimized for spectro-imaging, timing and polarisation studies. It will map the gamma-ray sky from 10 MeV to a few GeV with unprecedented spatial resolution. This window on the Universe is unique to detect photons emitted directly by relativistic particles, via the decay of neutral pions, or the...Go to contribution page
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Beatrice Panico (INFN)04/08/2015, 11:15From 2009, several experiments, like PAMELA, FERMI and AMS, have shown a rise in the fraction of positrons versus electrons+positrons. One of the most probable explanation is due to the presence of nearby sources, like SNRs or pulsars. PAMELA (Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics) is a ballooon-borne experiment and is collecting data since 15 June 2006. Its...Go to contribution page
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Prof. H.S. Ahluwalia (University of New Mexico)04/08/2015, 11:15Smooth sunspot numbers (SSNs) for cycle 24 increased since onset in December 2008, developing a shoulder in 2012, a plateau in 2013 and a peak in October 2014 followed by a decay phase well after the solar polar magnetic fields reversed; polar field reversals usually occur near SSN maxima but the polarity in northern hemisphere reversed in June 2012 and again in February 2014 while that in...Go to contribution page
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Cristina Consolandi (University of Hawai'i at Manoa (US))04/08/2015, 11:30The Alpha Magnetic Spectrometer (AMS-02) is a high-energy particle detector designed to perform fundamental physics research in space. It was installed on the International Space Station (ISS) on May 19, 2011. During the first 30 months of operations, AMS-02 collected 41 billion events of primary cosmic rays between 1 GV and 1.8 TV. In this work, we analyze the detailed time variation of...Go to contribution page
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Shotaro Komura (Kyoto University)04/08/2015, 11:30The observation of MeV celestial gamma rays provide us much information about various high energy phenomena. However, the sufficient observation has not yet been achieved due to the large radiation backgrounds and unclearness of Compton gamma-ray image. To advance the MeV gamma-ray astronomy, we have developed an Electron-Tracking Compton Camera (ETCC) which consists of a gaseous Time...Go to contribution page
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Iris Gebauer (KIT - Karlsruhe Institute of Technology (DE))04/08/2015, 11:30The Alpha Magnetic Spectrometer (AMS-02) is a state-of-the-art particle detector designed to operate as an external module on the International Space Station (ISS). In this unique space environment cosmic particles can be measured with high precision over an energy range from GeV up to a few TeV. In 2014, the AMS collaboration provided precise measurements of the electron and positron...Go to contribution page
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Dr Gwenael Giacinti (Oxford U.)04/08/2015, 11:30We show that the cosmic ray (CR) knee can be entirely explained by energy-dependent CR leakage from the Milky Way, with an excellent fit to all existing data. We test this hypothesis calculating the trajectories of individual CRs in the Galactic magnetic field. We find that the CR escape time t(E) exhibits a knee-like structure around E/Z = few × PeV for small coherence lengths and...Go to contribution page
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Wim De Boer (KIT - Karlsruhe Institute of Technology (DE))04/08/2015, 11:30The Fermi-LAT 6-year data provide a detailed map of the diffuse gamma-ray sky for which the main contributions originate from neutral pion decay, bremsstrahlung and inverse Compton scattering. The energy spectra of these contributions are known from laboratory experiments and can be used as templates to fit the energy spectra of the Fermi data in each direction, thus providing the...Go to contribution page
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Dr Dario Grasso (INFN, Pisa)04/08/2015, 11:45As recently shown, Fermi-LAT measurements of the diffuse gamma-ray emission of the Galaxy favor the presence of a smooth softening of the primary cosmic-ray spectrum with the Galactocentric distance. This result can be interpreted in terms of a spatial dependent rigidity scaling of the diffusion coefficient. The DRAGON code has been used to build a model which implements such feature...Go to contribution page
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C. Michelle Hui (Michigan Technological University)04/08/2015, 11:45The majority of Galactic TeV gamma-ray sources are pulsar wind nebulae (PWNe) and supernova remnants (SNRs), and the most common association for unidentified sources is PWN. Many of these sources were discovered in TeV by imaging air Cherenkov telescopes using overlapping pointed observations over sections of the Galactic plane. The HAWC observatory is a survey type instrument in the Northern...Go to contribution page
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Iris Gebauer (KIT - Karlsruhe Institute of Technology (DE))04/08/2015, 11:45The Alpha Magnetic Spectrometer (AMS-02) is a state-of-the-art particle detector designed to operate as an external module on the International Space Station (ISS). In the absence of atmospheric disturbance, cosmic ray fluxes between 0.5 GeV and a few TeV can be measured with high precision. In 2014, the AMS collaboration provided precise measurements of the electron and positron...Go to contribution page
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Dr Merlin Kole (University of Geneva)04/08/2015, 11:45Polarimetry is a powerful tool to study the emission processes involved in high energy astrophysical events such as Gamma-Ray Bursts (GRBs). Despite the wealth of information which can be extracted from polarimetry measurements few have been performed successfully thus far. POLAR is a novel space-borne Compton polarimeter foreseen to be launched in 2016 on the Chinese spacelab TG-2. The...Go to contribution page
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Davide Grandi (Universita & INFN, Milano-Bicocca (IT))04/08/2015, 11:45Our backtracing code (Geomagsphere), for Cosmic Rays trajectory reconstruction in the Earth Magnetosphere, has been developed using the latest models of Internal (IGRF-11) and External (Tsyganenko 1996 and 2005) field components. Backtracing technique was applied to AMS-02 data to separate Primary Cosmic Rays Particles from Secondary particles. We tested the accuracy of Magnetic Field...Go to contribution page
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sarah recchia (Gran Sasso Science Institute)04/08/2015, 12:00The transport of cosmic rays (CRs) in the Galaxy is known to be affected by the presence of winds launched from the Galactic disc. When these winds are pre-assigned, it is easy to check that the effects on transport are limited to energies below $\sim 10$ GeV. Moreover a boundary condition needs to be imposed at large distances (above and below the disc) to ensure the stationarity of the...Go to contribution page
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Melissa Pesce-Rollins (INFN-Pisa)04/08/2015, 12:00Fermi LAT >30 MeV observations of the active Sun have increased the number of detected solar flares by almost a factor of 10 with respect to previous space observations. These sample both the impulsive and long duration phases of GOES M and X class flares. Of particular interest are the recent detections of two solar flares whose position behind the limb was confirmed by the STEREO-B...Go to contribution page
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Dr Nikolay Topchiev (Lebedev Physical Institute)04/08/2015, 12:00The GAMMA-400 is designed to measure fluxes of gamma rays and the electron–positron cosmic-ray component possibly associated with annihilation or decay of dark matter particles; and to search for and study in detail Galactic Center, discrete and extended gamma-ray sources, to measure the energy spectra of Galactic and extragalactic diffuse gamma rays, and to study gamma-ray bursts and gamma...Go to contribution page
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Christian Fruck (MPP)04/08/2015, 12:00We present the results from the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescope of the search for TeV variability in the very high energy (VHE) gamma ray regime performed during the pericenter passage of the G2 gas cloud. This gas cloud orbits the Galactic Center (GC) on a highly eccentric trajectory with a pericenter distance of only a few thousand Schwarzschild radii, The GC has...Go to contribution page
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Dr Alexander Karelin (NRNU MEPhI)04/08/2015, 12:00The large-scale anisotropy (or the so-called star-diurnal wave) has been studied in the frame of research carrying out in space with the PAMELA instrument. It was studied during the time period covering 2006-2014 for the Southern and Northern hemispheres simultaneously. The cosmic ray intensity distribution was constructed in the equatorial coordinate system and anisotropy was obtained. For...Go to contribution page
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Dr Akitoshi Oshima (Chubu University, Aichi, Japan)04/08/2015, 12:15From the density gradient of galactic cosmic rays derived from the Swinson flow and the regression coefficients between the intensity variations of cosmic rays and the solar wind velosity, we have derived the diffusion coefficient and the scattering mean free path of galactic cosmic rays in the heliosphere near the Earth. In this analysis we have used the data obtained by the large area muon...Go to contribution page
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Dr Alexandre Marcowith (LUPM)04/08/2015, 12:15During their journey in the Galaxy, Cosmic Rays (CRs) are scattered by magnetic perturbations that can be well described by the magneto-hydrodynamic (MHD) theory. The very nature of the interaction still however remains largely unknown. In this work we investigate by the mean of direct numerical calculations the CR propagation in large scale driven turbulence. The MHD fluctuations are...Go to contribution page
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Nicholas Cannady (Louisiana State University)04/08/2015, 12:15The CALorimetric Electron Telescope (CALET) is a space-borne cosmic ray calorimeter system planned for installation on the JEM-EF platform on the International Space Station (ISS) in 2015. The CALET collaboration is a Japan-led team collaborating with researchers in Italy and the U.S. In addition to precise measurement of the cosmic ray electron and nuclei spectra, the CALET calorimeter...Go to contribution page
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Dr Philipp Mertsch (KIPAC, Stanford University)04/08/2015, 12:15The arrival directions of multi-TeV cosmic rays show significant anisotropies at small angular scales. It has been argued that this small scale structure is the reflection of the local, turbulent magnetic field in the presence of a global dipole anisotropy in cosmic rays as determined by diffusion. This effect is analogous to weak gravitational lensing of temperature fluctuations of the cosmic...Go to contribution page
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Mr Andrew Flinders (University of Utah)04/08/2015, 12:15Geminga was first detected as a gamma-ray point source by the SAS-2 gamma-ray satellite observatory and the COS-B X-ray satellite observatory. Subsequent observations have identified Geminga as a heavily obscured radio-quiet pulsar associated with a nearby (250 pc) late Sedov phase (300,000 year) supernova remnant. The Geminga pulsar is the second brightest source detected by the Large Area...Go to contribution page
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Luke Drury (DIAS)04/08/2015, 14:00Cosmic-ray scattering on magnetic turbulence leads to spatial diffusive propagation; if the scattering medium is moving, this will inevitably also cause changes in the momentum of the particles, so-called diffusive reacceleration. This can be described as diffusion in momentum space. Diffusive reacceleration has often been invoked to explain the peak observed in secondary-to-primary ratios...Go to contribution page
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Matthias Kadler (Uni Würzburg)04/08/2015, 14:00The IceCube collaboration has detected an extraterrestrial neutrino flux with the most significant signal in the southern sky at PeV energies. In spite of its smaller volume, the ANTARES telescope provides comparable sensitivity and superior angular resolution at the given southern declinations and energies below ~100TeV and is thus the ideal instrument to constrain the neutrino spectrum of...Go to contribution page
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Timo Karg (DESY)04/08/2015, 14:00
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Christoph Deil (MPI for Nuclear Physics, Heidelberg)04/08/2015, 14:00The H.E.S.S. Galactic plane survey (HGPS) was performed with the H.E.S.S. I Cherenkov telescope array in Namibia from 2004 to 2013. Roughly ~2800 hours of high-quality observations of the Galactic disk are available in the Galactic longitude range 250 to 65 degrees and Galactic latitude range |b| < 3.5 degrees. This is the first high-resolution (~0.1 deg) and sensitive (~2% Crab nebula...Go to contribution page
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Rendani Nndanganeni (North-West University (Potchefstroom campus) South Africa)04/08/2015, 14:00Modeling and the subsequent understanding of the processes responsible for the solar modulation of Jovian and galactic electrons require that a source function for Jovian electrons and a heliopause spectrum (HPS) for galactic electron as an input spectrum be specified at the heliopause (assumed to be the solar modulation boundary). Using a comprehensive three-dimensional numerical model based...Go to contribution page
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Igor Moskalenko (Stanford University)04/08/2015, 14:15Recent years are marked with many breakthroughs in astrophysics of cosmic rays (CRs), and more are expected in the nearest future. Their proper interpretation is impossible without a well-developed propagation code. The GALPROP project celebrates its 19th anniversary this year. This project is devoted to the development of a self-consistent model for CR propagation in the Galaxy and...Go to contribution page
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Hans Niederhausen (Stony Brook Univ.)04/08/2015, 14:15We have performed a new measurement of the all-sky diffuse flux of high energy, E>10TeV, extraterrestrial neutrino induced showers (cascades) based on IceCube data collected during 641 days in 2010--2012. Cascades arise predominantly in electron and tau neutrino interactions and have good energy resolution, so that they are well-suited for the spectral characterization of the extraterrestrial...Go to contribution page
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Aion Viana (MAX-PLANCK-INSTITUT FÜR KERNPHYSIK)04/08/2015, 14:15The Galactic Centre region has been observed by the H.E.S.S. I array of ground-based Cherenkov telescopes since 2004 leading to the detection of the very-high-energy (VHE, E > 100 GeV) gamma-ray source HESS J1745-290 spatially coincident with the supermassive black hole Sgr A*. Diffuse TeV gamma-ray emission has been detected along the Galactic ridge, most likely due to cosmic-ray interactions...Go to contribution page
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Riccardo Munini (INFN - Universita Studi Trieste)04/08/2015, 14:15The satellite-borne PAMELA experiment was launched in June 2006 from the Baikonur cosmodrome and since than it has been taking data. The apparatus design is particularly suited for particle and antiparticle identification. At this conference we present the half-yearly galactic cosmic ray electron and positron spectra measured down to 70 MeV and from July 2006 to December 2009. The most...Go to contribution page
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Ralf-Juergen Dettmar (Ruhr-University Bochum)04/08/2015, 14:30First results from a new radiocontinuum study of edge-on galaxies are presented. The study is based on data from the CHANG-ES (Continuum HAlos in Nearby Galaxies - an EVLA Survey; PI J. Irwin) project which has observed 35 edge-on galaxies with the Karl G. Jansky Very Large Array (JVLA) in two frequency bands (L- and C-band) and in three array configurations (D, C, B). This survey benefits...Go to contribution page
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Peter Eger (MPIK Heidelberg)04/08/2015, 14:30The shell-type supernova remnant (SNR) RX J1713.7-3946 is one of the brightest TeV gamma-ray sources in the Galaxy detected by the High Energy Stereoscopic System (H.E.S.S.). Despite extensive multi-wavelength coverage in gamma-rays, X-rays and lower energy regimes, the nature of the underlying gamma-ray radiation mechanisms is still under debate. Here, we present new precision...Go to contribution page
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Katherine Rawlins (University of Alaska Anchorage)04/08/2015, 14:30With the IceTop detector at the South Pole, a spectrum of cosmic ray air shower size $S_{125}$ can be unfolded into an energy spectrum of primary cosmic rays. When the IceTop data is analyzed in coincidence with high-energy muon energy loss information from the deep IceCube detector, both the spectrum and mass composition of primary cosmic rays can be extracted using a neural network. Both of...Go to contribution page
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Godfrey sibusiso Nkosi (Vaal University of technology)04/08/2015, 14:30Several space missions have improved our knowledge of the solar modulation of galactic cosmic rays in the heliosphere during the past 40 years (e.g. Pioneer 10 & 11, Voyager 1 & 2, IMP 8, Ulysses, PAMELA and more). These data sets are from solar minimum to solar maximum activity with clear differences in the energy spectra of the positive and negative magnetic polarity cycles. The modulation...Go to contribution page
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Luigi Antonio Fusco (University of Bologna)04/08/2015, 14:30Compelling evidence of the existence of cosmic neutrinos has been reported by the IceCube collaboration. Some features of this signal could be explained by a Northern/Southern sky asymmetry of the flux. This possible asymmetry would be related to the presence of the bulk of our Galaxy in the Southern sky. The ANTARES neutrino telescope, located in the Mediterranean Sea, consists of a three...Go to contribution page
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Satyendra Thoudam (Radboud University)04/08/2015, 14:45Motivated by the recent high-precision measurements of the cosmic-ray energy spectrum and composition by several new-generation experiments, a detailed study to understand the observed properties of cosmic rays up to the highest energies is being conducted. The study involves building a cosmic-ray propagation model in the Galaxy that explains the observed spectra of different cosmic-ray...Go to contribution page
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Nukri Komin (Wits University)04/08/2015, 14:45The Large Magellanic Cloud (LMC) is an irregular satellite galaxy of the Milky Way, which has been observed extensively at Very-High-Energy (VHE) gamma-rays with the H.E.S.S. telescopes, obtaining a deep exposure of 210 hours. In this talk we will present the results of this campaign. Besides the already known PWN N 157B, these observations establish significant VHE gamma-ray emission from...Go to contribution page
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Carlo Francesco Vigorito (Universita' & INFN Torino, Italy)04/08/2015, 14:45The Large Volume Detector (LVD) in the INFN Gran Sasso National Laboratory, Italy, is a 1 kton liquid scintillator neutrino observatory mainly designed to study low energy neutrinos from gravitational stellar collapses. LVD is sensitive to core-collapse supernovae via neutrino burst detection with 100\% efficiency over our own entire Galaxy. The result of the search of neutrino bursts...Go to contribution page
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Dr Inés Valiño (University of Santiago de Compostela)04/08/2015, 14:45The flux of cosmic rays has been measured with unprecedented precision and statistics at the Pierre Auger Observatory. We report an update of the all-sky flux of cosmic rays above $3{\times}10^{17}$ eV obtained by combining four independent data sets. These measurements are based on data from the surface detector (divided into two sets according to the shower zenith angle), from a nested...Go to contribution page
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Jan Gieseler (University of Kiel)04/08/2015, 14:45Galactic Cosmic Rays (GCRs) are modulated by various effects as they propagate through the heliosphere before they are detected at Earth. This transport can be described by the Parker equation (Parker, 1965). It calculates the phase space distribution of GCRs depending on the main modulation processes: convection, drifts, diffusion and adiabatic energy changes. A first order approximation of...Go to contribution page
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Mr Leif Rädel (RWTH Aachen University)04/08/2015, 15:00The IceCube Collaboration measured an all-flavor, high-energy astrophysical neutrino flux. In order to identify the sources of this flux, high-energy muon neutrinos are ideal messenger particles because of their excellent angular resolution. However, the first step is to confirm the observed flux in the muon neutrino channel using IceCube data from 2009 through 2014. The main background for...Go to contribution page
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Markus Holler (LLR - Ecole Polytechnique)04/08/2015, 15:00
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Dr Pankaj Kumar Shrivastava (Govt.Model Science College,Rewa(M.P.)India)04/08/2015, 15:00Galactic cosmic rays are modulated through their propagation in interplanetary medium by the effect of large scale disturbances in sun related interplanetary medium. Often the interplanetary parameters used in modulation are solar wind velocity V and interplanetary magnetic field B. For this study, we have used the monthly, quarterly, half yearly and yearly mean values of solar wind velocity...Go to contribution page
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Dmitri Ivanov (University of Utah)04/08/2015, 15:00The Telescope Array (TA) covers an energy range from 4 PeV to over 100 EeV. TA is a hybrid detector that uses air fluorescence detectors (FD) combined with a ground array. In May 2015, TA will have collected 7 years of data. The TA low energy extension (TALE), which sees cosmic rays down to 4 PeV, consists of additional fluorescence telescopes at one of the TA FD stations. An infill array of...Go to contribution page
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David Alain Maurin (Centre National de la Recherche Scientifique (FR))04/08/2015, 15:00I present the first public release of the USINE code for charged galactic cosmic-ray (GCR) propagation. USINE is a C++ toolbox handling GCR ingredients and several semi-analytic propagation models (1D and 2D). Non-public versions of this code were used in the last 10 years to fit the transport parameters, study radioactive nuclei, antinuclei and possible DM contributions, etc. The...Go to contribution page
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Lars Mohrmann (DESY)04/08/2015, 15:15With the discovery of a high-energy astrophysical neutrino flux, the IceCube Neutrino Observatory, located at the geographical South Pole, has opened the field of neutrino astronomy. While evidence for extraterrestrial neutrinos has been found in multiple searches, it was not yet possible to identify their sources; they appear as an isotropic excess. Nevertheless, it is possible to constrain...Go to contribution page
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Eiji Kido04/08/2015, 15:15We present the latest energy spectrum of ultra-high-energy cosmic rays (UHECRs) with energy E > $10^{18.2}$ eV observed by the surface detectors of the Telescope Array experiment. The broken power law to the spectrum contains two break points, a flattening known as the "ankle" or "dip" at E = $10^{18.70}$ eV, and a steepening at E = $10^{19.75}$ eV. These spectral features are related to the...Go to contribution page
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Prof. Kazuoki Munakata (Department of Physics, Shinshu University)04/08/2015, 15:15We analyze the north-south anisotropy (NSA) of galactic cosmic rays (GCRs) observed with the GMDN on hourly basis in the “toward” (T) and “away” (A) IMF sectors separately. From the monthly mean and its standard error of NSA in each of T and A sectors, we deduce the “T/A separation” and its temporal variation during a period between 2006 and 2014. We also examine the “success rate” which is a...Go to contribution page
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Dr Ervin Kafexhiu (Max-Planck-Institut für Kernphysik)04/08/2015, 15:15Using publicly available Monte Carlo codes as well as compilation of published data on $pp$ interactions for proton kinetic energy below 2 GeV, we parametrize the energy spectra and production rates of $\gamma$-rays by simple but quite accurate ($\leq 20 \%$) analytical expressions in a broad range from the kinematic threshold to PeV energies.Go to contribution page
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Michael Gajdus (Humboldt Universität zu Berlin)04/08/2015, 15:15The Vela pulsar (PSR J0835-4510) is the brightest persistent source in the high-energy γ-ray sky. It is a relatively near, young and energetic rotation-powered pulsar. Vela was a key target for the High Energy Stereoscopic System phase II array (H.E.S.S. II). Observations were carried out following a hint of pulsed emission above 20 GeV seen using Fermi-LAT data. In this talk we present...Go to contribution page
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Mr Masayoshi Kozai (Department of Physics, Shinshu University)04/08/2015, 15:30Galactic cosmic ray (GCR) depleted regions behind the interplanetary shocks or disturbances cause the Forbush decreases (Fds), short term decreases of the GCR isotropic intensity (or GCR density) at the Earth. We can deduce the geometries of the depleted regions from three-dimensional GCR anisotropy associated with Fds, because the first order anisotropy reflects the spatial gradient of GCR...Go to contribution page
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Vladimir Zirakashvili (IZMIRAN)04/08/2015, 15:30It is shown that astrophysical neutrinos observed by IceCube can be produced by protons accelrated at IIn supernova remnant shocks propagating in the dense circumstellar medium. The nonlinear diffusive shock acceleration model is used for description of particle acceleration. We calculate the neutrino flux produced by a single IIn supernova remnant and the neutrino background produced by all...Go to contribution page
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Mr Steffen Hallmann (ECAP - FAU Erlangen)04/08/2015, 15:30The Fermi Bubbles are two giant lobes of $\gamma$-ray emission above and below the Galactic Center. Whereas the origin of the observed $\gamma$-ray flux remains obscure, the measurement of a neutrino flux from the Fermi Bubbles could distinguish between leptonic and hadronic emission scenarios. Such a search for a neutrino signal from the Fermi Bubbles has been performed with the ANTARES...Go to contribution page
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Dr Robert Parsons (Max Planck Institute for Nuclear Physics)04/08/2015, 15:30The Galactic Centre has been studied with the H.E.S.S. array for over 10 years, revealing a bright, complex gamma-ray morphology above 100 GeV. Besides a strong point-like very-high-energy gamma-ray source coincident with the supermassive black hole Sgr A*, previous analyses also revealed a diffuse ridge of gamma-ray emission, indicative of a powerful cosmic-ray accelerator in this region. ...Go to contribution page
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Harm Schoorlemmer (University of Hawaii)04/08/2015, 15:30The first flight of the Antarctic Impulse Transient Antenna (ANITA) experiment recorded 16 radio signals that were emitted by cosmic ray induced air showers. Recent developments in simulation packages made it possible to estimate the cosmic ray energy from these observations. In this talk we introduce a novel method to estimate the cosmic ray energy and apply it to the observations. We...Go to contribution page
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Dmitry Zaborov (LLR - Ecole Polytechnique)04/08/2015, 15:45The recent addition of the 28 m Cherenkov telescope (CT5) to the H.E.S.S. array extended the experiment's sensitivity towards low energies. The lowest energy threshold is obtained using monoscopic observations with CT5, providing access to gamma-ray energies below 100 GeV. This is particularly beneficial for studies of Active Galactic Nuclei (AGN) with soft spectra and located at redshifts...Go to contribution page
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Yang Ruizhi04/08/2015, 15:45We use 5 years of Fermi-LAT data towards the Galactic centre giant molecular cloud complex, Sagittarius B, to test questions of how well-mixed the Galactic component of cosmic rays are and the level of the cosmic-ray sea in different parts of the Galaxy. We use dust-opacity maps from the Planck satellite to obtain independent methods for background subtraction, and an estimate for the mass of...Go to contribution page
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Prof. Karel Kudela (IEP SAS, Watsonova 47, 04001 Košice, Slovakia)04/08/2015, 15:45A detailed analysis has been made of annual meteorological, and cosmic ray, data from the Lomnicky stit mountain observatory (2634 masl), from the standpoint of looking for possible solar cycle (including cosmic ray) manifestations. Interestingly, it is found that taking the two 'recent' Solar Cycle periods (SC 22 and 23), the measured 'cloud cover' is nearly linearly proportional to the...Go to contribution page
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Prof. Glennys Farrar (New York University)04/08/2015, 15:45The sharp change in slope of the ultra-high energy cosmic ray spectrum around 10^18.6 eV (the ankle), combined with evidence of a light but extragalactic component near and below the ankle and intermediate composition above, has proved exceedingly challenging to understand theoretically. We propose a mechanism whereby photo-disintegration of ultra-high energy nuclei in the region...Go to contribution page
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Dr MAHENDRA KUMAR RICHHARIA (GOVERNMENT MODEL SCIENCE COLLEGE,JABALPUR(M.P.) INDIA 482001)04/08/2015, 16:00The aim of this work is to study the long term variation in third harmonics of cosmic ray intensity on sixty quietest days in a year using the data of high latitude and low latitude neutron monitoring stations during the solar cycle 20-22.It has been observed that in spite of the abrupt change in the amplitude and phase of third harmonic of cosmic ray intensity, the amplitude of third...Go to contribution page
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Dr Renata Modzelewska (Siedlce University)04/08/2015, 16:00The temporal evaluation of the 27-day variation of the three dimensional (3D) galactic cosmic ray (GCR) anisotropy has been studied for 1965-2014. 3D anisotropy vector was obtained based on the neutron monitors and Nagoya muon telescopes data. We analyze the 27-day variation of the (1) two dimensional (2D) GCR anisotropy in the ecliptic plane, and (2) North-South anisotropy (ANS) normal to...Go to contribution page
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Dr Takanori Yoshikoshi (Institute for Cosmic Ray Research, University of Tokyo)04/08/2015, 16:00We have been setting up a 3-meter diameter atmospheric Cherenkov telescope in Akeno, Japan, for various R & D studies mainly on very high energy gamma-ray astrophysics. This Davies-Cotton type telescope (Akeno telescope, hereafter) was manufactured in 1998 and has been recommissioned at low cost. A low power consumption imaging camera system has been developed for a future gamma-ray...Go to contribution page
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Simon Bacholle (APC- Paris Diderot university)04/08/2015, 16:00The future JEM-EUSO instrument is a UV telescope to be installed on the International Space Station (ISS) with the goal of observing Extensive Air Showers (EAS) created by Ultra-High Energy Cosmic Rays (UHECRs). EUSO-balloon is a pathfinder mission for JEM-EUSO which flew in a stratospheric balloon from Timmins, Canada in August 2014. Due to its placement on the ISS, two major specifications...Go to contribution page
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Sarah Mueller (KIT)04/08/2015, 16:00The precise determination of the number of muons in extensive air showers is a key issue for being able to separate showers that have been initiated by different primary particles. In the context of the planned upgrade of the Pierre Auger Observatory to improve muon detection capabilities, we have analyzed CORSIKA shower simulations at energies above $10^{18}\,\mathrm{eV}$ to quantify...Go to contribution page
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Prof. T.Brian Humensky (Columbia University)04/08/2015, 16:00The Cherenkov Telescope Array (CTA) is an international next-generation ground-based gamma-ray observatory. CTA will be implemented as one or more arrays of tens of small, medium and large-sized imaging Cherenkov telescopes with the goal of improving the sensitivity of the current-generation experiments by an order of magnitude. CTA will provide energy coverage from ~20 GeV to more than 300...Go to contribution page
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Shoushan Zhang (Institute of High Energy Physics)04/08/2015, 16:00The Large High Altitude Air Shower Observatory (LHAASO) will be constructed at Mt. Haizi in Sichuan Province, China. Among several detector components of the LHAASO, the Water Cherenkov Detector Array (WCDA) is of great importance for low-to-middle energy gamma ray astronomy. The WCDA has an area of 90,000 m2 in total, which is sub-divided into 3600 cells by curtains, with a PMT resided in...Go to contribution page
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Henrike Fleischhack (DESY)04/08/2015, 16:00VERITAS is an imaging atmospheric Cherenkov telescope array that is sensitive to very-high energy gamma-rays from 85 GeV to 30 TeV. We present a high-performance shower-image analysis. The algorithm is based on the likelihood fitting of the charge amplitude in the camera pixels to an expected image template. The templates are generated by performing Monte-Carlo simulations of a large number of...Go to contribution page
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Du Toit Strauss (North-West University, South Africa)04/08/2015, 16:00The study of the modulation of cosmic rays in the heliosphere has recently been done by using increasingly the stochastic differential equation (SDE) approach to solving the well-known transport equation. This approach, which is now well-established and published, allows for an in depth study of the modulation effects of the wavy heliospheric current sheet (HCS), in particular as its waviness...Go to contribution page
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Thomas Paul (Lehman College, City University of New York)04/08/2015, 16:00The Extreme Universe Space Observatory (JEM-EUSO) is designed to detect the highest energy particles in the Universe by observing the fluorescence and (reflected) Cherenkov light produced when these ultrahigh energy cosmic rays (UHECR) traverse the Earth's atmosphere. Unlike existing cosmic ray observatories, JEM-EUSO will view the atmosphere from above, as the instrument will be attached to...Go to contribution page
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PRAVATA MOHANTY (Tata Institute of Fundamental Research, Mumbai, India)04/08/2015, 16:00A large area (560~m$^2$) tracking muon detector operating in the GRAPES-3 experiment at Ooty in India has been recording cosmic ray muons at a rate of 1.7$\times$ 10$^8$ h$^{-1}$ since 2000. The high statistics data have enabled sensitive measurement of several solar phenomena to be made including the solar and sidereal anisotropy and Forbush decreases following coronal mass ejections....Go to contribution page
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Mr Mohammad Sabouhi (Department of Physics , Semnan University, P.O. Box 35196-45399, Semnan, Iran)04/08/2015, 16:00Abstract: The propagation direction is one of the key parameter of an air shower. Many of current techniques are based on arrival time of an air shower. In this study we introduce a new and completely different approach to determine the propagation direction (and as a result the arrival direction) of an air shower based on filtered peak radio amplitudes which can shape radio signal patterns....Go to contribution page
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Mr Sayan Biswas (Senior Research Fellow, Bose Institute)04/08/2015, 16:00Finite lumps of strange quark matter in the form of strangelets, theorized absolute ground state of QCD containing a bound state of approximately equal numbers of up, down and strange quarks, are supposed to be more stable than $^{56}{\rm {Fe}}$ nuclei. Recent simulation studies suggest that a major source of strangelets in the Galaxy may be the fragmentation of tidally released bulk strange...Go to contribution page
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Dr Benjamin Zitzer (McGill University)04/08/2015, 16:00In the cosmological paradigm, cold dark matter (DM) dominates the mass content of the Universe and is present at every scale. Candidates for DM include many extensions of the standard model, with weakly interacting massive particles (WIMPs) in the mass range from ~10 GeV to greater than 10 TeV. The self-annihilation or decay of WIMPs in astrophysical regions of high DM density can produce...Go to contribution page
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Jan Kunnen (Vrije Universiteit Brussel)04/08/2015, 16:00Many models predict new particles that have the properties of a Weakly Interacting Massive Particle (WIMP) and could explain the dark matter observed in the universe. Heavy celestial bodies, such as the Earth, could capture these WIMPs and accumulate them. Over time the WIMPs will self-annihilate and may produce standard model particles, including neutrinos. Large scale neutrino telescopes,...Go to contribution page
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Aya Ishihara (Chiba University)04/08/2015, 16:00Observations of extremely high energy neutrinos are expected to probe the origin of the highest energy cosmic rays with energies up to and above $10^{20}$eV. Cosmogenic neutrinos are associated with the interaction of those most energetic cosmic rays with cosmic microwave background photons (GZK effect) and considered a guaranteed astrophysical neutrino signal. The cosmogenic neutrinos have...Go to contribution page
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Mrs GRACE IHONGO (UNIVERSITY OF ABERDEEN)04/08/2015, 16:00Galactic cosmic ray flux calculated at 1au within the energy range (0.2-88) Ge V using the model is presented. The relationship between the calculated flux and solar wind is analyzed and presented. Short-time variation of the flux at a fixed energy range is also calculated, and this is used to predict galactic cosmic ray intensity variation at earth.Go to contribution page
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Mr Camille Moretto (Laboratoire de l'Accélérateur Linéaire, Université Paris-Sud/CNRS)04/08/2015, 16:00EUSO-Balloon is a balloon borne mission operated by CNES during a one-night flight in August 2014 over the Ontario forest, in Canada, at 38 km altitude. The payload is a technological demonstrator for the Extreme Universe Space Observatory (JEM-EUSO) aiming at the detection of Extensive Air Showers (EAS) induced by Ultra High Energy Cosmic Rays (UHECR) from the International Space Station...Go to contribution page
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Rashmi Johnson (SSN College of Engineering)04/08/2015, 16:00The radiation present today as a 2.7 K thermal background originated when the universe was denser by a factor of 109 and younger by a factor of around 5× 104. The radiation provides the most distant direct image of the universe we can hope to see, at least until gravitational radiation becomes a useful astronomical data source. The microwave background radiation is extremely uniform, varying...Go to contribution page
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Mr Klaus Wiebe (Johannes Gutenberg-Universität Mainz)04/08/2015, 16:00Dark matter particles can be trapped in massive celestial bodies, such as the Sun or the Earth. Their self-annihilations may produce standard model particles, including neutrinos of all flavors. Recent developments of reconstruction tools have allowed us to reconstruct electron and tau neutrino interactions with adequate angle and energy resolutions and to estimate the corresponding...Go to contribution page
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Joshua Wood (University of Maryland, College Park)04/08/2015, 16:00The High Altitude Water Cherenkov (HAWC) Observatory is a ground-based, TeV gamma-ray observatory in the state of Puebla, Mexico at an altitude of 4100m. Its 22,000 m$^2$ instrumented area, wide field of view (~2 sr), and >95% uptime make it an ideal instrument for discovering gamma-ray burst (GRB) emission at ~100 GeV. Such a discovery would provide key information about the origins of prompt...Go to contribution page
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753. An Additional Component Blurring the Transition between Galactic and Extragalactic Cosmic Rays?Olivier Deligny (CNRS/IN2P3)04/08/2015, 16:00Recent KASCADE-Grande and Auger results between $10^{17}~$eV and $5~10^{18}~$eV have revealed complex features in the energy spectrum, be it in the all-particle one or in the composition-sensitive ones. They have also revealed that the mass composition is dominated by iron nuclei around $10^{17}~$eV, and by light and intermediate-nuclei elements above $10^{18}~$eV. In this contribution, we...Go to contribution page
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Mr Christian Sarmiento-Cano (Universidad Industrial de Santander)04/08/2015, 16:00The Latin American Giant Observatory (LAGO) is an extended Cosmic Rays observatory composed by a network of Water Cherenkov Detectors (WCDs) spread over Latin America. This work will report the analysis of three years of data from three LAGO WCD located in Cerro Chacaltaya, Bolivia, at 5200 m a.s.l. Background cosmic ray rate from these detectors is checked for DAQ issues and inconsistencies,...Go to contribution page
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Beatrice Panico (INFN Napoli (IT))04/08/2015, 16:00EUSO-Balloon is a balloon-borne experiment, conceived as a pathfinder for JEM-EUSO experiment which is the first experiment measuring the highest energy cosmic rays from space. EUSO-Balloon is equipped with an optical system made by two Fresnel lenses and one photo detection module (PDM), representing a complete prototype for the JEM-EUSO experiment. On 24th August 2014 EUSO-Balloon was...Go to contribution page
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Omar Musalem (UNAM)04/08/2015, 16:00We developed a catalog of Forbush decreases (Fd), in the period 2007-2013. To analyze the Fd’s, we used data from three neutron monitors representing low, medium and high cut-off: Oulu (Finland), Moscow (Russia) and Mexico City. We selected the 9 most energetic events in the period to analyze them further. With the available data (interplanetary data from OMNI) we identified that 8 events are...Go to contribution page
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Yury Balabin (Polar geophysical institute)04/08/2015, 16:00Analysis of data of world network neutron monitor (NM) has revealed the considerable annual variation of cosmic ray (CR) flux in 2011-2014. The variation observed at all stations: circumpolar, mid-latitude and subequatorial. It is present in the CR density changes obtained by the global survey. Annual variation is observed from 2011 to 2014. Phase variation is the same for all NM with a...Go to contribution page
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Mr Benjamin Rotter (University of Hawaii at Manoa)04/08/2015, 16:00Regions of parameter space for a nearly forty year old hypothesis explaining dark matter with the existence of heavy composite quark objects remain unexplored. The Antarctic Impulsive Transient Antenna (ANITA) experiment, a NASA-sponsored long duration balloon payload, is in a unique position to test this exotic dark matter candidate by exploiting the sensitivity of an on-board monitoring...Go to contribution page
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Michael Zacharias04/08/2015, 16:00The LBL AP Librae is a fascinating blazar, since its spectrum contains a few peculiarities, which are not easy to explain. First, the H.E.S.S. collaboration has announced the detection of VHE $\gamma$-ray emission from AP Librae. This results in an unusually broad inverse Compton component, since the X-rays are also inverse Compton dominated. Coupled with the narrow synchrotron component, the...Go to contribution page
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Mr Mohammad Sabouhi (Department of Physics , Semnan University, P.O. Box 35196-45399, Semnan, Iran)04/08/2015, 16:00Abstract: There are many discussions about the best possible type of air showers to radio detections. Two types of air showers are under considerations, Vertical and Inclined. In this study based on CORSIKA and CoREAS simulations, we are going to investigate the best type of aforementioned air showers especially for experimental purposes. We compare raw radio pulses and filtered peak radio...Go to contribution page
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Bruno Khelifi (APC, IN2P3/CNRS)04/08/2015, 16:00The LAT telescope on board of the Fermi satellite provides the deepest survey of the gamma-ray sky in the 100 MeV to 300 GeV energy range. Recently published, the 3FGL catalog contains 3033 sources obtained from the analysis of 4 years of data. While 2043 of these sources are associated with objects identified at other wavelengths, the most numerous populations corresponding to blazars (1145)...Go to contribution page
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Dr James Adams (University of Alabama in Huntsville)04/08/2015, 16:00The Extreme Universe Space Observatory (EUSO) instrument is being developed for deployment on the International Space Station (ISS). Looking down from its berth on the ISS, EUSO will take high speed UV video of Extensive Air Showers (EAS) caused by cosmic rays. Using these videos, the energy and arrival direction of each cosmic ray will be reconstructed. In order to reconstruct the energy, the...Go to contribution page
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Fengrong Zhu (Southwest Jiaotong University), Shoushan Zhang (Institute of High Energy Physics), Yong Zhang (Institute of High Energy Physics), Zhandong Sun (Southwest Jiaotong University), Zhen Cao (Institute of High Energy Physics)04/08/2015, 16:00Abstract: Atmospheric monitoring is the key for experiments using the air Cherenkov/fluorescence techniques. In particular cloud monitoring is of great importance to evaluate “clearness” of night skies which affects to shower images obtained by the Wide Field of view Cherenkov/Fluorescence Telescope Array(WFCTA). A nitrogen laser has been installed at the ARGO-YBJ site for the cloud...Go to contribution page
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Jose Luis Sánchez (University of León), Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00The EUSO-Balloon (CNES) campaign was conducted during the summer of 2014. EUSO-Balloon was launched the night of August 24. A completely isolated Infrared Camera was mounted on the side of the gondola carrying the EUSO-Balloon instrument. During part of the balloon flight a helicopter with UV flashers was flown below the balloon. We have retrieved cloud coverage and Cloud Top Height (CTH) from...Go to contribution page
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Jose Luis Sánchez (University of León), Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00EUSO-BALLOON (CNES) was launched on August 24, 2014 from Timmins (Canada) with a biespectral Infrared Camera onboard intended to measure the cloud coverage during the flight. Clouds at mid and upper levels of the Troposphere are crucial for a proper reconstruction of the main parameters of the Ultra-High Energy Cosmic Rays (UHECR).Therefore, determining Cloud Top Height (CTH) with high...Go to contribution page
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Nicola Tomassetti (Centre National de la Recherche Scientifique (FR))04/08/2015, 16:00The AMS Collaboration has recently released data on cosmic ray (CR) leptons and hadrons that can shed light on two exciting problems in CR physics: on one side, the origin of the rise of the CR positron fraction above 10 GeV of energy, on the other side, the nature of the spectral features observed in CR protons and helium at ~TeV energies. In this work, the AMS data are described using a...Go to contribution page
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Mr Ramesh Koirala (University of Delaware)04/08/2015, 16:00The Constant Intensity method is used to study how signals in IceTop, the surface component of the IceCube Neutrino Observatory, are attenuated by the atmosphere as a function of zenith angle and primary energy. IceTop analyses so far have only used data with zenith angles less than 40$^o$. A goal of this analysis is to extend the standard IceTop reconstruction to larger zenith angles. Showers...Go to contribution page
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Mr Christoph Toennis (Ific)04/08/2015, 16:00In this work we describe the search for Secluded Dark Matter (SDM) annihilation from the Sun with ANTARES. SDM is a special scenario where DM, which would gravitationally accumulate in astrophysical objects like the Sun, is annihilated into a pair of non-Standard Model mediators, which subsequently decay into SM particles. It was suggested to explain some experimental observations, such as the...Go to contribution page
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Dr Rogerio M. de Almeida (Universidade Federal Fluminense)04/08/2015, 16:00Cosmic rays of ultra-high energy are one of the great puzzles of modern physics. So far their production mechanisms, sources, chemical composition and abundances as a function of energy are unknown. One can infer the primary mass composition from the depth of maximum, Xmax, of the longitudinal development of air showers induced by cosmic rays. Measurements of the evolution of this observable...Go to contribution page
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Ms Mika Kagaya (Ibaraki University)04/08/2015, 16:00The current experimental statistics of ultra high-energy cosmic rays (UHECRs) is not sufficient for identification of the sources, although a spatial correlation between the arrival directions of UHECRs and nearby active galactic nuclei (AGNs) has been discussed using the data of the Pierre Auger Observatory and the Telescope Array. Here, we focused on the Fermi Large Area Telescope...Go to contribution page
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Maxim Pshirkov (Moscow State University)04/08/2015, 16:00Extragalactic magnetic fields remain extremely elusive. Non-observation of cascade gamma-rays from VHE sources imply that there is a lower bound on their strength $B_{min}\sim10^{-17}$ G. The upper bound could be larger than $10^{-8}$ G. Magnetic fields of such strength could considerably alter the process of UHECR propagation, increasing deflection of proton UHECRs and even introducing...Go to contribution page
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Daniel Nieto Castano (Columbia University)04/08/2015, 16:00The Cherenkov Telescope Array (CTA) is an international project for a next-generation ground-based gamma-ray observatory. CTA, conceived as an array of tens of imaging atmospheric Cherenkov telescopes, comprising small, medium and large-size telescopes, is aiming to improve on the sensitivity of current-generation experiments by an order of magnitude and provide energy coverage from 20 GeV...Go to contribution page
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Dr Marcos Santander (Barnard College, Columbia University)04/08/2015, 16:00A medium-sized Schwarzchild-Couder Telescope (SCT) is being developed as a possible extension for the Cherenkov Telescope Array (CTA). The Cherenkov camera of the telescope is designed to have 11328 silicon photomultiplier pixels capable of capturing high-resolution images of air showers in the atmosphere. The combination of the large number of pixels and the high trigger rate (> 5 kHz)...Go to contribution page
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Prof. Lev Dorman (IZMIRAN (Russia) and Tel Aviv University (Israel))04/08/2015, 16:00A.V. Belov1, R.T.Gushchina1, L.I.Dorman1,2, V.G.Yanke1 1. IZMIRAN, Kalushskoe ave., 4, Troitsk, Moscow, 142190, Russia 2. Israel Cosmic Ray and Space Weather Center with Emilio Segre’ Observatory on Mt. Hermon, affiliated to Tel Aviv University, Golan Research Institute, and Israel Space Agency Dorman L. lid010529@gmail.com Gushchina R. ...Go to contribution page
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Dr Gwenael Giacinti (University of Oxford, Clarendon Laboratory)04/08/2015, 16:00Progenitors of some supernovae (especially Type IIn) are expected to explode in circumstellar environments containing clumps, or shells from previous eruptions. We show that supernovae occurring in such structured environments must be able to accelerate cosmic rays (CR) to high or very-high energies. In this work, we present a detailed study of the maximum CR energy that can be reached in...Go to contribution page
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Dr Pierre Colin (Max-Planck-Institut für Physik, D-80805 München, Germany), Dr Roberta Zanin (Universitat de Barcelona (ICC, IEEC-UB), E-08028 Barcelona, Spain)04/08/2015, 16:00The W44 region includes the supernova remnant SNR G34.7-0.4 and two additional surrounding GeV sources, revealed with Fermi Large Area Telescope (LAT); the whole system is embedded in the giant molecular cloud G34.8-0.6. In the hypothesis that hadrons are accelerated at the SNR shock, the geometry of the system suggests a possible signature of their diffusion and interaction with the cloud...Go to contribution page
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Dr Roger Ygbuhay (University of New Mexico)04/08/2015, 16:00At high rigidities (≥ 10 GV) galactic cosmic ray (GCR) particle density gradients and mean free paths (λ) in turbulent interplanetary magnetic field (B) at 1 a.u. can only be computed from the solar diurnal anisotropy (SDA) data. Long-term changes of SDA components recorded by the global network of neutron monitors (NMs) with long track records are used to compute the annual mean values of the...Go to contribution page
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Vladimir Zirakashvili (IZMIRAN)04/08/2015, 16:00We discuss what types of supernova remnants can be the sources of PeV cosmic rays and of the corresponding gamma-ray emission.Go to contribution page
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Prof. Istomin Yakov (Moscow Institute Physics and Technology)04/08/2015, 16:00From the analysis of the flux of high energy particles, $E>3\cdot 10^{18}eV$, it is shown that the distribution of the power density of extragalactic rays over energy is of the power law, ${\bar q}(E)\propto E^{-2.7}$, with the same index of $2.7$ that has the distribution of Galactic cosmic rays before so called 'knee', $E<3\cdot 10^{15}eV$. However, the average power of...Go to contribution page
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Prof. Leonid Kuzmichev (SINP MSU)04/08/2015, 16:00DAQ and time synchronization system for the Tunka-HiSCORE array has been developed. The system consists of 8-channel optical station board (OSB) for digitization of anode and dynode signals of 4 PMTs of the optical station and synchronization boards (SB) placed in the DAQ center. All boards are designed on the basis of DRS-4 chip and FPGA Xilinx Spartan-6. The OSB and SB boards are connected...Go to contribution page
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Dr Brenda Dingus (Los Alamos National Laboratory)04/08/2015, 16:00In order to observe annihilation and decay of dark matter, several types of potential sources should be considered. Some sources, such as dwarf galaxies, are expected to have very low astrophysical backgrounds but fairly small dark matter densities. Other sources, like the Galactic center, are expected to have larger densities of dark matter but also have more complicated backgrounds from...Go to contribution page
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Ira Jung-Richardt04/08/2015, 16:00The number of very high-energy-gamma-ray (VHE; > 100 GeV) sources has increased steadily in the last decades. The majority of these sources are extended and exhibit detailed structures. These structures and especially their correlations with data from different wavelengths may unveil the processes responsible for the gamma-ray emission. Multi wavelength studies, however, are hampered by the...Go to contribution page
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Adrian Rovero (Instituto de Astronomia y Fisica del Espacio (IAFE, CONICET-UBA))04/08/2015, 16:00Very high energy (VHE > 100 GeV) gamma rays coming from blazars can produce pairs when interacting with the Extragalactic Background Light (EBL), initiating an electromagnetic cascade. For a non-null Intergalactic Magnetic Field (IGMF), this cascade may result in an extended isotropic emission of photons around the source (halo), or in a broadening of the emission beam, depending on the IGMF...Go to contribution page
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Svetlana Rogovaia (IZMIRAN)04/08/2015, 16:00The energy spectra and composition of ultra-high energy cosmic rays are changing in a course of propagation in the expanding Universe filled with background radiation. We use a numerical code for solution of inverse problem for cosmic-ray transport equations that enables the determination of average source spectra of different nuclei from the cosmic ray spectra observed at the Earth. The...Go to contribution page
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Sylvie Dagoret-Campagne (LAL/IN2P3/CNRS)04/08/2015, 16:00Recently, the EUSO-BALLOON instrument, the pathfinder for future space telescopes of the JEM-EUSO family, has been flown during one night in the stratosphere by CNES. The recording of light intensity emitted from earth or its atmosphere by its fast and high-resolution pixel UV camera was one of the main goals of this mission. We present an analysis on the in-flight UV camera calibration...Go to contribution page
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Hiroki ROKUJO (Nagoya University)04/08/2015, 16:00Gamma-Ray Astro-Imager with Nuclear Emulsion (GRAINE) is a project of cosmic gamma-ray observation using a balloon-borne emulsion detector. The angular resolution of the emulsion gamma-ray telescope (0.08$^{\circ}$ @ 1-2 GeV) is one order of magnitude better than that of the Fermi-LAT. In addition, it has the polarization sensitivity using the pair creation mode. GRAINE aims at high-resolution...Go to contribution page
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Michał Ostrowski (Astronomical Observatory of the Jagiellonian University)04/08/2015, 16:00The prototype of a Davies-Cotton small size telescope (SST-1M) has been designed and developed by a consortium of Polish and Swiss institutions and proposed for the Cherenkov Telescope Array (CTA) observatory. The main purpose of the optical subsystem is to focus the Cherenkov light emitted by extensive air showers in the atmosphere onto the focal plane detectors. The main component of the...Go to contribution page
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Masahiro Teshima (Max-Planck-Institute for Physics)04/08/2015, 16:00Development of Slow Control Boards for the Large Size Telescopes of the Cherenkov Telescope Array Authors: Daniela Hadasch (1), Yusuke Konno (2), Takayuki Saito (2), Hideyuki Ohoka (1), Hidetoshi Kubo (2), Daisuke Nakajima (1), and Masahiro Teshima (1,3) for the CTA Consortium Emails: hadasch@icrr.u-tokyo.ac.jp, konno@cr.scphys.kyoto-u.ac.jp, tysaito@cr.scphys.kyoto-u.ac.jp,...Go to contribution page
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Mr Shu Masuda (Kyoto University)04/08/2015, 16:00The Cherenkov Telescope Array (CTA) is the next generation ground-based very high energy gamma-ray observatory. The Large-Sized Telescope (LST) of CTA targets 20 GeV – 1 TeV gamma rays and has 1855 photomultiplier tubes (PMTs) installed in the focal plane camera. With the 23 m mirror dish, the night sky background rate amounts to ~200 MHz per pixel. In order to record clean images of gamma-ray...Go to contribution page
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Michal Dyrda (Institute of Nuclear Physics PAS)04/08/2015, 16:00The Cherenkov Telescope Array (CTA) very high-energy gamma-ray observatory will consist of about a hundred of imaging atmospheric Cherenkov telescopes (IACTs) of different sizes, with a total reflective area of about 10,000 m2. Here we present a novel technology for the production of IACT mirrors that has been developed in the Institute of Nuclear Physics PAS in Krakow, Poland. The mirrors are...Go to contribution page
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Prof. David Eichler (Ben Gurion University)04/08/2015, 16:00The possibilities are considered that ultrahigh energy cosmic rays, even at the highest energy, originate a) in our Galaxy and b) specifically at the Fermi bubble.Go to contribution page
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Anatoly Petrukhin (National Research Nuclear University MEPhI)04/08/2015, 16:00Results on EAS study with a novel type of detector array PRISMA-32 sensitive to accompanying EAS thermal neutron is presented. The array is running in MEPhI (Moscow, Russia) since February, 2012. Comparison with a full-scale Monte Carlo simulation of the experiment using GEANT4 and CORSIKA codes is also shown. It is demonstrated that absolute number of recorded thermal neutrons is in a good...Go to contribution page
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Dr Mahendra Kumar Richharia (Govt. Model Science College, Jabalpur, (M.P.), India)04/08/2015, 16:00The tri-diurnal and quart diurnal anisotropy of cosmic ray intensity have been investigated during the solar cycle 21-22 using the neutron monitor data recorded at different latitudes on sixty geomagnetically quiet days in a year. It has been observed that in spite of the abrupt changes in the amplitude and phase of tri-diurnal and quart diurnal anisotropy in cosmic ray intensity, the phase of...Go to contribution page
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Dr Shoko Miyake (National Institute of Technology, Ibaraki College)04/08/2015, 16:00Supernova remnants (SNRs) are believed to be the sources of galactic cosmic rays (GCRs). Occurrences of supernovae are obviously discrete in both space and time. Hence we have to take into account this discreteness of the SN occurrences when we investigate the propagation process of GCRs from parent SNRs to the solar system. Recently, we proposed a new and fully three-dimensional numerical...Go to contribution page
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Rahul Kumar (Ben Gurion University)04/08/2015, 16:00The dynamics of two initially unmagnetized relativistic counter-streaming homogeneous ion-electron plasma beams are simulated in two dimensions using the particle-in-cell (PIC) method. It is shown that current laments, which form due to the Weibel instability, develop a large scale longitudinal electric eld in the direction opposite to the current carried by the laments as predicted by...Go to contribution page
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Cyril Trichard (LAPP)04/08/2015, 16:00For the current generation of Imaging Atmospheric Cherenkov Telescopes (IACTs), with their large mirrors and their cameras with fine segmentation of photodetectors, the focusing capability is a relevant issue. The optical system of an IACT has a limited depth of field. Therefore, focusing the telescopes close to the shower maximum in the atmosphere has a significant impact on the data...Go to contribution page
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Prof. Mamadsho Ilolov (Center of Innovative Development of Science and New Technologies of Academy of Sciences of Tajikistan)04/08/2015, 16:00Classical description of diffusion process for scalar flux of particles of cosmic rays $u(\vec{r},t,E)$ is based on equation $$ \frac{\partial u(\vec{r},t,E)}{\partial t}=k(E)u(\vec{r},t,E)+f(\vec{r},t,E),(1) $$ where $E$ - energy of particles, $f(\vec{r},t,E)$ is density distribution of source and $k(E)$ - diffusion coefficient. In the last years it is stated that energy spectrum of...Go to contribution page
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Lawrence Wiencke (Colorado School of Mines)04/08/2015, 16:00The first Balloon-EUSO stratospheric flight launched from Timmins Ontario by the French Space Agency (CNES) recorded artificial tracks and pulses from a laser and optical flashers flown in helicopter (NASA) under the balloon. To make the first measurements of high energy cosmic ray extensive air showers from near space, preparations are underway for a super pressure balloon flight of several...Go to contribution page
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Simon Bacholle (APC- Paris Diderot university)04/08/2015, 16:00EUSO-Balloon is a pathfinder of the JEM-EUSO experiment that is devoted to the observation of UHECRs from space. It operates under a stratospheric balloon at an altitude of ~ 40 km. A first flight took place in August 2014, and gathered information about the UV background in the nadir direction below the flight altitude. Based on these measurements, we investigate the acceptance of a new...Go to contribution page
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Johannes Eser (Colorado School of Mines)04/08/2015, 16:00EUSO-Balloon is a prototype detector of the Extreme Universe Space Observatory on the Japanese Experiment Module (JEM-EUSO). EUSO-Balloon was flown successfully as a balloon payload from the Timmins Stratospheric Balloon Launch Facility in Ontario, Canada on 2014 August 24-25 at an altitude of 38 km. To simulate the optical signatures of UV fluorescence photons emitted from cosmic ray air...Go to contribution page
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Marco Ricci (Istituto Nazionale Fisica Nucleare Frascati (IT))04/08/2015, 16:00
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Ms Gwenhaël de Wasseige (Vrije Universiteit Brussel (VUB))04/08/2015, 16:00Since the end of the eighties and in response to an increase in the total neutrino flux in the Homestake experiment in coincidence with a solar flare, solar neutrino detectors have searched for solar flare signals. Neutrinos from the decay of mesons, which are themselves produced in collisions of accelerated protons with the solar atmosphere, would provide a novel window on the underlying...Go to contribution page
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Dr Kenji Shinozaki (University of Tübingen)04/08/2015, 16:00The Extreme Universe Space Observatory on-board the Japanese Experiment Module (JEM-EUSO) is a mission devoted to the observation of ultra-high energy cosmic rays (UHECRs) around and above the so-called Greisen-Zatseptin-Kuzimin energy at $\sim5\times10^{19}$ eV. The origin of these enigmatically energetic cosmic rays remain an open question since their discovery more than 50 years ago. Very...Go to contribution page
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Igor Oya (DESY Zeuthen)04/08/2015, 16:00The 4 kyr-old supernova remnant (SNR) Puppis A shows strong evidence of interaction between the forward shock and a molecular cloud. The results from Fermi-LAT indicate extended HE gamma-ray emission with a 0.2-100 GeV spectrum that does not significantly deviate from a power law, in contrast to most of the GeV-bright SNRs known to be interacting with molecular clouds. In order to characterize...Go to contribution page
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Agnieszka Gil (Siedlce University)04/08/2015, 16:00After the reversal of solar polarity in 2014, the Sun is now in the early declining phase of cycle 24. Soon after the polarity reversal, the galactic cosmic ray intensity, as observed, e.g., by neutron monitors at several latitudes (cut-off rigidities) depict an exceptionally large variation at the solar rotation period. This recurrence started in mid-2014 and continues until now (the first...Go to contribution page
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Dr Francesco Fenu (University of Torino, INFN Torino), Naoto Sakaki (Osaka City University), Dr Yoshiyuki Takizawa (RIKEN)04/08/2015, 16:00The energy spectrum of ultra-high energy cosmic rays (UHECRs) extends up to ~$10^{20}$ eV, but their sources have not been identified yet. One of the reasons is the small statistics of UHECRs observed with the present ground based experiments, Pierre Auger Observatory and Telescope Array Project. Several projects with larger acceptance are planned to find the sources, among them JEM-EUSO...Go to contribution page
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Michael Alania (Siedlce University)04/08/2015, 16:00In order to create a two dimensional time dependent relatively realistic model of galactic cosmic ray transport we have found delay time between changes of the galactic cosmic ray (GCR) intensity, on the one hand, and various parameters determined conditions in heliosphere- sunspot numbers SN , magnitude B of the interplanetary magnetic field (IMF), solar wind velocity U, variance of the...Go to contribution page
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Dr Alexander Moiseev (CRESST/NASA/GSFC)04/08/2015, 16:00The gamma-ray energy range from a few hundred keV to a few hundred MeV has remained largely unexplored, mainly due to the challenging nature of the measurements, since the pioneering, but limited, observations by COMPTEL on the Compton Gamma-Ray Observatory (1991-2000). This energy range is a transition region between thermal and nonthermal processes, and accurate measurements are critical for...Go to contribution page
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Jens Buß (TU Dortmund)04/08/2015, 16:00The First G-APD Cherenkov telescope (FACT) is dedicated to monitor bright TeV blazars on the northern sky. The use of silicon photon detectors allows for a larger duty cycle, which results in a huge amount of allocated data (~800 GB/night). In order to satisfy its monitoring purpose, changes in the flux of the observed sources have to be registered without delay. This requires a data analysis...Go to contribution page
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marcos López Moya (University Complutense of Madrid)04/08/2015, 16:00The last 20 years have seen the development of new techniques in Astroparticle Physics providing access to the highest end of the electromagnetic spectrum. It has been shown that some sources emit photons up to energies close to 100 TeV. Yet the fluxes of these photons are incredibly low and to go higher in energy new detection techniques are needed. A new technique that would use the new...Go to contribution page
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Marek Siluszyk (Siedlce University)04/08/2015, 16:00Data of Bx, By, Bz components of the Interplanetary Magnetic Field (IMF) have been used to study a features of the IMF turbulences for two positive (A>0) and two negative (A<0) polarity epochs of solar magnetic cycles (1969-2011). We found that the changes of the exponents vy, νz, νx of the Power Spectral Density (PSD) of the By, Bz, Bx components of the IMF show a radical alternation of the...Go to contribution page
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Dr Carl Gilbert Pfendner (Ohio State University (USA))04/08/2015, 16:00The Askaryan Radio Array (ARA) is an ultra-high energy (UHE) cosmic neutrino detector located at the South Pole. The cosmic ray flux cut off above primary energies of $10^{19.5}$ eV leads us to expect a UHE neutrino flux due to the Greisen-Zatsepin-Kuzmin (GZK) effect. The detection of these UHE cosmic neutrinos will add to the understanding of the sources and physics of UHE cosmic rays. The...Go to contribution page
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Gerd Puehlhofer (IAAT)04/08/2015, 16:00The FlashCam group is currently preparing photomultiplier-tube based cameras proposed for the medium-sized telescopes (MST) of the Cherenkov Telescope Array (CTA). The cameras are designed around the FlashCam readout concept which is the first fully-digital readout system for Cherenkov cameras, based on commercial FADCs and FPGAs as key components for the front-end electronics modules and a...Go to contribution page
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Stepan Poluianov (University of Oulu, Finland)04/08/2015, 16:00The era of direct measurements of solar energetic particle (SEP) fluxes is limited to the last few decades and largely overlaps the Modern grand maximum of solar activity with unusually high solar activity. However, for many purposes it is important to know the fluxes of SEPs on much longer time scale. This can be made only using indirect proxies. Terrestrial proxy archives, such as the...Go to contribution page
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Aurore Mathieu04/08/2015, 16:00The ANTARES telescope is well suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky with a high duty cycle. Potential neutrino sources are gamma-ray bursts, core-collapse supernovae and flaring active galactic nuclei. To enhance the sensitivity of ANTARES to such sources, a detection method based on follow-up observations from...Go to contribution page
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ARUNBABU Kollamparambil Paul (Tata Institute of Fundamental Research, Mumbai, India)04/08/2015, 16:00Earth-directed Coronal mass ejections (CMEs) emanating from the Sun and the shock associated with it are the primary drivers of space weather disturbances. Forbush decrease precursors are advance warning of these upcoming magnetic field disturbances. GRAPES-3 tracking muon telescope which is a part of GRAPES-3 experiment located in Ooty, India, provides high statistics measurement of the muon...Go to contribution page
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Anderson Fauth (State University of Campinas)04/08/2015, 16:00Muon rate variations during Forbush decreases registered by the Muonca muon detector have been studied. We discuss the Forbush events which occurred on 13 September and 22 December 2014. Since April 2014, muon telescopes located at State University of Campinas, Brazil, inside the South Atlantic Anomaly, has been recording the flux of single muons. The Muonca experiment consists of four modular...Go to contribution page
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Dr Ivan Petukhov (Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS)04/08/2015, 16:00Calculation of cosmic ray intensity in a magnetic cloud is realized. It is supposed that the magnetic cloud near the Sun has the shape of a torus segment with typical structure of the magnetic field (magnetic field rope). The magnetic cloud is located in the coronal mass ejection having distribution of movement velocity by radius. The subsequent propagation of ejection in interplanetary space...Go to contribution page
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Nicola Tomassetti (Centre National de la Recherche Scientifique (FR))04/08/2015, 16:00Abundances and energy spectra of cosmic ray nuclei are being measured with high accuracy by the AMS experiment. These observations can provide tight constraints to the propagation models of galactic cosmic rays. In the view of the release of these data, I present an evaluation of the model uncertainties associated to the cross-sections for secondary production of Li-Be-B nuclei in cosmic rays....Go to contribution page
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Simon Thomas (University College London)04/08/2015, 16:00Galactic cosmic ray (GCR) flux is modulated by the heliospheric magnetic field (HMF) over decadal time scales, due to long-term, global HMF variations, but also over time scales of a few hours due to structures crossing Earth such as coronal mass ejections or the heliospheric current sheet (HCS). The HCS separates the outward and inward polarities of magnetic field from the Sun and hence is a...Go to contribution page
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Maxim Pshirkov (SAI Moscow State University)04/08/2015, 16:00Theories of galaxy formation predict the existence of extended gas halo around spiral galaxies. If there are 10-100 nG magnetic fields at several ten kpc distances from the galaxies, extended galactic cosmic ray (CR) haloes could also exist. Galactic CRs could interact with the tenuous hot halo gas to produce observable $\gamma$-rays. In this paper we have performed search for such a halo...Go to contribution page
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Axel Donath (MPI for Nuclear Physics, Heidelberg), Christoph Deil (MPI for Nuclear Physics, Heidelberg)04/08/2015, 16:00In the past decade imaging atmospheric Cherenkov telescope arrays such as H.E.S.S., MAGIC, VERITAS, as well as the Fermi-LAT space telescope have provided us with detailed images and spectra of the gamma-ray universe for the first time. Currently the gamma-ray community is preparing to build the next-generation Cherenkov Telecope Array (CTA), which will be operated as an open...Go to contribution page
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Prof. Philip Von Doetinchem (University of Hawaii at Manoa)04/08/2015, 16:00The GAPS experiment is foreseen to carry out a dark matter search by measuring low-energy cosmic ray antideuterons and antiprotons with a novel detection approach. It will provide a new avenue to access a wide range of different dark matter models and masses from about 10GeV to 1TeV. The theoretically predicted antideuteron flux resulting from secondary interactions of primary cosmic rays...Go to contribution page
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Mikhail Krainev (Lebedev Physical Institute, Moscow, Russia)04/08/2015, 16:00Recently the maximum phase of the current solar cycle (SC) 24, in many relations anomalous when compared with solar cycles of the second half of the 20-th century, came to the end. The corresponding phase in the GCR intensity cycle is also in progress. In this paper we study different aspects of the sunspot and GCR behavior around this phase. First, the amplitudes of the SC 24 in the solar...Go to contribution page
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Jacek Szabelski (National Centre for Nuclear Research)04/08/2015, 16:00In low background underground laboratories neutrons create important background in experiments searching for very rare events. These neutrons might origin from incoherent radioactive decays or large number of neutrons might be produced in coherent way in muon induced cascades. Neutrons produced in muon cascades might have significantly larger energies than those from radioactive sources. We...Go to contribution page
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Michael Karus (Karlsruhe Institute of Technology)04/08/2015, 16:00In order to unveil the mystery of ultra-high energy cosmic rays (UHECRs), JEM-EUSO (Extreme Universe Space Observatory on-board Japanese Experiment Module) will observe extensive air showers induced by UHECRs from the International Space Station (ISS) orbit with a huge acceptance. The telescope will consist of Fresnel optics and a focal surface detector with 5,000 multi-anode photomultiplier...Go to contribution page
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Dr Christoph Deil (MPI for Nuclear Physics, Heidelberg)04/08/2015, 16:00Collaborations managing Cherenkov telescope arrays (presently H.E.S.S., VERITAS, and MAGIC) own their data and software in private servers, only accessible to their members. However, the upcoming Cherenkov Telescope Array (CTA) will operate as an observatory, calling for powerful high-level science tools usable by the whole astronomical community. We report on the efforts within the...Go to contribution page
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Dr Robert Parsons (Max Planck Institute for Nuclear Physics)04/08/2015, 16:00The H.E.S.S. VHE gamma-ray telescope has added a fifth telescope of 600 m^2 mirror area to the centre of the 4 existing telescopes, lowering its energy threshold to the sub-100 GeV range and becoming the first operational IACT array using multiple telescope designs. In order to properly access this low energy range however, some adaptation must be made to the existing event analysis. We...Go to contribution page
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Mario Nicola Mazziotta (Universita e INFN, Bari (IT))04/08/2015, 16:00The measured fluxes of secondary particles produced by the interactions of cosmic rays with the astronomical environment are often used to infer some of their properties. In this work we investigate the production of secondary particles in inelastic hadronic interactions between several cosmic rays species of projectiles and different target nuclei of the interstellar medium. The yields of...Go to contribution page
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Bruno Khelifi (APC, IN2P3/CNRS)04/08/2015, 16:00The H.E.S.S. (High Energy Stereoscopic System) experiment is dedicated to the observation of very high energy gamma-rays using the Imaging Atmospheric Cherenkov Technique. Since 2012, the array of 4 telescopes of 12m diameter (CT1-4) is functioning with a fifth telescope, CT5, of 23m diameter. The full array allows now to observe gamma-rays down to few tens of GeV. With this hybrid array of...Go to contribution page
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Alain Delbart (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))04/08/2015, 16:00Gamma-ray astronomy allows us to explore the non-thermal emissions and magnetic field configuration of objects such as Active Galactic Nuclei (AGN), Gamma Ray Bursts (GRB) and pulsars. Presently, there is a sensitivity gap for gamma rays between 1 MeV and 100 MeV. Additionally, there is no polarisation measurement above 1 MeV, although such a measurement could shed light on emission...Go to contribution page
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Igor Oya (DESY Zeuthen)04/08/2015, 16:00HESS J1641-463 is a unique source discovered by the H.E.S.S. telescope array in the very-high energy (VHE, E >= 0.1 TeV) domain. The source had been previously hidden in the extended tail of emission from the bright nearby source HESS J1640-465. However, the analysis of the VHE data from the region at energies above 4 TeV revealed this new source at a significance level of 8.5 sigma. HESS...Go to contribution page
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Barbara Patricelli (University of Pisa and INFN Pisa)04/08/2015, 16:00Second-generation gravitational interferometers, such as Advanced LIGO and Advanced Virgo, will soon reach sensitivities sufficient to detect gravitational waves directly for the first time and open a new era in the multi-messenger investigations of the cosmos. The most violent and energetic astrophysical phenomena, including the mergers of compact objects or the core collapse of massive...Go to contribution page
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Daniel Nieto Castano (Columbia University)04/08/2015, 16:00The distribution of dark matter in the Galaxy, according to state-of-the-art simulations, shows not only a smooth halo component but also a rich substructure where a hierarchy of dark matter subhalos of different masses is found. We present a search for potential dark matter subhalos in our Galaxy exploiting the high (HE, 100 MeV -- 100 GeV) and very-high-energy (VHE, >100 GeV) gamma-ray...Go to contribution page
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Igor Yashin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))04/08/2015, 16:00The key advantage of the TAIGA gamma-ray observatory is a hybrid operation of wide-angle and narrow-angle detectors of the Tunka-HiSCORE and Tunka-IACT. The first IACT telescope of TAIGA project is under construction. The reflector of the telescope will have area of 10 m2 and a focus of 4.75 m. Imaging camera consists of about 540 PMT-based pixels with 0.36 degree field of view. Total FOV...Go to contribution page
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Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00The JEM-EUSO Atmospheric Monitoring System (AMS) consists of a bi-spectral Infrared Camera and a LIDAR device that are being fully designed under space qualification to fulfil the scientific requirements of this space mission. An understanding of the atmospheric conditions in the Field of View (FoV) of the telescope is mandatory for a space-based mission which aims to detect Ultra-High Energy...Go to contribution page
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Dr Francois Brun (CEA-Saclay)04/08/2015, 16:00Imaging Atmospheric Cherenkov Telescopes (IACTs), with their high sensitivity and large field-of-views, are ideal instruments to study the universe in VHE $\gamma$-rays. IACTs image Cherenkov light emitted by $\gamma$-rays from induced particle cascades, developing in the atmosphere. The sensitivity of the IACTs depends critically on their capability to reduce the background caused by the much...Go to contribution page
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Jean Ballet (CEA Saclay)04/08/2015, 16:00The Fermi Large Area Telescope has been routinely gathering science data since August 2008, surveying the full sky every three hours. The current source catalog (3FGL, Acero et al. 2015, arxiv 1501.02003) is based on four years of data. Besides a longer time interval, the next source catalog will be based on the new Pass 8 data, which introduces a number of improvements at all energies, and...Go to contribution page
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Christoph Tönnis (Universitat de Valencia)04/08/2015, 16:00The ANTARES neutrino telescope is a water Cherenkov detector and currently the largest operating neutrino telescope in the Northern Hemisphere. One of the main scientific goals of ANTARES is the indirect search for dark matter, as the Weakly Interacting Massive Particle (WIMP). WIMPs could scatter on normal matter and therefore be gravitational bound in massive astronomical objects like the...Go to contribution page
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Nicola Tomassetti (Centre National de la Recherche Scientifique (FR))04/08/2015, 16:00The AMS Collaboration has recently released precision data on cosmic ray (CR) leptons and protons at high energies. Interesting progresses have also been made on the measurement of CR nuclei, such as the boron-to-carbon ratio or the lithium spectrum, up to ~ TeV/nucleon energies. In order to provide a description these data, I consider a diffusion model of CR propagation which allows for...Go to contribution page
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Imen Al Samarai, Olivier Deligny (CNRS/IN2P3)04/08/2015, 16:00A potential detection technique of ultra-high energy cosmic rays would be the use of the molecular Bremsstrahlung radiation emitted by low-energy electrons left after the passage of the showers in the atmosphere. The emission mechanism is expected from quasi-elastic collisions of electrons produced in the shower by the ionisation of the molecules in the atmosphere. Given the low energy of the...Go to contribution page
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Mr Alejandro Guzman (Institute of Astronomy and Astrophysics, University of Tübingen)04/08/2015, 16:00Cosmic rays with energies exceeding $10^{18}$ eV, usually defined as Ultra High Energy Cosmic Rays (UHECRs), allow the possibility to study physics at energies well beyond man made accelerators. State of the art UHECR detectors have reached unprecedented exposures and have pioneered the field of Extreme Energy Cosmic Rays (EECR), cosmic rays with energies exceeding $5\times 10^{19}$eV. The...Go to contribution page
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Veronique Van Elewyck (APC, Universite Paris Diderot)04/08/2015, 16:00Cataclysmic cosmic events can be plausible sources of both gravitational waves (GW) and high energy neutrinos (HEN), alternative cosmic messengers carrying information from the innermost regions of the astrophysical engines. Possible sources include long and short gamma-ray bursts (GRBs) but also low-luminosity or choked GRBs, with no or low gamma-ray emissions. The ANTARES Neutrino...Go to contribution page
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Dr Kajino Fumiyoshi (Konan University)04/08/2015, 16:00KLYPVE is a Russian science mission to detect ultra-high energy cosmic rays (UHECRs) above 5 1019 eV. It will be attached to the Russian MRM-1 module onboard International Space Station. The K-EUSO project is a result of the joint efforts of the JEM-EUSO collaboration to improve performance of the KLYPVE mission, by employing the technologies (a corrector Fresnel lens, the Focal surface...Go to contribution page
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Dominik Stransky04/08/2015, 16:00KM3NeT is a future research infrastructure hosting the next-generation underwater neutrino observatory in the Mediterranean Sea. Within KM3NeT, the ARCA detector will be devoted to the observation of high-energy cosmic neutrinos both in diffuse and point source mode. A major objective of KM3NeT/ARCA is to establish all-flavour neutrino astronomy. The observation of cosmic neutrinos has been...Go to contribution page
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Javier Barrios Martí (IFIC - CSIC)04/08/2015, 16:00KM3NeT is a large research infrastructure that will consist of a network of deep-sea neutrino telescopes in the Mediterranean Sea, of which the ARCA detector installed in the CapoPassero site (Italy) is optimised for studying high-energy neutrinos of cosmic origin. Thanks to its geographical location on the Northern hemisphere, KM3NeT can observe most of the Galactic Plane, including the...Go to contribution page
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Javier Barrios Martí (IFIC - CSIC)04/08/2015, 16:00Motivated by an accumulation of events close to the Galactic center in the High Energy Starting Events (HESE) reported by the IceCube Collaboration, a search for point-like sources up to an extension of a few degrees in a wide region around the Galactic center has been performed using the ANTARES neutrino telescope. Different spectral indexes for the energy spectra of the sources, in addition...Go to contribution page
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Andreas Haungs (Karlsruhe Institute of Technology), Donghwa Kang (Albert-Ludwigs-Universitaet Freiburg), Zhaoyang Feng (IHEP)04/08/2015, 16:00Diffuse ultra-high energy gamma radiation can arise from a variety of astrophysical sources. Using the data collected by the KASCADE air shower array, the 90\% C.L. upper limit to the flux of ultra-high energy gamma-rays in the primary cosmic-ray flux is determined from 200 TeV up to 20 PeV. The upper limit on the fraction of gamma-rays to cosmic-rays in energy range 1.5 and 3.7 PeV...Go to contribution page
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Dr Matthew Wood (SLAC)04/08/2015, 16:00The existence of a non-baryonic, neutral and weakly-interacting dark matter component in the Universe is supported by an overwhelming body of experimental evidence. A promising way to try and identify the dark matter particle, and to measure its properties, is to search for the gamma rays produced by annihilation and/or decay in dark matter overdensities in the local Universe. Gamma-ray...Go to contribution page
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Ms Jill Chevalier (Laboratoire d’Annecy-le-Vieux de Physique des Particules, Université de Savoie, CNRS/IN2P3, F-74941 Annecy-le-Vieux, France)04/08/2015, 16:00Time variability of the photon flux is a known feature of AGN and in particular of blazars. The high frequency peaked BL Lac object PKS 2155-304 is one of the brightest source in the TeV band and has been monitored regularly with different instruments and in particular with the H.E.S.S. experiment above 200 GeV for more than 11 years. These data together with the observations of other...Go to contribution page
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Sergio Dasso (IAFE - CONICET - UBA)04/08/2015, 16:00The low energy modes of the Surface Detector array of the Pierre Auger Observatory record variations in the flux of low energy secondary particles with extreme detail. In these modes, the rate of signals above a very low threshold (scalers) and the calibration charge histograms of the individual pulses detected by each water-Cherenkov detector are used. Previous work has studied the flux of...Go to contribution page
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David Kieda (University of Utah)04/08/2015, 16:00One of the most enigmatic TeV binary systems, LS I +61 303 exhibits a high degree of modulation from optical to TeV over a single orbit of ~26.5 days. LS I +61 303 also exhibits a ~4.5 year modulation in radio, X-Ray and GeV emission which is yet to be seen in TeV gamma rays. LS I +61 303 has been observed by both VERITAS (85 GeV-30 TeV) and multi-wavelength partners (optical - GeV). The...Go to contribution page
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Yutaka Ohira (Aoyama Gakuin University)04/08/2015, 16:00The interstellar medium and ejecta of supernova are not always completely ionized. Such partially ionized plasmas are though to be unsuitable for cosmic ray acceleration. In order to study shock structures of collisionless shocks in partially ionized plasmas, we perform two-dimensional hybrid simulations. We find that large density fluctuations and large magnetic fields fluctuations are...Go to contribution page
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ryoichi katsuya04/08/2015, 16:00Cosmic ray nuclear composition has a very important role to reveal the origin of cosmic rays. Especially, composition with energy around knee region must be related to the mechanisms of particle accelerations. In the BASJE (Borivian Air Shower Joint Experiment) group, we constructed new large air shower array at Mount Chacaltaya (5,200m above sea level) to observe air showers with...Go to contribution page
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PRAVATA KUMAR MOHANTY (Tata Institute of Fundamental Research, Mumbai, India)04/08/2015, 16:00Harmonics in the cosmic ray solar diurnal anisotropy up to third have been experimentally observed. Very high statistics is required to investigate higher harmonics because of exceedingly small amplitudes. The GRAPES-3 experiment located in Ooty, India contains a large area (560~m$^2$) tracking muon telescope that provides a high statistical record of the muon flux ($\sim$4$\times 10^9$...Go to contribution page
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David Altmann (DESY)04/08/2015, 16:00Many Galactic sources of gamma rays, like supernova remnants, are suspected to also produce high-energy neutrinos with a typical high-energy cutoff below 100 TeV. For the IceCube Neutrino Observatory, located at the South Pole, this is challenging due to the very large background of atmospheric muons at these energies in the southern hemisphere which covers the inner part of the Galactic plane...Go to contribution page
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Dr Marco Ricci (INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy)04/08/2015, 16:00For any experiment aiming at the observation of Ultra High Energy Cosmic Rays (UHECR's) from space, one key measurement is related to the UV background produced in Earth atmosphere. In view of the planned missions (KLYPVE/K-EUSO, JEM-EUSO) at the International Space Station (ISS), a small, compact UV telescope, Mini-EUSO, is being developed by the JEM-EUSO International Collaboration to be...Go to contribution page
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Rendani Nndanganeni (North-West University (Potchefstroom campus) South Africa)04/08/2015, 16:00The challenge regarding the modeling of the solar modulation of Jovian electrons lies in determining a reasonable source function which on its part influences the energy range where these particles dominate in the heliosphere. Another controversial issue is what the spectral index of these electrons should be, from the lowest to the highest energies of relevance to solar modulation. If this...Go to contribution page
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Emanuele Grimaldo04/08/2015, 16:00Particles accelerated at the shocks forming at the wind collision region of a binary system of massive stars are expected to produce $\gamma$-rays dominantly either through inverse Compton scattering of electrons in the stellar radiation fields, or through the decay of neutral pions produced in proton-proton collisions. Up to now, the only colliding wind binary (CWB) associated with...Go to contribution page
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Dr Serkan Golge (Space Radiation Analysis Group, NASA Johnson Space Center, Houston, TX, USA)04/08/2015, 16:00The Badhwar-O'Neill (BON) Galactic Cosmic Ray (GCR) flux model is used by NASA to certify microelectronic systems and in the analysis of radiation health risks for human space flight missions. Of special interest to NASA is the kinetic energy region below 4.0 GeV/n due to the fact that exposure from GCR behind shielding (e.g. inside a space vehicle) is heavily influenced by the GCR particles...Go to contribution page
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Mr Ibrahim Daniel Torres Aguilar (HAWC), Tomás Capistrán (INAOE)04/08/2015, 16:00The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is located at an altitude of 4100 meters in Sierra Negra, Puebla, Mexico. HAWC is an air shower array of 300 water Cherenkov detectors (WCDs), each with 4 photomultiplier tubes (PMTs). Because the observatory is sensitive to air showers produced by cosmic rays and gamma rays, one of the main tasks in the analysis of gamma-ray...Go to contribution page
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Simon Mackovjak (ISDC - Data Centre for Astrophysics, Astronomy Department, University of Geneva, Switzerland)04/08/2015, 16:00Precise characterization of the Earth night side UV background is essential for observation of the ultra-high-energy cosmic ray induced extensive air showers (EAS) from the space. We have analyzed data from the flight of EUSO-Balloon pathfinder mission that took place near Timmins (Canada) in the moonless night from 24$^{th}$ to 25$^{th}$ August 2014. The EUSO-balloon telescope imaged the UV...Go to contribution page
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Prof. H.S, Ahluwalia (University of New Mexico)04/08/2015, 16:00The timeline of solar activity is discussed with data for the annual mean north-south excess (NSE) of hemispheric sunspot numbers (SSNs) for 1945-2014, covering five SSN cycles (18-23) and the rising phase of cycle 24. We report the results of our study of the relation between NSE and galactic cosmic ray (GCR) modulation at 1 a.u. The significance of our results is discussed.Go to contribution page
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Claudio Kopper (University of Alberta), Naoko Kurahashi Neilson (Drexel University)04/08/2015, 16:00The spectrum of cosmic rays includes the most energetic particles ever observed. The mechanism of their acceleration and their sources are, however, still mostly unknown. Observing astrophysical neutrinos can help solve this problem. Because neutrinos are produced in hadronic interactions and are neither absorbed nor deflected, they will point directly back to their source. This contribution...Go to contribution page
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JANE MACGIBBON (University of North Florida)04/08/2015, 16:00Many early universe theories predict the creation of Primordial Black Holes (PBHs). PBHs could have masses ranging from the Planck mass to 10^5 solar masses or higher depending on the size of the universe at formation. Due to quantum-gravitational effects, a black hole is expected to have a temperature which is inversely proportional to its mass. Hence a sufficiently small black hole will...Go to contribution page
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Christoph Deil (MPI for Nuclear Physics, Heidelberg)04/08/2015, 16:00The Cherenkov Telescope Array (CTA), a ground-based facility for very-high-energy (VHE) gamma-ray astronomy, will operate as an open observatory serving a wide scientific community to explore and to study the non-thermal universe. Open community access is a novelty in this domain, putting a challenge on the implementation of services that make VHE gamma-ray astronomy as accessible as any other...Go to contribution page
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Ralph Bird (UCD Dublin)04/08/2015, 16:00The Earth is subjected to an isotropic flux of very-high-energy cosmic rays (VHE, E > 100 GeV) unless they are obscured by an object, such as the Moon. The Moon creates a deficit in the uniform flux and, since cosmic rays are charged, this deficit is deflected by the Earth's magnetic field, enabling the rigidity of the obstructed cosmic rays to be determined. Measurement of the relative...Go to contribution page
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Renat Sibatov (Ulyanovsk State University)04/08/2015, 16:00One of the hypotheses about nature of ultra-high energetic tails of cosmic ray (CR) spectrum assumes extragalactic origin. Intergalactic CRs includes particles both emitted and reflected by galaxies. The particles entering and leaving galaxies undergo additional acceleration depending on the time spent there. One can assume, that such particles participate, at least partially, in forming the...Go to contribution page
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Jakub Vicha (Acad. of Sciences of the Czech Rep. (CZ))04/08/2015, 16:00The mass composition of ultra-high energy cosmic rays can be studied from the distributions of the depth of shower maximum and/or of the muon shower size. We study the dependence of the mean muon shower size on the depth of shower maximum in more details. Air showers induced by four different primaries were simulated with two models of hadronic interactions already tuned with LHC data. The...Go to contribution page
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Prof. OLEG DALKAROV (P.N.Lebedev Physical Institute)04/08/2015, 16:00A study of gravitational properties of matter and a precision test of Weak Equivalence Principal (WEP) presents a fundamental interest. We have shown the possibility of investigation of quantum gravitational states of matter by the example of helium atom. We examined the capability of the existence of helium quantum states in the gravitational field of a cold neutron star. Observation of such...Go to contribution page
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Mikhail Krainev (Lebedev Physical Institute, Moscow, Russia)04/08/2015, 16:00Quasi-biennial oscillation (QBO) is a well-known quasi-periodical variation with characteristic time 0.5-4 years in different solar, heliospheric and cosmic ray characteristics. Recently it has been shown that there is rather high anticorrelation between the QBOs in GCR intensity near the Earth and in the strength of the heliospheric magnetic field. Besides, it was suggested that both...Go to contribution page
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Prof. Jing Huang (Institute of High Energy Physics, CAS), Dr Ying Zhang (Institute of High Energy Physics)04/08/2015, 16:00CR spectrum may be not expressed by a simple power law in a certain energy region. Recently, PAMELA, ATIC and CREAM presented a rigidity dependent spectral breaks and remarkable hardening after the breaks in the rigidity region above about 100 GV. On the other hand, the all-particle energy spectrum of primary cosmic rays observed in a wide range from 10^14 to 10^17 eV with the Tibet-III AS...Go to contribution page
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Mr Christopher Bochenek (University of Chicago)04/08/2015, 16:00It is well known that, for bright gamma-ray pulsars with high statistics above a few GeV, the phase averaged spectral energy distribution (SED) is harder than a simple exponential cutoff above the break. We perform phase-resolved spectral analyses of bright gamma-ray pulsars and demonstrate that, even over narrow phase ranges, the SEDs of gamma-ray pulsars above the break energy are harder...Go to contribution page
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Blahoslav Pastirčák (Institute of Experimental Physics SAS, Košice, Slovakia)04/08/2015, 16:00JEM-EUSO experiment will observe UV light created by extensive air showers initiated by ultra high energy cosmic rays (UHECR). Reconstruction of UHECR particle direction from detected signal depends also on the level of signal background, which can vary in time and with location. We developed an alternative pattern recognition (PR) method based on Hough transformation besides to existing...Go to contribution page
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Prof. Anatoly Petrukhin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))04/08/2015, 16:00EAS investigation is the only way to obtain information about PCR energy spectrum and composition above the knee. Usually it is assumed that primary particle energy is equal to EAS energy, which is evaluated from measured EAS parameters. At that, it is also assumed that interaction model at such energies is known as a continuation of models verified at accelerator energies. Therefore it is...Go to contribution page
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Mr camille catalano (irap)04/08/2015, 16:00EUSO-BALLOON is a prototype of the JEM-EUSO detector, to perform an end-to-end test of the subsystems and components, and to prove the entire detection chain and measure the atmospheric and terrestrial UV background. In August 2014, the instrument was launched in collaboration with the French Space Agency CNES for its maiden flight. This article describes the optics of EUSO-BALLOON,...Go to contribution page
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Jose Luis Sánchez (University of León), Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00The EUSO-balloon, pathfinder for the JEM-EUSO Space Mission, was launched during the night of August 24, 2014. The main aim of the flight was to test all the technologies developed for JEM-EUSO under very severe operating conditions (Stratosphere ~ 40 km altitude), partly representative of the working conditions in ISS. The IR camera onboard EUSO-Balloon is used to obtain the Cloud Top Height...Go to contribution page
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Alessio Porcelli (Universite de Geneve (CH))04/08/2015, 16:00The single mirror small-size telescope (SST-1M) is one of the telescope projects being proposed for the Cherenkov Telescope Array (CTA) observatory by a sub-consortium of Polish and Swiss institutions. The SST-1M prototype structure is currently being constructed at the Institute of Nuclear Physics in Cracow, Poland, while the camera will be assembled at the University of Geneva, Switzerland....Go to contribution page
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nahee park (University of Chicago)04/08/2015, 16:00VERITAS is a ground-based gamma-ray instrument operating at the Fred Lawrence Whipple Observatory in southern Arizona. With an array of four imaging atmospheric Cherenkov technique (IACT) telescopes, VERITAS is designed to measure gamma rays between ~85 GeV and ~30 TeV with a sensitivity to detect a point source with a flux of 1% of the Crab nebula flux within 25 hours. Since its first light...Go to contribution page
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Dr Giovanni Lamanna (Centre National de la Recherche Scientifique (FR))04/08/2015, 16:00The most massive stars appear grouped in giant molecular clouds. Their strong wind activity generates large structures known as super bubbles and induces collective effects which could accelerate particles up to the high energy and produce gamma-rays. The best objects to observe these effects are young massive star clusters in which no supernova explosion has occurred yet. Such star...Go to contribution page
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1075. Photoelectron counting rate measurements in the UV camera during the EUSO-BALLOON night flightJulio Arturo Rabanal Reina (LAL/IN2P3/CNRS)04/08/2015, 16:00EUSO-Balloon is a prototype for the future space telescope JEM-EUSO aiming to detect UV emissions in the Earth's atmosphere (cosmic air showers, meteorites, airglow, etc). It successfully completed its first flight operated by the CNES over Ontario, Canada, in August 2014. One of the main goals is to measure the photoelectron rate performed by its UV camera. These measurements, corrected from...Go to contribution page
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Mario Bertaina (Univ. & INFN Torino)04/08/2015, 16:00EUSO-Balloon is a pathfinder mission for JEM-EUSO with main objective to perform a full scale end-to-end test of all the key technologies and instrumentation of JEM-EUSO detectors, as well as a detailed and precise measurement of the UV background in different atmospheric and ground conditions, and a first measurement of air shower tracks from the edge of space. For its first flight,...Go to contribution page
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Alexandre Marcowith (LUPM Université Montpellier)04/08/2015, 16:00
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John Pretz (Pennsylvania State University)04/08/2015, 16:00Isotropic diffuse gamma-ray emission above 100 GeV is produced by unresolved extragalactic objects such as active galactic nuclei, as well as source of truly diffuse emission such as the electromagnetic cascades produced by very high energy gamma rays and cosmic rays. Isotropic diffuse gamma-ray emission has been observed up to nearly 1 TeV. An Observation or limit above this energy can...Go to contribution page
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Dr Akira Okumura (Solar-Terrestrial Environment Laboratory, Nagoya University)04/08/2015, 16:00Reflective light concentrators with hexagonal entrance and exit apertures are frequently used at the focal planes of gamma-ray telescopes in order to reduce their dead area caused by the geometries of the photodetectors, as well as to reduce stray light entering at large incident angles. The focal planes of the Large-Sized Telescopes (LSTs) of the Cherenkov Telescope Array (CTA) will also be...Go to contribution page
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Jan Luenemann (Vrije Universiteit Brussel)04/08/2015, 16:00In high energy physics many background dominated analyses suffer from limited statistics in simulation: With increasing efficiency of the event selection the simulated samples are reduced so that in many cases the event number at final analysis level is very low. Due to limited computational resources the production of more simulation is not always feasible. In this cases it is helpful to...Go to contribution page
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David Ruffolo (Mahidol University)04/08/2015, 16:00Nonlinear guiding center (NLGC) theory has been used to explain the asymptotic perpendicular diffusion coefficient κ⊥ of energetic charged particles in a turbulent magnetic field, which can be applied to better understand cosmic ray transport. Here we re-derive NLGC, replacing the assumption of diffusive decorrelation with random ballistic decorrelation (RBD), which yields an explicit...Go to contribution page
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Ralph Bird (UCD Dublin)04/08/2015, 16:00The Crab Nebula has long been the standard reference point source for very-high-energy (VHE, E > 100 GeV) gamma-ray observatories such as VERITAS. It has enabled testing and improvement of analysis methods, validation of techniques, and has served as a calibration source. No comparable extended source is known with a high, constant flux and well understood morphology. In order to artificially...Go to contribution page
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Prof. Martin Pohl (DESY)04/08/2015, 16:00The radio spectra of many shell-type supernova remnants show deviations from those expected on theoretical grounds.}{In this paper we determine the effect of stochastic reacceleration on the spectra of electrons in the GeV band and at lower energies, and we investigate whether reacceleration can explain the observed variation in radio spectral indices. We explicitely calculated the momentum...Go to contribution page
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Sebastian Diebold (IAAT)04/08/2015, 16:00The Cherenkov Telescope Array (CTA) is the next generation very high energy gamma-ray air-shower Cherenkov observatory. It will consist of a large number of segmented-mirror telescopes of three different diameters, placed in two locations, one in the northern and one in the southern hemisphere, thus covering the whole sky. The total number of mirror tiles will be of the order of 10.000,...Go to contribution page
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Mr Volker Baum (Johannes Gutenberg-Universität Mainz)04/08/2015, 16:00With a lattice of 5160 photomultiplier tubes, IceCube monitors one cubic kilometer of deep Antarctic ice in order to detect neutrinos via the Cherenkov photons emitted by charged secondaries arising from their interactions in matter. Due to subfreezing ice temperatures, the photomultipliers’ dark noise rates are particularly low. Therefore a collective rate enhancement introduced by...Go to contribution page
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ARUNBABU Kollamparambil Paul (Tata Institute of Fundamental Research, Mumbai, India)04/08/2015, 16:00The relation between the Forbush decreases (FDs) and near-Earth interplanetary magnetic field (IMF) enhancements associated with the solar coronal mass ejections (CMEs) is studied. We have used data from GRAPES-3 tracking muon telescope to identify the Forbush decrease events. We have chosen events that are having a reasonably clean profile, and magnitude $>$ 0.25 %. We have used IMF data from...Go to contribution page
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Dr Ivan Gnesi (Centro "E. Fermi", INFN, University of Turin)04/08/2015, 16:00The monitoring of galactic cosmic ray flux decreases is of interest for the understanding of phenomena that occur on the solar corona, as well as on other observable stars. As it is known, they are related to the emission of mass from the star corona and often related to solar flares, even if such relation is not completely understood. The effect on the solar wind directly affects the...Go to contribution page
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Helena Kruger (North-West University, Potchefstroom)04/08/2015, 16:00The propagation of cosmic rays through the heliosphere is subjected to modulation. This propagation can be described by the Parker Transport Equation. Two simple approximations of this equation are the convection-diffusion and the force-field approaches. The solutions of these equations contain the modulation parameter M and the modulation potential ϕ, respectively. Usoskin et al. (2011) used...Go to contribution page
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Prof. Hiroshi Kojima (Aichi Institute of Technology, Waterloo Road, Aichi, Japan)04/08/2015, 16:00For the investigation of the interactions of galactic cosmic rays with the solar wind plasma and/or interplanetary magnetic field, it is important to know the rigidity dependence of the intensity variations of galactic cosmic rays in detail. In this paper, we have divided the data into two durations of active and calm by a criteria which is based on the data of neutron monitor of the lowest...Go to contribution page
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Steffen Hallmann (ECAP - Univ. Erlangen)04/08/2015, 16:00The ANTARES neutrino telescope, taking data in its final configuration since 2008 at the bottom of the Mediterranean Sea, has since then contributed to the seaches for high-energy neutrino sources. ANTARES has also been able to set constraints on the cosmic neutrino flux. The ANTARES sensitivity for a diffuse neutrino flux with six years of data taking is close to the level of the cosmic...Go to contribution page
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Moritz Hütten (DESY and Humboldt-Universität Berlin)04/08/2015, 16:00Weakly interacting, massive dark matter particles are expected to self-annihilate or decay into high-energy photons, which thereby establish the possibility for indirect detection by gamma-ray telescopes. For probing the dark matter annihilation products, accurate knowledge of the dark matter density distributions is crucial. However, major uncertainties exist in the density profiles of our...Go to contribution page
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Dr Donghwa Kang (Karlsruhe Institute of Technology, Germany)04/08/2015, 16:00Extensive air showers with primary energies around 300 TeV were measured with a large detector array and a muon tracking detector of KASCADE. Using all events in the full KASCADE data set, a search of a pointlike source of high-energy cosmic rays for the northern hemisphere are performed. In addition, a subset of muonless events, i.e., extensive air showers which are more similar to gamma ray...Go to contribution page
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james pepper (IceCube)04/08/2015, 16:00Most searches for Dark Matter primarily focus on the WIMP paradigm, which predicts dark matter masses in the GeV - 10 TeV range. However, these relatively low energy searches continue to produce null results, possibly suggesting that dark matter is something other than WIMPs. Gravitinos, on the other hand, can satisfy the cosmological constraints on dark matter, and decay with a lifetime...Go to contribution page
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Gabriela Emilia Pavalas (Institute for Space Sciences)04/08/2015, 16:00Magnetic monopoles are hypothetical particles predicted to be created in the early Universe in the framework of Grand Unified Theories (GUTs). The signature of the passage of magnetic monopoles in a Cherenkov telescope like ANTARES (Astronomy with a Neutrino Telescope and Abyss environmental RESearch) is expected to be evident and unambiguous, because of the large amount of light emitted...Go to contribution page
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Elisa Pinat04/08/2015, 16:00The IceCube Neutrino Observatory, a cubic kilometer telescope located in the Antarctic ice, offers unique opportunities to study high energy neutrino emission from galactic and extragalactic sources. The Galactic plane is the brightest source of gamma rays in the sky, and it is believed to be also one of the brightest very high energy neutrino sources. The first discovery of an astrophysical...Go to contribution page
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Sandro Kopper (BU Wuppertal)04/08/2015, 16:00Physics theories beyond the Standard Model like Supersymmetry and models with extra dimensions often invoke $\mathbb{Z}_2$-symmetries in order to avoid new couplings that lead to unobserved new physics like unnaturally fast proton decay. This gives rise to the possibility of heavy, new particles being produced in pairs with the lightest of them being (meta-) stable. Thus, under favorable...Go to contribution page
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Chiara Perrina ("La Sapienza" University of Roma & INFN)04/08/2015, 16:00Installed in the Mediterranean Sea, at a depth of $\sim 2.5$ km, ANTARES is the largest undersea neutrino telescope currently operating. Point source searches with neutrino telescopes are normally limited to a fraction of the sky, due to the selection of events where the direction of the neutrino candidate has been reconstructed as coming from below the horizon, usually referred to as...Go to contribution page
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Mr Avery Archer (Washington University in St. Louis)04/08/2015, 16:00Since the 2011 VERITAS discovery of very high energy emission (VHE; E>100 GeV) from the Crab pulsar, there has been concerted effort by the gamma-ray astrophysics community to detect other pulsars in the VHE band in order to place better constraints on emission models. Pulsar modeling demonstrates that much of the magnetosphere is opaque to very high energy photons, limiting emission regions...Go to contribution page
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Rodrigo Gracia (APC)04/08/2015, 16:00We use a two point correlation analysis to look for inhomogeneities in the arrival directions of the high energy muon neutrino candidates detected by the ANTARES neutrino telescope. This approach is complementary to a point source likelihood-based search, which is mainly sensitive to one bright point like source and not to collective effects. We present the results of a search based on...Go to contribution page
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Ms Aera JUNG (AstroParticule et Cosmologie, Univ. Paris Diderot, CNRS/IN2P3, Paris, France)04/08/2015, 16:00The balloon borne experiment, EUSO-Balloon, recorded data to measure the UV background during a moonless night, from an altitude of ~40 km in the nadir direction, with a field of view of ±6deg. In this paper, we investigate the sensitivity of the instrument to coherent fluctuations of this background over areas from ~ $1km^{2}$ up to the entire field of view, on timescales ranging from a few...Go to contribution page
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Ms Meike De With (Deutsches Elektronen-Synchrotron (DE))04/08/2015, 16:00In many models, the self-annihilation of dark matter particles will create neutrinos which can be detected on Earth. An excess flux of these neutrinos is expected from regions of increased dark matter density, like (dwarf) galaxies and galaxy clusters. The IceCube neutrino observatory, a cubic-kilometer neutrino detector at the South Pole, is capable of detecting neutrinos down to energies of...Go to contribution page
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Dr César Alvarez (Facultad de Ciencias en Física y Matemáticas, Universidad Autonóma de Chiapas, México.)04/08/2015, 16:00There are currently over 150 known gamma-ray pulsars. While most of them are detected only from space, at least two are now seen also from the ground. MAGIC and VERITAS have measured the gamma ray pulsed emission of the Crab pulsar up to hundreds of GeV and more recently MAGIC has reported > 1TeV emission. Furthermore, in the southern hemisphere, H.E.S.S. has detected the Vela pulsar above 30...Go to contribution page
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JANE MACGIBBON (University of North Florida)04/08/2015, 16:00Primordial Black Holes (PBHs) are gravitationally collapsed objects that may have been created in the early universe and could have arbitrarily small masses down to the Planck scale. Due to quantum gravitational effects, it is believed that a black hole has a temperature inversely proportional to its mass and will emit all species of fundamental particles thermally. PBHs with initial masses of...Go to contribution page
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Martijn Jongen (Nikhef)04/08/2015, 16:00KM3NeT is the next generation underwater neutrino telescope being installed in the Mediterranean Sea. Its low-energy branch KM3NeT/ORCA will measure neutrinos in the energy range of several GeV, aiming to resolve the long-standing question whether the neutrino mass hierarchy is normal or inverted by measuring matter-induced oscillation effects in atmospheric neutrinos. In the presentation,...Go to contribution page
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Prof. Ding Chen (National Astronomical Observatories, CAS), Prof. Jing Huang (Institute of High Energy Physics, CAS), Dr L.M. Zhai (Institute of High Energy Physics, CAS), Prof. M. Shibata (Facullty of Engineering, Yohohama National University, Yokohama 240-8501, Japan), Dr Y. Katayose (Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan)04/08/2015, 16:00A new hybrid detector system has been constructed by the Tibet ASgamma collaboration in Tibet, China, since 2014 to measure the chemical composition of cosmic rays in the wide energy range including the knee. The new detector system consists of an AS-core detector-grid (YAC-II) to detect a bundle of high-energy shower particles, the Tibet-III AS array and a MD cluster (large underground...Go to contribution page
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Prof. Ding Chen (National Astronomical Observatories, CAS), Prof. Jing Huang (Institute of High Energy Physics, CAS), Prof. M. Shibata (Faculty of Engineering, Yokohama National University, Yokohama.), Dr Xu Chen (Institute of High Energy Physics,)04/08/2015, 16:00The rapidly declining electron flux with the power index of ~3.3 makes it difficult to measure directly with instruments on board balloons and satellites at high energies higher than about 1 TeV. However, the large-area and wide-field EAS arrays could be used to extend cosmic-ray electron spectrum (e+ + e-) measurements up to about 10 TeV or more. The newly upgraded Tibet hybrid AS experiment...Go to contribution page
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Dr Alessio Porcelli (Universite de Geneve (CH))04/08/2015, 16:00The Small-Size Telescopes with single-mirror (SST-1M) is 4 m Davies-Cotton telescope and is among the proposed designs for the Cherenkov Telescope Array (CTA). It is conceived to provide the high-energy ($>$ few TeV) coverage. The SST-1M comprises proven technology for the telescope structure and innovative electronics and photosensors for the camera. Its design is meant to be simple,...Go to contribution page
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Prof. Jacek Niemiec (Institute of Nuclear Physics PAN, Krakow, Poland)04/08/2015, 16:00The nonresonant cosmic-ray-current-driven instability that operates in the precursors of shocks in young supernova remnants may be responsible for magnetic-field amplification, quasithermal plasma heating, and hydrodynamical turbulence, all of which have impact on the shock properties and particle-acceleration processes. The temporal and spatial development of the instability is investigated...Go to contribution page
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Dr Alisson Dal Lago (National Institute for Space Research)04/08/2015, 16:00It is well known that cosmic rays with energies below 100 GeV are significantly modulated by solar wind structures populating the heliosphere, which originate at the Sun. We apply a cross wavelet transform and wavelet coherence for examining relationships in time frequency space between isotropic and anisotropic components of cosmic rays data from the Global Muons Detectors Network (GMDN) and...Go to contribution page
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Agnieszka Gil (Siedlce University)04/08/2015, 16:00We study temporal changes of a behaviour of the power-law rigidity spectrum of the first three harmonics of the 27-day variation of the galactic cosmic rays (GCR) intensity during the solar cycle (SC) no. 24 and compare with other 11-year cycles of solar activity. We show that our recent finding - a hard spectrum of the amplitudes of the 27-day variation of the GCR intensity in maximum epochs...Go to contribution page
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Prof. Ramanath Cowsik (Department of Physics and McDonnell Center for the Space Sciences Washington University, St. Louis, MO 63130)04/08/2015, 16:00In this paper we note that the spectral intensities of antiprotons observed in Galactic cosmic rays in the energy range ~1-100 GeV by BESS and PAMELA instruments display nearly the same spectral shape as that generated by primary cosmic rays through their interaction with matter in the interstellar medium, without any significant modifications. More importantly, a constant residence time of...Go to contribution page
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Mrs Lea Jouvin (APC)04/08/2015, 16:00Spectral extraction in the VHE range is usually performed using the ON-OFF likelihood statistics which is based on the profile likelihood technique. The latter is known to lead to inconsistent estimators in some situations. We present here a systematic MC study of the distribution of fitted spectral parameters for typical observations with the HESS observatory and show that, in some...Go to contribution page
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Jannik Hofestädt (ECAP)04/08/2015, 16:00Existing large-volume neutrino telescopes such as ANTARES and IceCube, as well as the future KM3NeT/ARCA, investigate neutrinos at characteristic particle energies of 10TeV, whereas KM3NeT/ORCA and PINGU will operate around 10GeV to determine the neutrino mass hierarchy using atmospheric neutrinos propagated through the Earth. In this energy regime, intrinsic fluctuations in particle...Go to contribution page
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Prof. INOUE Naoya (Graduate School of Science and Enginnering, SAITAMA University)04/08/2015, 16:00The arrival time distributions of extensive air shower (EAS) secondary particles have been studied in an energy region, E > 10^18eV with the data collected by the Telescope Array scintillator detector array. We present the average shapes of time profiles in ranges of primary particle energy, zenith angle, and core distance. This is a phenomenological study of extensive air shower longitudinal...Go to contribution page
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Alexander Ziegler (ECAP, University of Erlangen-Nuremberg, Germany)04/08/2015, 16:00Current arrays of Imaging Atmospheric Cherenkov Telescopes (IACTs) routinely achieve an astrometric point-source location accuracy of 20-30 seconds of arc (given large photon statistics), which is well below the angular resolution obtained for individual photons. The location accuracy is mainly limited by systematic uncertainties due to possible deformations of the telescopes’ structures,...Go to contribution page
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Tomasz Seredyn (Polish Air Force Academy)04/08/2015, 16:00In the paper we statistically inspect Forbush decreases, CMEs, Solar Flares and geomagnetic variations during the solar cycle 24 and compare them with earlier cycles and discuss Sun-Earth system response to extreme solar events and space weather. Data from different spacecrafts, GOES X-ray and LASCO coronograph images were used together with neutron monitor network recordings. The observed...Go to contribution page
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Dr Zbigniew Kobylinski (Polish Air Force Academy)04/08/2015, 16:00Energetic charged particles of galactic cosmic rays (GCR) and in a extent stronger energetic solar particles penetrate more or less deep into lower atmosphere ionizing the air and affect onto the value and distribution of electric conductivity, the electric field and other atmospheric electric parameters. The response of the atmospheric electric field (AEF) at ground level to the GCR...Go to contribution page
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Artem Bohdan04/08/2015, 16:00We present the analysis of short-time periodic X-ray variability of knots in Centaurus A jet. The analysis is based on observational data from Chandra X-ray Observatory. The search for periodic variability was done using Lomb-Scargle periodogram method. We have found two knots with significant periodic signal. In order to improve signal to noise ratio we propose the procedure where the photons...Go to contribution page
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Abdullrahman Maghrabi (King Abdulaziz City For Science and Technology)04/08/2015, 16:00Forbush decreases are one of the most important cosmic ray time variations observed by ground level monitors and on board space detectors. They mainly occur during the active phases of the solar cycle, and associated with geomagnetic storms caused by solar flares or coronal mass ejections. Experimental studies of Forbush decreases have shown distinct properties. These properties are important...Go to contribution page
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Huihai He (Institute of High Energy Physics, CAS)04/08/2015, 16:00
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Prof. Yoshida Kenji (Shibaura Institute of Technology)04/08/2015, 16:00Symmetric and triangle-shaped flux variability in X-ray and gamma-ray light curves has been observed in many blazars. A statistical study of X-ray and gamma-ray variability in blazars suggests that the rise time of flares are nearly equal to the decay time on the average. It is usually believed that the X-ray emission of many blazars arises as synchrotron emission of electrons accelerated at a...Go to contribution page
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Amanda Weinstein (Iowa State University)04/08/2015, 16:00The process of gathering and associating data from multiple sensors or sub-detectors due to a common physical event (the process of event-building) is used in many fields, including high-energy physics and gamma-ray astronomy. The problem of fault tolerance in event-building is a difficult one, and one that becomes increasingly difficult with higher data throughput rates and increasing numbers...Go to contribution page
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Dr Francesco Fenu (University of Torino - INFN Torino)04/08/2015, 16:00EUSO--Balloon successfully flew on August 2014 from Timmins (Ontario, Canada). Its focal surface was an array of 36 MAPMTs, 64 pixels each, for a total of 2304 channels. During its 5 hours flight at float altitude of about 40 km it routinely recorded sequences of 128 consecutive 2.5 $\mu$s long snapshots (GTUs) of the luminous conditions in its field of view ($\sim$ 64 $km^{2}$) with a...Go to contribution page
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Dr Thomas Mernik (Institute for Astronomy and Astrophysics, University of Tübingen)04/08/2015, 16:00The Extreme Universe Observatory onboard the Japanese Experiment Module (JEM-EUSO) is a mission being developed to observe ultra high energy cosmic rays (UHECRs) from space. JEM-EUSO consists of a wide field of view UV-telescope, assisted by an atmospheric monitoring system, designed to be mounted oboard the International Space Station. JEM-EUSO will observe the extensive air showers (EAS)...Go to contribution page
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Prof. Antonio Codino (University of Perugia and INFN)04/08/2015, 16:00Measurements of the energy spectra of 11 nuclear species by the TRACER experiment in the energy band $10^{11}$ - $5 \times 10^{14}$ $eV$ result in a constant, common spectral index of 2.67 $\pm$ 0.05. A similar figure has been reported by the CREAM experiment for Helium and Proton spectra in the same energy band. This index is equal within error bars with that of the all-particle spectrum...Go to contribution page
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Andrii Neronov (University of Geneva), Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00An Atmospheric Monitoring System (AMS) is a mandatory and key device of a space-based mission which aims to detect Ultra-High Energy Cosmic Rays (UHECR) and Extremely-High Energy Cosmic Rays (EHECR) from Space. JEM-EUSO has a dedicated atmospheric monitoring system that plays a fundamental role in our understanding of the atmospheric conditions in the Field of View (FoV) of the space...Go to contribution page
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Dr James Adams (Univ. of Alabama in Huntsville)04/08/2015, 16:00The Extreme Universe Space Observatory (EUSO) Balloon was launched from Timmins, Ontario, Canada on the moonless night of August 24, 2014. Before the balloon reached altitude, a helicopter carrying UV flashers and a UV laser took off from Timmins and flew to the balloon. For the next 2.5 hours the helicopter circled under the balloon operating the UV flashers and a UV laser to simulate the...Go to contribution page
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Francisco Salesa Greus (The Pennsylvania State University)04/08/2015, 16:00The HAWC collaboration has recently completed the construction of a gamma-ray observatory at an altitude of 4100 meters on the slope of the Sierra Negra volcano in the state of Puebla, Mexico. In order to achieve an optimal angular resolution, energy reconstruction, and cosmic-ray background suppression for the air showers observed by HAWC, it is crucial to obtain good timing and charge...Go to contribution page
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Mr Johannes Marquardt (CAU-Kiel, Germany)04/08/2015, 16:00Helios 1 and 2 were launched in December 1974 and January 1976, respectively. They both explored the inner heliosphere to distances of less than 0.3 AU from the Sun. The University of Kiel experiment on board the solar probe Helios measured high energy charged cosmic ray particles of solar, planetary and galactic origin. The cosmic ray telescope consists out of five semiconductor detectors,...Go to contribution page
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Dr Giuseppe Osteria (Istituto Nazionale di Fisica Nucleare - Sezione di Napoli, Italy), Dr Valentina Scotti (Istituto Nazionale di Fisica Nucleare - Sezione di Napoli, Italy)04/08/2015, 16:00The EUSO-Balloon experiment is a pathfinder mission for JEM-EUSO which has as its main objective an end-to-end test of all the key technologies and instrumentation of JEM-EUSO detectors. The instrument is a telescope of smaller dimension with respect to the one designed for the ISS, it is mounted in an unpressurized gondola of a stratospheric balloon. It was launched during the CNES flight...Go to contribution page
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Antonio Codino (University of Perugia and INFN)04/08/2015, 16:00The cosmic-ray abundances are compared to those of the quiescent matter referred to as galactic or solar abundances. Cosmic-ray and Galactic abundances are normalized to Iron. The comparison takes advantage of the recent data of the energy spectra of the cosmic nuclei in the interval $3 \times 10^{10}$ - $ 5 \times 10^{14}$ $eV$ and the observation of a constant spectral index of 2.67...Go to contribution page
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99. The effects of particle drifts on the modulation of galactic electrons in the global heliosphereRendani Nndanganeni (North-West University (Potchefstroom campus) South Africa)04/08/2015, 16:00The fundamental process of global curvature, gradient and current sheet drifts in the heliosphere is still not fully understood, especially how solar wind and magnetic field turbulence could affect the magnitude of drifts on a global scale. General consensus is that the so-called weak scattering drifts is giving too large modulation effects as follows from the application of numerical drift...Go to contribution page
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Prof. Rossella Caruso (Department of Physics and Astronomy - University of Catania and INFN Section of Catania)04/08/2015, 16:00JEM-EUSO is a space mission devoted to the investigation of Ultra-High Energy Cosmic Rays and Neutrinos (E>5x10^19 eV), using the atmosphere as a giant detector, which is also the source of the largest fraction of noise (nightsky background). The EUSO@TurLab project is an on-going activity aiming to reproduce atmospheric and luminous conditions that JEM-EUSO will encounter on its orbits around...Go to contribution page
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Dr Thomas Mernik (Institute for Astronomy and Astrophysics, University of Tübingen)04/08/2015, 16:00JEM-EUSO (The Extreme Universe Observatory onboard the Jap\-a\-nese Experiment Module) is a space borne UV-telescope which will be mounted on the ISS (International Space Station). It is designed for the observation of UHECR induced extensive air showers (EAS) above an energy of $10^{19}$ eV by using the earth's atmosphere as a large detector. Due to the amount of monitored target volume it...Go to contribution page
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Axel Donath (Max Planck Institute for Nuclear Physics, Heidelberg), Christoph Deil (MPI for Nuclear Physics, Heidelberg)04/08/2015, 16:00We will present a high-resolution image of the H.E.S.S. Galactic plane survey with interesting sources and features highlighted. This poster is complementary to the talk "The H.E.S.S. Galactic plane survey". Come talk to us about sources of interest to you or any questions you might have how to properly use the HESS survey significance, flux and upper limit maps and source catalog in FITS...Go to contribution page
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Dr Robert Parsons (Max Planck Institute for Nuclear Physics)04/08/2015, 16:00Gamma-ray bursts (GRBs) are some of the most energetic and exotic events in the Universe, however their behaviour at the highest energies (>10 GeV) is largely unknown. Although the Fermi-LAT space telescope has detected several GRBs in this energy range, it is limited by the relatively small collection area of the instrument. The H.E.S.S. experiment has now entered its second phase by adding a...Go to contribution page
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Dr Francesco Fenu (University of Torino - INFN Torino)04/08/2015, 16:00JEM--EUSO is an international collaboration committed to the development of space based ultra high energy cosmic ray observatories. In this framework we are carrying out an extensive simulation study in order to evaluate the performances of the mission. In this contribution we focus on the energy and $X_{max}$ reconstruction performances. We therefore simulated several samples of cosmic...Go to contribution page
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Patrick Hunt (Colorado School of Mines)04/08/2015, 16:00We describe the design and fabrication of a prototype Global Light System (GLS) laser ground station for the JEM-EUSO project. The GLS will be a network of ground-based UV LEDs and steered lasers to monitor and calibrate the JEM-EUSO cosmic ray detector planned for the International Space Station. The GLS units will generate optical signatures in the atmosphere that are comparable to tracks...Go to contribution page
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Daniel Gottschall (Institut für Astronomie und Astrophysik Tübingen)04/08/2015, 16:00The High Energy Stereoscopic System (H.E.S.S.) experiment is one of the leading observatories for gamma-ray astronomy. It consists of four telescopes with a reflecting dish diameter of 12 m (CT1-4) and a newer large telescope (CT5) with a reflecting dish diameter of 28 m. On CT5 876 mirror facets are mounted, all of them equipped with a computerised system for their alignment. The design of...Go to contribution page
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Stefan Ferreira (North-West University)04/08/2015, 16:00Proton observations from the PAMELA mission and a comprehensive modulation model, including a new Stochastic Differential Equation (SDE) model, are used to study the details of the modulation of cosmic rays in the inner heliosphere. Recent theoretical advances in determining the diffusion coefficients are used to compute cosmic ray intensities over the unusual last solar minimum activity...Go to contribution page
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Robert Lauer (University of New Mexico)04/08/2015, 16:00Astrophysical sources are now observed by many different instruments at different wavelengths, from radio to high-energy gamma-rays, with an unprecedented quality. Putting all these data together to form a coherent view, however, is a very difficult task. Each instrument has its own data format, software and analysis procedure, which are difficult to combine. It is for example very challenging...Go to contribution page
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Antonio Codino (University of Perugia and INFN)04/08/2015, 16:00The measurements of the chemical composition of the cosmic radiation in the last years above the ankle energy have modified the foundation of Cosmic Ray Physics and have simple, compelling, unambiguous interpretation: (1) high energy cosmic rays in the band $3 \times 10^{18}$ - $3 \times 10^{20}$ $eV$ do not have an extragalactic origin; (2) the cosmic nuclei above the ankle are not...Go to contribution page
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Dr Lukas Nellen (I. DE CIENCIAS NUCLEARES, UNAM)04/08/2015, 16:00The framework of relativistic quantum-field theories requires Lorentz Invariance, which among other things implies a constant velocity of light. Many theories of quantum gravity, on the other hand, include violations of Lorentz Invariance at small scales and high energies. This generates a log of interest in establishing limits on such effects, and, if possible, observe them directly. Gamma...Go to contribution page
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Dr Marek Siluszyk (Siedlce University, Poland), Prof. Michael Alania (Siedlce University, Poland), Dr Renata Modzelewska (Siedlce University, Poland)04/08/2015, 16:00The hourly neutron monitor data have been used to study the role of drift effect in the temporal changes of the diurnal anisotropy. In order to thoroughly separate sectors of the Interplanetary Magnetic Field (IMF) and its influence on the anisotropy of Galactic Cosmic Rays (GCRs) for positive (A>0) and negative (A<0) polarities of solar magnetic cycle, two periods (1995-1997 (A>0) and...Go to contribution page
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Anna O'Faolain de Bhroithe (DESY)04/08/2015, 16:00In 1989, the Whipple 10m Telescope achieved the first indisputable detection of a TeV gamma-ray source, the Crab Nebula. Until its decommissioning in 2011, the Whipple Telescope took regular measurements of the nebula. With the recent discovery of GeV gamma-ray flaring activity in the Crab Nebula, it is an opportune time to return to the Whipple Telescope data set and search its extensive...Go to contribution page
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Dr Francesco Fenu (University of Torino - INFN Torino)04/08/2015, 16:00The EUSO--Balloon experiment is being developed as a pathfinder for the JEM--EUSO mission. In this framework we are developing a series of balloon flights, with a rescaled version of the JEM--EUSO detector, to be deployed at 40 km height. In view of a long duration flight, we estimate the feasibility of detecting real cosmic ray events. In this contribution we evaluate the energy and...Go to contribution page
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Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00The Spanish bi-spectral & waterproof Infrared Camera onboard the EUSO-BALLOON (CNES) flight on August 24, 2014 from Timmins (Canada) will be reviewed in this paper. This infrared camera is aimed to obtain the cloud coverage and the cloud top height in the whole Field of View (FoV). The Infrared Camera is a stand-alone device of 0.4m x 0.4m x 0.4m with two filters centered at 10.8 μm and 12 μm...Go to contribution page
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Mario Bertaina (Univ. & INFN Torino)04/08/2015, 16:00EUSO-Balloon is a first prototype of the spaced-based JEM-EUSO telescope. Built on a stratospheric balloon, the telescope flew for eight hours, the night of August 25, 2014, above Canada. Interactions of light with clouds might impact the signal received by JEM-EUSO & EUSO-Balloon from cosmic-ray events. Reliable informations on cloud properties, such as the cloud-top-height (CTH), are thus...Go to contribution page
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Elena Orlando (Stanford University), Dr Eugenio Bottacini (Stanford University)04/08/2015, 16:00All-sky exploration by Fermi-LAT has revolutionized our view of the gamma-ray Universe. While its ongoing all-sky survey counts thousands of sources, essential issues related to the nature of unassociated sources call for more sensitive all-sky surveys at hard X-ray energies that allow for their identification. This latter energy band encodes the hard-tail of the thermal emission and the...Go to contribution page
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Mitsue Den (National Institute of Information and Communications Technology)04/08/2015, 16:00Three-dimensional MHD simulation code, REPPU (REProduce Plasma Universe) code, is developed for modeling of space plasma phenomena, and is utilized for the solar surface and the global solar wind structure. The distinguishing features of this code is the 3-D grid system, which has no polar singularity though it is able to fit the spherical structure. This grid system makes it possible to set...Go to contribution page
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Dr Ralf Wischnewski (DESY)04/08/2015, 16:00Upcoming Gamma-Ray and Cosmic-Ray experiments require relative time calibration of all detector components with (sub-)nanosecond precision. White Rabbit, an established technology for time- and frequency transfer, can be applied here. We describe a White Rabbit (WR) based design for Tunka-HiSCORE - a timing array for Gamma-Ray astronomy now under construction. Sub-nsec synchronization...Go to contribution page
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Nicholas Eugene Engelbrecht (SANSA)04/08/2015, 16:00The stochastic approach to solving the Parker transport equation has relatively recently become a popular means of furthering the numerical study of cosmic ray modulation. This is in part due to the fact that this approach allows for three-dimensional, time-dependent simulations over a range of energies that could not be performed using earlier finite difference techniques. We present here...Go to contribution page
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Stefan Ferreira (North-West University)04/08/2015, 16:00The time-dependent modulation of galactic cosmic rays in the heliosphere is studied over different polarity cycles by computing 2.5 GV proton intensities using a two-dimensional, time-dependent modulation model. By incorporating recent theoretical advances in the relevant transport parameters in the model we showed in previous work that this approach gave realistic computed intensities over a...Go to contribution page
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Heike Prokoph (Linnaeus University)04/08/2015, 16:00VER J0521+211 (RGB J0521.8+211) is one of the brightest and most powerful blazars detected in the TeV gamma-ray regime. It is located at a redshift of z=0.108 and since its discovery in 2009, VER J0521+211 has exhibited an average TeV flux exceeding 0.1 times that of the Crab Nebula, corresponding to an isotropic luminosity of 3e44 erg s-1. We present data from a comprehensive multiwavelength...Go to contribution page
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Andreas Haungs (Karlsruhe Institute of Technology)04/08/2015, 16:00The steady development of semiconductor devices in the last years lead to highly improved photon detectors (called SiPM) and with that its applicability for astroparticle physics experiments. Here, we discuss particularly the application at cosmic ray air-shower fluorescence telescopes in space (JEM-EUSO telescope). For this, improvements of the newest generation of SiPM are needed concerning...Go to contribution page
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Epifanio Ponce (BUAP)04/08/2015, 16:00The near UV background level at the atmosphere has several sources, such as transient luminous events, trace of micro-meteorites and human activities by example. In order to evaluate the possibility to detect ultra high energy cosmic ray fluorescence signals from the space, it is necessary to measure and monitor this UV background level. Nature of the UV atmospheric transient events is not...Go to contribution page
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Robert Brose (DESY)04/08/2015, 16:00Supernova remnants are known as sources of galactic cosmic rays by their nonthermal emission of radio waves, X rays, and gamma rays. However, many theoretical models fail to reproduce the observed soft spectra and the spectral breaks. We model cosmic-ray acceleration in a time-dependent and self consistent way by simultaneously solving the CR transport equation and a transport equation...Go to contribution page
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Michael Alania (Siedlce University)04/08/2015, 16:00We show that the source of the energy dependence of the rigidity spectrum of the Forbush decrease (Fd) of the galactic cosmic ray (GCR) intensity are the structural changes in the interplanetary magnetic field (IMF) turbulence driven by the shock waves either directely creating near the Sun or shock waves related to the propagation of the CME in interplanetary space. We recognize that during...Go to contribution page
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Noemie Globus (Tel Aviv University)04/08/2015, 16:00Recent results from Auger suggest that there might be a significant heavy component in high energy cosmic rays. It is therefore interesting to explore the possibility to accelerate not only protons but also complex nuclei in relativistic jets. We developed a numerical tool inspired by the work done by Niemiec and Ostrowski (04) to compute the acceleration of particles at midly relativistic...Go to contribution page
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1098. Uncertainties on propagation parameters: impact on the interpretation of the positron fractionyoann genolini (LAPTh)04/08/2015, 16:00The positron fraction in cosmic rays has recently been measured with improved accuracy up to 500 GeV, and it was found to be a steadily increasing function of energy above $\sim$ 10 GeV. This behaviour contrasts with standard astrophysical mechanisms, in which positrons are secondary particles, produced in the interactions of primary cosmic rays during their propagation in the interstellar...Go to contribution page
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Mr Mathis Börner (TU Dortmund)04/08/2015, 16:00IceCube is a cubic kilometer neutrino telescope located at the geographic South Pole. Although primarily designed for the detection of cosmic neutrinos, the detector is well suited for measurements of the atmospheric muon neutrino energy spectrum. We present the first measurement of the atmospheric neutrino energy spectrum obtained in its full 86-string configuration. The analysis was carried...Go to contribution page
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Eleanna Asvestari (University of Oulu)04/08/2015, 16:00Here we present a new semi-empirical model describing modulation of galactic cosmic rays in the heliosphere. The model is an update of the previous similar model by Alanko-Huotari et al. (2006) and considers such heliospheric parameters as open solar magnetic flux, heliospheric current sheet tilt angle and the large scale solar magnetic field polarity. The model has been tested and calibrated...Go to contribution page
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Davide Rozza (Universita & INFN, Milano-Bicocca (IT))04/08/2015, 16:00The precise measurements of the electron, positron and electron plus positron spectra, in the energy range from 0.5 GeV up to 700 GeV, 500 GeV and 1 TeV respectively, were published by the AMS-02 collaboration. We focus the attention above 10 GeV where the solar modulation effects are negligible. The differences between these data and the “classical” Local Interstellar Spectra, obtained using...Go to contribution page
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Sara Tomita (Aoyama Gakuin University)04/08/2015, 16:00The Weibel instability is thought to be important for particle acceleration and generation of magnetic fields in relativistic shocks. However, the magnetic field produced by the Weibel instability cannot occupy large regions because of the rapid decay. Non-linear evolution of the Weibel instability has been investigated in uniform plasmas or shocks propagating into uniform plasmas so...Go to contribution page
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Cyril Trichard (LAPP)04/08/2015, 16:00The identification of gamma-rays against the dominant background of hadronic cosmic rays is very challenging for Imaging Air Shower Telescopes such as H.E.S.S. Xeff is a multivariate particle classification approach successfully applied to the H.E.S.S. data analysis enabling a significant gain in sensitivity. It is based on the combination of three shower reconstruction methods currently under...Go to contribution page
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Koichi Ichimura (University of Tokyo)04/08/2015, 16:00XMASS, the Kamioka Dark Matter direct detection experiment with an eye to future multi purpose detector, is planning to improve its Dark Matter sensitivity by increasing the amount of liquid xenon in its inner detector volume from the current 832kg to 5 metric tons. Challenges identified with the current detector informed the design of this upgrade. In this presentation, we present the new...Go to contribution page
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Prof. Ding Chen (National Astronomical Observatories, CAS), Prof. Jing Huang (Institute of High Energy Physics, CAS), Dr L.M. Zhai (Institute of High Energy Physics, CAS), Prof. M. Shibata (Yokohama National University, Yokohama 240-8501, Japan), Dr Y. Katayose (Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan)04/08/2015, 16:00A new air-shower core-detector array (YAC: Yangbajing Air-shower Core-detector array) has been developed to measure the primary cosmic-ray composition at the ``knee" energies in Tibet, China, focusing mainly on the light components. The prototype experiment (YAC-I) consisting of 16 detectors has been constructed and operated at Yangbajing (4300 m a.s.l.) in Tibet since May 2009. YAC-I has been...Go to contribution page
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Oleg Ruchayskiy (EPFL)04/08/2015, 17:00
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Clancy James (University of Erlangen-Nuernberg)04/08/2015, 17:30The ANTARES experiment has been running in its final configuration since 2008. It is the largest neutrino telescope in the Northern hemisphere. After the discovery of a cosmic neutrino diffuse flux by the IceCube detector, the search for its origin has become a key mission in high-energy astrophysics. Particularly interesting is the indication (although not significant with the present IceCube...Go to contribution page
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Charles Jui (University of Utah)04/08/2015, 18:00The Telescope Array (TA) is the largest experiment in the northern hemisphere actively observing ultrahigh energy cosmic rays. TA is a hybrid detector system combining the precision of the air fluorescence technique with the efficiency of a surface scintillator array. Three fluorescence stations each view 108 degrees in azimuth and up to 30 degrees in elevation. They are located at the...Go to contribution page
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Pasquale Serpico (Unite Reseaux du CNRS (FR))05/08/2015, 09:00Direct techniques for cosmic ray observations have reached an unprecedented level of precision, unveiling fine-details of the energy spectra. I will introduce the evidence for new spectral features which has been accumulated by new experiments over the past few years, and review the main ideas invoked in the theoretical explanations of the revealed spectral breaks and elemental spectra...Go to contribution page
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Alexei Smirnov (ICTP)05/08/2015, 09:45All what we know about neutrinos with high confidence fits well the three-neutrino paradigm: 3 massive and mixed neutrinos with interactions described by the Standard Model. The paradigm is challenged by possible existence of new neutrino species - sterile neutrinos and new (``non-standard'') interactions. The outstanding unknowns include the type of neutrino mass ordering (hierarchy) and...Go to contribution page
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Prof. Reinhard Schlickeiser (Ruhr University Bochum)05/08/2015, 11:00The analytical theory of diffusive cosmic ray acceleration at parallel shock waves is generalized to arbitrary shock speeds $V_s=\beta _1c$, including in particular relativistic speeds. This is achieved by applying the diffusion approximation to the relevant Fokker-Planck particle transport equation formulated in the mixed comoving coordinate system. In this coordinate system the particle's...Go to contribution page
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Jonathan Biteau (UC Santa Cruz)05/08/2015, 11:00Gamma rays from TeV blazars have been detected by ground-based experiments for more than two decades. We have collected the most extensive set of archival spectra from these sources in order to constrain the processes affecting gamma-ray propagation on cosmological distances. We discuss our results on the diffuse photon field that populates universe, called the extragalactic background light,...Go to contribution page
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Prof. Anatoly Erlykin (P.N.Lebedev Physical Institute, Moscow, Russia)05/08/2015, 11:00The attribution of part of ‘global warming’ to changes in the total solar irradiance (TSI) is an important topic which is not, yet, fully understood. Here, we examine the TSI induced temperature (T) changes on a variety of time scales, from one day to centuries and beyond, using a variety of assumptions. Also considered is the latitude variation of the T-TSI correlations, where it appears...Go to contribution page
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Dr Tobias Jogler (SLAC/ECAP)05/08/2015, 11:00SNR are commonly assumed to accelerate the cosmic rays of E < 1 PeV observed at Earth. SNRs that interact with molecular clouds (MCs) are very promising targets to distinguish between leptonic and hadronic-induced gamma-ray emission. One of the brightest Fermi/LAT-detected SNRs interacting with a MC is W51C. Here we present a very detailed analysis of 5 years of Fermi/LAT data revealing a...Go to contribution page
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Ralph Richard Engel (KIT - Karlsruhe Institute of Technology (DE))05/08/2015, 11:00The data collected with the Pierre Auger Observatory have led to a number of surprising discoveries. While a strong suppression of the particle flux at the highest energies has been established unambiguously, the dominant physics processes related to this suppression cannot yet be identified. Within the energy range covered by fluorescence detector observations with sufficient statistics, an...Go to contribution page
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Cedric Schreiner (North-West University)05/08/2015, 11:15The transport of charged particles in the heliosphere and the interstellar medium is governed by the interaction of particles and magnetic irregularities. For the transport of protons a rather simple model using a linear Alfven wave spectrum which follows the Kolmogorov distribution usualy yields good results. Even magnetostatic spectra may be used. For the case of electron transport,...Go to contribution page
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Cyril Trichard (LAPP)05/08/2015, 11:15W51C is a supernova remant (SNR) known to be interacting with a molecular cloud (MC). Gamma-rays from hundreds of MeV up to tens of TeV were discovered towards this region. However a probable contamination from a pulsar wind nebula (PWN) prevents from directly investigating cosmic ray acceleration at the SNR shock. For the first time, thanks to new data analysis methods, H.E.S.S. reveals the...Go to contribution page
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Priyadarshini Bangale (Max planck Institute for physics)05/08/2015, 11:151ES 1011+496 is a blazar located at a redshift z=0.212, revealed as a very-high-energy gamma-ray emitter by MAGIC in 2007. In February 2014 the source underwent an unprecedented flaring episode. Following a flare alert issued by VERITAS, the MAGIC telescopes carried out an observation campaign for a total of 17 nights between February 6 and March 7, during which the source reached a peak flux...Go to contribution page
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Martin Pohl (DESY)05/08/2015, 11:15For parameters that are applicable to the conditions at young supernova remnants, we present results of 2D3V particle-in-cell simulations of a non-relativistic plasma shock with a large-scale perpendicular magnetic field. We developed a new clean setup that uses the collision of two plasma slabs with different density and velocity, leading to the development of two distinctive shocks and a...Go to contribution page
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Dr Hiroyuki Sagawa (Institute for Cosmic Ray Research, University of Tokyo)05/08/2015, 11:15The Telescope Array (TA), located in Utah, USA, observes highest energy cosmic rays using Surface Detectors (SDs) and Fluorescence Detectors (FDs). The SD array consists of 507 scintillation detectors on a 1.2-km square grid covering 700 km^2. The FD sets located at three sites look over the surface array. Using the first 6-year data collected by the surface detectors, we found a cluster of...Go to contribution page
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David Seckel (University of Delaware)05/08/2015, 11:30IceTop is the 1 km^2 surface array of the IceCube Neutrino Observatory. Measurements of ground level particles by IceTop have been used for high precision measurements of the cosmic ray spectrum for energies of 3-300 PeV. Composition has been studied by considering coincident measurements of TeV muon bundles in the 2 km deep IceCube neutrino detector. Including IceTop data for GeV muons may...Go to contribution page
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Leonid Ksenofontov05/08/2015, 11:30We study production of secondary cosmic rays (CR) in supernova remnants (SNR). The model includes reacceleration of already existing in interstellar medium secondary CR particles as well as creation of secondary CRs in nuclear collisions of accelerated protons with gas nuclei and their subsequent acceleration by SNR shock. It is shown that production secondary CRs in SNRs produces...Go to contribution page
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Dr Yulia Kartavykh (Julius-Maximilians Universität Würzburg, Würzburg, Germany)05/08/2015, 11:30We use numerical solutions of the focused transport equation to study the evolution of the pitch-angle dependent distribution function of protons in the vicinity of parallel and oblique shock waves and compare the results with predictions of diffusive shock acceleration theory. We then consider the case that a seed population of protons is injected close to the Sun simultaneously with a...Go to contribution page
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nahee park (University of Chicago)05/08/2015, 11:30Gamma-ray emission from supernova remnants (SNRs) can provide a unique window to observe the cosmic-ray acceleration believed to take place in these objects. Tycho is an especially good target for investigating hadronic cosmic-ray acceleration and interactions because it is a young type Ia SNR that is well studied in other wavelengths, and it is located in a relatively clean environment....Go to contribution page
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Matthias Lorentz (IRFU CEA Saclay)05/08/2015, 11:30When very high-energy photons (VHE, E>100 GeV) travel over cosmological distances, they interact with background light by pair production. In the Earth reference frame it turns out the threshold of the reaction with photons from IR to UV falls in the energy range where the H.E.S.S. array of Cherenkov telescopes is the most sensitive. Observations of spectral features in the VHE band of...Go to contribution page
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Angela V Olinto (The University of Chicago)05/08/2015, 11:45The Extreme Universe Space Observatory (EUSO) to be accommodated in the Japanese Experiment Module (JEM) of the International Space Station (ISS), JEM-EUSO, is designed to discover the origin of ultrahigh energy cosmic rays by observing extremely energetic extensive airshowers from space. The JEM-EUSO design is based on a wide field of view (60$^o$) refractor with an ultrafast 0.3 M...Go to contribution page
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Alex Ivascenko (North-West University)05/08/2015, 11:45The transport of charged particles in turbulent magnetic fields is a topic of great interest in astrophysics, since our ability to successfully use cosmic rays as astronomic messengers depends on our understanding of the transport processes. One of the primary effects is the scattering of particles on magnetic irregularities leading in the first instance to a change in the pitch-angle...Go to contribution page
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Mr Jiro Shimoda (Department of Physics and Mathematics, Aoyama-Gakuin University, Sagamihara, Kanagawa 252-5258, Japan)05/08/2015, 11:45Using three-dimensional (3D) magnetohydrodynamics (MHD) simulations, we show that the efficiency of cosmic-ray (CR) production at supernova remnants (SNRs) is over-predicted if it could be estimated based on proper motion measurements of H$\alpha$ filaments in combination with shock-jump conditions. The CR production efficiency at the SNR has been widely discussed, which seems to be...Go to contribution page
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Alexis Popkow (UCLA)05/08/2015, 11:45The Cygnus region is a very active region of our Galaxy, with many sources of GeV and TeV gamma-ray emission, such as supernova remnants, pulsar wind nebulae, high mass X-ray binaries and massive star clusters. A detailed study of the Cygnus region can give insight into the processes of particle acceleration in astrophysical sources. VERITAS is an array of four 12 meter diameter imaging...Go to contribution page
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Elisa Kay Pueschel (University College Dublin)05/08/2015, 11:45A non-zero intergalactic magnetic field (IGMF) would potentially produce detectable effects on cascade emission from blazars. Depending on the strength of the IGMF, the cascade emission may be time delayed or angularly broadened compared to the blazar’s primary, unscattered emission. Ground-based imaging atmospheric-Cherenkov telescopes, such as VERITAS, have the precise angular resolution...Go to contribution page
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Ms Marta D'Angelo (GSSI-INFN)05/08/2015, 12:00We solve the Vlasov equation describing the escape of cosmic rays (CRs) from a point source, in the case when the Larmor radius is smaller than the coherence scale of the cosmological magnetic field in which CRs are propagating, right after leaving the source. The electric current that follows from this calculation is used to calculate the growth rate of a non-resonant instability. We study...Go to contribution page
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Dr Alexandr Afanasiev (University of Turku, Finland)05/08/2015, 12:00Self–consistent Monte Carlo simulations have been a fruitful approach to model particle acceleration dynamically coupled with the foreshock development in quasi-parallel shocks. Our group has developed the global Coronal Shock Acceleration (CSA) Monte Carlo simulation capable of modeling self-consistent shock acceleration from the inner corona to the solar wind. However, in the currently used...Go to contribution page
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Dr Robert Lauer (University of New Mexico)05/08/2015, 12:00The recently completed High Altitude Water Cherenkov (HAWC) gamma-ray observatory has been taking data in a partial configuration with >95% duty cycle for more than one year. With an instantaneous field of view of 2 sr, two-thirds of the sky is surveyed every day at gamma-ray energies between 100 GeV and 100 TeV. Any source location in the field of view can be monitored each day, with an...Go to contribution page
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Francois Brun (CEA Saclay)05/08/2015, 12:00The supernova remnant (SNR) W49B is a mixed-morphology remnant interacting with molecular clouds (MC) which originated in a Type Ib/Ic supernova explosion that occurred between one to four thousand years ago. It has one of the highest radio surface brightnesses, and is one of the brightest X-ray SNRs of our Galaxy. Gamma-ray observations of SNR/MC are a powerful tool to constrain the origin of...Go to contribution page
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Prof. Andrea Santangelo (University of Tuebingen)05/08/2015, 12:00JEM-EUSO, on board the International Space Station, is a mission that aims at unveiling the nature and the origin of the ultra high energy cosmic rays (UHECRs), and to address basic problems of fundamental physics at extreme energies. The instrument is designed to measure the arrival direction, the energy and, possibly, the nature of these particles. It consists of a wide-field of view...Go to contribution page
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Daniela Dorner05/08/2015, 12:15Active galactic nuclei show variability on time scales ranging from minutes to decades. The radiation from these extreme objects spans many orders of magnitude along the whole electromagnetic spectrum. It shows two peaks, where for the subgroup of blazars the first peak is in the radio to x-ray regime, while the second peak is in the gamma-ray regime. Due to the extreme variability and the...Go to contribution page
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Toshihiro FUJII (University of Chicago, University of Tokyo)05/08/2015, 12:15We present a concept for large area, low-cost detection of ultra-high energy cosmic rays (UHECRs) with a Fluorescence detector Array of Single-pixel Telescopes (FAST), addressing the requirements for the next generation of UHECR experiments. In the FAST design, a large field of view is covered by a few pixels at the focal plane of a mirror or Fresnel lens. We report first results of a FAST...Go to contribution page
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Urs Ganse (University of Helsinki)05/08/2015, 12:15Heliospheric shocks are well-known accelerators of particles, responsible for the creation of gradual solar energetic particle events. While the fact that particle beams are formed in shock interactions is firmly established, many open questions remain in regard to the microphysics of the acceleration process and the shape of the resulting beam distribution. The standard analytic...Go to contribution page
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Dr Joachim Hahn (MPIK)05/08/2015, 12:15Supernova remnants (SNRs) are considered prime candidates for the acceleration of Galactic cosmic-rays up to the knee of the cosmic-ray spectrum. More than 300 SNRs have been discovered in radio and higher frequency observations, of which $\sim 250$ fall into the H.E.S.S. Galactic Plane Survey region. Approximately 50 of these objects are spatially coincident with very-high-energy (VHE; E>0.1...Go to contribution page
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Dr Gwenael Giacinti (University of Oxford, Clarendon Laboratory)05/08/2015, 12:15We investigate the beginning of cosmic ray (CR) acceleration at supernovae, from the first day to the first few decades following the explosion. We show that supernovae occuring in dense winds should accelerate CR protons to energies E > PeV. We present a detailed study of the maximum CR energy, magnetic field amplification at the shock, and compute fluxes of secondary gamma-rays and...Go to contribution page
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Renier Burger (North-West University)05/08/2015, 14:00Very often cosmic-ray modulation studies entail adjusting ad hoc parameters in order to fit observed cosmic-ray intensities. Since typically not all of the parameters in such models are related to observable physical quantities like magnetic field variances and correlation scales, they cannot predict changes in cosmic-ray intensity caused by changes in turbulence quantities. In this ab initio...Go to contribution page
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Pasquale Blasi (INAF)05/08/2015, 14:00Ultra-high energy cosmic rays observed at the Earth are most likely accelerated in extra-galactic sources. For typical source luminosities invoked for such sources, we show that the electric current associated with cosmic rays escaping their sources is large enough to induce plasma instabilities that create magnetic fluctuations able to confine particles close to their sources for energies...Go to contribution page
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William Jones (NASA)05/08/2015, 14:00The NASA Particle Astrophysics Program covers the Origin of the Elements, Nearest Sources of Cosmic Rays, How Cosmic Particle Accelerators Work, The Nature of Dark Matter, and Ultrahigh Energy Neutrinos. Progress in each of these topics has come from sophisticated instrumentation flown on Long Duration Balloon (LDB) flights around Antarctica for more than two decades. Super Pressure Balloons...Go to contribution page
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Prof. Makoto Sasaki (Institute for Cosmic Ray Research)05/08/2015, 14:00Ashra is a project to build an unconventional optical telescope complex that images a very wide field of view (FOV), covering 77% of the sky, yet with the angle resolution of a few arcmin, with the use of image intensifier and CMOS technology. The project primarily aims to observe Cherenkov and fluorescence light from air-shower developments. It can also be used to monitor optical transients...Go to contribution page
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Dr Takeshi NAKAMORI (Yamagata University)05/08/2015, 14:00We perform simulations of Cherenkov Telescope Array (CTA) observations of a young supernova remnant RX J1713.7−3946. This target is not only one of the brightest sources ever discovered in very high-energy (VHE) gamma-rays but also well observed in other wavebands. In X-rays, the emission is dominated by synchrotron radiation, which links directly to the existence of high-energy...Go to contribution page
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denise boncioli (INFN - LNGS)05/08/2015, 14:15In the last years a general consensus has emerged that ultra-high energy cosmic ray (UHECR) data can serve as a powerful probe of the validity of special relativity. This applies in particular to the propagation of cosmic rays from their sources to Earth through diffuse extragalactic background radiation, which is responsible for energy suppressions due to pion photoproduction by UHE...Go to contribution page
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Roger Wendell (The University of Tokyo)05/08/2015, 14:15Spanning several orders of magnitude in both neutrino energy and path length, atmospheric neutrinos are a versatile probe of both standard and exotic mixing scenarios. Indeed, recent measurements of $\theta_{13}$ by reactor antineutrino experiments have opened up the possibility to observe the effect of the earth's matter on neutrino oscillations and to subsequently determine the neutrino...Go to contribution page
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David Ruffolo (Mahidol University)05/08/2015, 14:15The Galactic cosmic ray spectrum exhibits subtle variations over the 22 yr solar magnetic cycle in addition to the more dramatic variations over the 11 yr sunspot cycle. Neutron monitors are large ground-based detectors that provide accurate measurements of variations in the cosmic ray flux at the top of the atmosphere above the detector. At any given location the magnetic field of the...Go to contribution page
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Dr John W. Mitchell (NASA Goddard Space Flight Center)05/08/2015, 14:15The Heavy Nuclei eXplorer (HNX) is a new instrument proposed as a NASA Small Explorer by NASA Goddard Space Flight Center, University of California, Berkeley, Washington University in St. Louis, and the Jet Propulsion Laboratory. HNX will investigate the nature of the reservoirs of nuclei at the cosmic-ray sources, the mechanisms by which nuclei are removed from the reservoirs and injected...Go to contribution page
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Luigi Tibaldo (SLAC)05/08/2015, 14:15Cosmic rays up to at least PeV energies are usually described in the framework of an elementary scenario that involves acceleration by objects that are located in the disk of the Milky Way, such as supernova remnants or massive star-forming regions, and then diffusive propagation throughout the Galaxy. Details of the propagation process are so far inferred mainly from the composition of cosmic...Go to contribution page
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Prof. Karel Kudela (Institute of Experimental Physics, Slovak Academy of Sciences), Dr PARTHA CHOWDHURY (Kyung Hee University), Prof. Y.-J Moon (Kyung Hee University)05/08/2015, 14:30Galactic cosmic rays (GCRs) encounter an outward-moving solar wind with cyclic magnetic-field fluctuation and turbulence. This causes convection and diffusion in the heliosphere. The GCR counts from the ground-based neutron monitor stations show intensity changes that are anti-correlated with the sunspot numbers with a lag of a few months. In this paper, we make a detailed correlative study...Go to contribution page
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Iris Gebauer05/08/2015, 14:30The positron fluxes measured by PAMELA and most recently AMS-02, show an excess far above the expectations of secondary positron production in the ISM. These locally observed energetic positrons require a near-by source of even more energetic positrons. Among the possible explanations for a primary source of such positrons, unaccounted astrophysical point sources or dark matter (DM)...Go to contribution page
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Prof. Scott Wakely (University of Chicago)05/08/2015, 14:30Recent high-profile ‘anomalies’ detected in the cosmic-ray flux have underscored the importance of improving our understanding of cosmic-ray source and propagation processes. To this end, one of the key observational tasks is obtaining measurements of the relative abundances of the light cosmic-ray isotopes at relativistic energies (above ~1 GeV/n) where existing information is extremely...Go to contribution page
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Yuuki Nakano (Kamioka Observatory)05/08/2015, 14:30Super-Kamiokande (SK), a 50 kton water Cherenkov detector in Japan, observes $^{8}$B solar neutrinos with neutrino-electron elastic scattering. SK searches for distortions of the solar neutrino energy spectrum caused by the edge of the MSW resonance in the core of the sun. It also searches for a day/night solar neutrino flux asymmetry induced by the matter in the Earth. The installation...Go to contribution page
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Francesco de Palma (INFN)05/08/2015, 14:30Galactic cosmic ray (CRs) sources, classically proposed to be Supernova Remnants (SNRs), must meet the energetic particle content required by direct measurements of high energy CRs. Indirect gamma-ray measurements of SNRs with the Fermi Large Area Telescope (LAT) have now shown directly that at least three SNRs accelerate protons. With the first Fermi LAT SNR Catalog, we have systematically...Go to contribution page
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Elena Orlando (Stanford University)05/08/2015, 14:45Cosmic rays (CR) interact with the interstellar medium and the magnetic field in the Milky Way, producing diffuse emission from radio to gamma rays. Observations of this diffuse emission and comparison with detailed predictions are powerful tools to unveil the CR distribution and to study CR propagation. We present various GALPROP CR propagation scenarios based on current CR measurements. The...Go to contribution page
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Mikhail Krainev (Lebedev Physical Institute, Moscow, Russia)05/08/2015, 14:45There is a long-lasting controversy on the main causes of the long-term (11-year and 22-year) variations in the intensity and anisotropy of the galactic cosmic rays (GCR) observed for more than 50 years in the inner heliosphere. Some people believe that the 11-year variation is due entirely to the toroidal branch of solar activity (the area and number of sunspots, the strength of the...Go to contribution page
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Nicolas Renault-Tinacci (Institut d'Astrophysique de Paris)05/08/2015, 14:45Millisecond pulsars (MSPs) are a growing class of gamma-ray emitters. Spectral analyses of their pulsed emission bring important constraints to the theoretical models which describe the electromagnetic processes responsible for high-energy radiations in pulsar magnetospheres. The gamma-ray data collected during five years of Fermi Large Area Telescope (LAT) observations have allowed in-depth...Go to contribution page
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Roberta Sparvoli (University of Rome Tor Vergata)05/08/2015, 14:45The CSES space mission will study the temporal stability of the inner Van Allen radiation belts, investigating precipitation of trapped particles induced by magnetospheric, ionosferic and tropospheric EM emissions, as well as by seimo-electromagnetic and anthropogenic disturbances. CSES satellite will be launched in September 2016 and inserted into a circular Sun-syncronous orbit with 98...Go to contribution page
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Alexis Coleiro (Université Paris Diderot)05/08/2015, 14:45The Galactic center hosts several types of high energy sources that are potential transient neutrino emitters. A time dependent analysis based on the ANTARES data is carried out with the aim of detecting high energy neutrinos temporally connected with bursts in the electromagnetic spectrum of objects located close to the Galactic center. This approach, more sensitive than a time-integrated...Go to contribution page
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Nicholas Eugene Engelbrecht (SANSA)05/08/2015, 15:00Galactic cosmic-ray (CR) intensities calculated using numerical modulation models that proceed from first principles, where the diffusion tensor is calculated using as inputs observationally motivated forms for the heliospheric turbulence power spectrum as function of turbulence quantities yielded by turbulence transport models, are incredibly sensitive to assumptions made as to the...Go to contribution page
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Anna Obertacke (Uni Wuppertal)05/08/2015, 15:00
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Dario Gasparrini (ASDC/ INFN Perugia)05/08/2015, 15:00The third catalog of active galactic nuclei (AGNs) detected by the Fermi Large Area Telescope (3LAC) is presented. It is based on the third catalog (3FGL, Acero et al. 2015, arxiv 1501.02003) of sources detected with a test statistic greater than 25, using the first 4 years of data. The 3LAC includes 1591 AGNs located at high (|b|>10°) Galactic latitudes (with 28 duplicate associations,...Go to contribution page
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Shoji Torii (Waseda University (JP))05/08/2015, 15:00The CALorimetric Electron Telescope (CALET) space experiment, which has been developed by Japan in collaboration with Italy and the United States, is a high-energy astroparticle physics mission to be installed on the International Space Station (ISS). The primary goals of the CALET mission include investigating possible nearby sources of high energy electrons, studying the details of galactic...Go to contribution page
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Christo Venter (North-West University, Potchefstroom Campus)05/08/2015, 15:00Pair cascades from MSPs may be a primary source of Galactic electrons and positrons that contribute to the increase in positron flux above 10 GeV as observed by PAMELA and AMS-02. The Fermi Large Area Telescope has increased the number of detected gamma-ray millisecond pulsars (MSPs) tremendously. Light curve modelling furthermore favours abundant pair production in MSP magnetospheres, so that...Go to contribution page
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Dr Giovanni Morlino (Gran Sasso Science Institute)05/08/2015, 15:15Cosmic rays (CR) are a fundamental source of ionization for molecular clouds as well as diffuse clouds, influencing their chemical, thermal, and dynamical evolution. The amount of CR inside a cloud also determines the γ-ray flux produced by hadronic collisions between CR and cloud materials. We study the spectrum of CR inside and outside a diffuse cloud for energies > MeV. We solve the...Go to contribution page
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Chi Cheung (Naval Research Laboratory)05/08/2015, 15:15Novae are now firmly established as a high-energy (>100 MeV) gamma-ray source class by the Fermi Large Area Telescope (LAT). In symbiotic systems such as V407 Cyg 2010, there is a firm theoretical framework for the production of shock-acceleration particles in the nova ejecta from interactions with the dense wind of the red giant companion. Yet, the >100 MeV emission detected in classical...Go to contribution page
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Euan Richard (Tokyo University)05/08/2015, 15:15Measurements of the atmospheric neutrino flux have been performed using Super-Kamiokande, a 22.5 kton fiducial-volume water-Cherenkov detector located in the Mozumi mine in Japan. Beginning operation in 1996, the detector has the world's highest statistics for observation of neutrinos originating from cosmic ray interactions in the atmosphere, which may be compared to the predictions...Go to contribution page
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Dr Donald Ngobeni (Vaal University of Technology)05/08/2015, 15:15It is well known that particle drift motions are suppressed by diffusive scattering as established by direct numerical simulations. The effect of constant scattering on the drift velocities of charged particles has always been included in numerical modulation models provided that the weak scattering drift velocity is scaled down in magnitude, although in an empirical manner as comparisons...Go to contribution page
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Prof. Mikhail Panasyuk (SINP MSU)05/08/2015, 15:15Modified KLYPVE is a novel fluorescence detector of ultra high energy cosmic rays (UHECRs, energies >50 EeV) to be installed on the Russian Segment of the International Space Station. The main goal of the experiment is to register arrival directions and energies of EECRs but it will be able to register other transient events in the atmosphere as well. The main component of KLYPVE is a...Go to contribution page
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Thibaut Desgardin (LUPM)05/08/2015, 15:30The Large Area Telescope (LAT) collaboration has recently completed the development of the "Pass 8" event-level analysis that provides a comprehensive revision of the algorithms used for event reconstruction and particle identification. Among other performance improvements, Pass 8 provides a drastic increase in the effective area of the LAT instrument below 100 MeV. Together with a better...Go to contribution page
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Stefano Della Torre (Universita & INFN, Milano-Bicocca (IT))05/08/2015, 15:30The cosmic rays modulation inside the heliosphere, is well described by a transport equation introduced by Parker in 1965. To solve this equation several approaches were followed in the past. Recently the Monte Carlo approach become widely used in force of his advantages with respect to other numerical methods. In the Monte Carlo approach the transport equation is associated to a fully...Go to contribution page
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Julian Krause05/08/2015, 15:30Molecular clouds act as targets for cosmic ray interactions, such as gamma ray emission via proton proton interactions. We study the effect of ionization by cosmic ray electrons and protons. Complimentary to gamma ray emission, the ionization rate allows to estimate the cr flux. In particular the ionization rate allows access to proton energies below the pion production threshold (~ 270 MeV)....Go to contribution page
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Peter von Ballmoos (IRAP)05/08/2015, 15:30on behalf of the JEM-EUSO collaboration EUSO-BALLOON is a pathfinder for JEM-EUSO, the Extreme Universe Space Observatory which is to be hosted on-board the International Space Station. As JEM-EUSO is designed to observe Ultra-High Energy Cosmic Rays (UHECR)-induced Extensive Air Showers (EAS) by detecting their ultraviolet light tracks "from above", EUSO-BALLOON is a nadir-pointing UV...Go to contribution page
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Damien DORNIC (CPPM)05/08/2015, 15:30ANTARES is currently the largest neutrino telescope operating in the Northern Hemisphere, aiming at the detection of high-energy neutrinos from astrophysical sources. By design, neutrino telescopes constantly monitor at least one complete hemisphere of the sky and are thus well set to detect neutrinos produced in transient astrophysical sources. The flux of high-energy neutrinos from...Go to contribution page
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Prof. Eun Suk Seo (University of Maryland (US))05/08/2015, 15:45The balloon-borne Cosmic Ray Energetics And Mass (CREAM) experiment was flown for ~161 days in six flights over Antarctica. Elemental spectra were measured for Z = 1 - 26 nuclei over a wide energy range from ~ $10^{10}$ to >$10^{14}$ eV at an average altitude of ~38.5 km with ~3.9 g/$cm^2$ atmospheric overburden. Building on the success of the balloon flights, the payload has been...Go to contribution page
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Dr Sara Buson (University of Padova)05/08/2015, 15:45The double-image gravitationally lensed blazar B0218+357 displayed several intervals of enhanced activity at gamma-rays. Fermi LAT observations focussed on the 2012 flaring interval led to the measurement at >100 MeV energies of a delay between the two lensed images of 11.46 ± 0.16 days. The delay is about 1 day longer than previously measured at radio wavelengths. Renewed flaring activity has...Go to contribution page
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Martina Cardillo (INAF - Osservatorio astrofisico di Arcetri)05/08/2015, 15:45While from the energetic point of view supernova remnants are viable sources of Galactic cosmic rays (CRs), the issue of whether they can accelerate protons up to a few PeV remains unsolved. Here we discuss particle acceleration at the forward shock of supernovae, and discuss the possibility that the current of escaping particles may excite a non-resonant instability that in turn leads to the...Go to contribution page
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Marius Wallraff (RWTH Aachen University)05/08/2015, 15:45The IceCube Neutrino Observatory is a 1 km$^3$ Cherenkov detector located at the geographic South Pole. It records several tens of thousands of identified atmospheric muon neutrino events per year and has proven to be suitable for the measurement of muon neutrino disappearance due to oscillations. Using similar methods, IceCube allows the search for additional sterile neutrino states with mass...Go to contribution page
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Fusa Miyake (Nagoya University)05/08/2015, 15:45$^{14}$C content in tree rings and $^{10}$Be concentration records in ice core provide information about past cosmic ray intensities. Some studies reported a large annual increase in the $^{14}$C content from AD 774 to 775. Also quasi-decadal $^{10}$Be data in the Dome Fuji ice core show a sharp peak in a corresponding period of the AD 775 event. However, annual $^{10}$Be variations in the...Go to contribution page
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Paolo Desiati (University of Wisconsin - Madison)05/08/2015, 17:00The IceCube Neutrino Observatory, designed to identify high energy neutrinos of astrophysical origin, efficiently collects the penetrating by-products of cosmic ray induced extensive air showers: the muons and neutrinos. IceCube, along with its densely instrumented in-fill array Deep-Core, has collected and identified approximately 450,000 neutrinos in the energy range from 10 GeV to over 100...Go to contribution page
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Dr John Pretz (Pennsylvania State University)05/08/2015, 17:30The High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory was completed this year at a 4100-meter site on the flank of the Sierra Negra volcano in Mexico. HAWC is a water Cherenkov ground array with the capability to distinguish 100 GeV - 100 TeV gamma rays from the hadronic cosmic-ray background. HAWC is uniquely suited to study extremely high energy cosmic-ray sources, search for...Go to contribution page
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Ilya Usoskin (University of Oulu)05/08/2015, 18:00Solar energetic particle (SEP) fluxes are typically quantified in the F30 units (integrated fluence of particles with energy above 30 MeV) and their direct measurements are available only for the last several decades. On the other hand, a reconstruction of major SEP events in the distant past (centennia-millennia) is possible using data on the cosmogenic isotopes $^{14}$C and $^{10}$Be in...Go to contribution page
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Prof. Bernd Heber (Institut fuer Experimentelle und Angewandte Physik, Christian-Albrechts-Universitaet Kiel)06/08/2015, 09:00Rapporteur talkGo to contribution page
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Paolo Maestro (Universita degli studi di Siena (IT))06/08/2015, 09:45Rapporteur talkGo to contribution page
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Valerio Verzi (INFN)06/08/2015, 11:00Rapporteur talkGo to contribution page
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Aya Ishihara (Chiba University)06/08/2015, 11:45Rapporteur talkGo to contribution page
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Dr Rolf Buehler (DESY Zeuthen)06/08/2015, 14:00rapporteur talkGo to contribution page
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Marianne Lemoine-Goumard (CNRS)06/08/2015, 14:45Rapporteur talkGo to contribution page
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Marco Cirelli (CEA/Saclay)06/08/2015, 16:00Rapporteur talkGo to contribution page
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Ad van den Berg (University of Groningen), Karl-Heinz Kampert (Universität Wuppertal)06/08/2015, 16:45
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