-
Simon Bacholle (APC- Paris Diderot university)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Sarah Mueller (KIT)04/08/2015, 16:00CR-EXPoster contributionThe 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
-
Thomas Paul (Lehman College, City University of New York)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Mr Mohammad Sabouhi (Department of Physics , Semnan University, P.O. Box 35196-45399, Semnan, Iran)04/08/2015, 16:00CR-THPoster contributionAbstract: 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
-
Mr Sayan Biswas (Senior Research Fellow, Bose Institute)04/08/2015, 16:00CR-THPoster contributionFinite 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
-
Mr Camille Moretto (Laboratoire de l'Accélérateur Linéaire, Université Paris-Sud/CNRS)04/08/2015, 16:00CR-INPoster contributionEUSO-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
-
Rashmi Johnson (SSN College of Engineering)04/08/2015, 16:00CR-THPoster contributionThe 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
-
753. An Additional Component Blurring the Transition between Galactic and Extragalactic Cosmic Rays?Olivier Deligny (CNRS/IN2P3)04/08/2015, 16:00CR-THPoster contributionRecent 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
-
Mr Christian Sarmiento-Cano (Universidad Industrial de Santander)04/08/2015, 16:00CR-EXPoster contributionThe 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
-
Beatrice Panico (INFN Napoli (IT))04/08/2015, 16:00CR-INPoster contributionEUSO-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
-
Mr Mohammad Sabouhi (Department of Physics , Semnan University, P.O. Box 35196-45399, Semnan, Iran)04/08/2015, 16:00CR-THPoster contributionAbstract: 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
-
Dr James Adams (University of Alabama in Huntsville)04/08/2015, 16:00CR-INPoster contributionThe 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
-
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, 16:00CR-INPoster contributionAbstract: 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
-
Jose Luis Sánchez (University of León), Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Jose Luis Sánchez (University of León), Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00CR-EXPoster contributionEUSO-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
-
Nicola Tomassetti (Centre National de la Recherche Scientifique (FR))04/08/2015, 16:00CR-THPoster contributionThe 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
-
Mr Ramesh Koirala (University of Delaware)04/08/2015, 16:00CR-EXPoster contributionThe 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
-
Dr Rogerio M. de Almeida (Universidade Federal Fluminense)04/08/2015, 16:00CR-THPoster contributionCosmic 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
-
Ms Mika Kagaya (Ibaraki University)04/08/2015, 16:00CR-THPoster contributionThe 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
-
Maxim Pshirkov (Moscow State University)04/08/2015, 16:00CR-THPoster contributionExtragalactic 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
-
Dr Gwenael Giacinti (University of Oxford, Clarendon Laboratory)04/08/2015, 16:00CR-THPoster contributionProgenitors 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
-
Vladimir Zirakashvili (IZMIRAN)04/08/2015, 16:00CR-THPoster contributionWe 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
-
Prof. Istomin Yakov (Moscow Institute Physics and Technology)04/08/2015, 16:00CR-THPoster contributionFrom 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
-
Svetlana Rogovaia (IZMIRAN)04/08/2015, 16:00CR-THPoster contributionThe 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
-
Sylvie Dagoret-Campagne (LAL/IN2P3/CNRS)04/08/2015, 16:00CR-INPoster contributionRecently, 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
-
Prof. David Eichler (Ben Gurion University)04/08/2015, 16:00CR-THPoster contributionThe 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
-
Anatoly Petrukhin (National Research Nuclear University MEPhI)04/08/2015, 16:00CR-EXPoster contributionResults 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
-
Dr Shoko Miyake (National Institute of Technology, Ibaraki College)04/08/2015, 16:00CR-THPoster contributionSupernova 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
-
Rahul Kumar (Ben Gurion University)04/08/2015, 16:00CR-THPoster contributionThe 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
-
Prof. Mamadsho Ilolov (Center of Innovative Development of Science and New Technologies of Academy of Sciences of Tajikistan)04/08/2015, 16:00CR-THPoster contributionClassical 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
-
Lawrence Wiencke (Colorado School of Mines)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Simon Bacholle (APC- Paris Diderot university)04/08/2015, 16:00CR-INPoster contributionEUSO-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
-
Johannes Eser (Colorado School of Mines)04/08/2015, 16:00CR-INPoster contributionEUSO-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
-
Marco Ricci (Istituto Nazionale Fisica Nucleare Frascati (IT))04/08/2015, 16:00CR-INPoster contribution
-
Dr Kenji Shinozaki (University of Tübingen)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Dr Francesco Fenu (University of Torino, INFN Torino), Naoto Sakaki (Osaka City University), Dr Yoshiyuki Takizawa (RIKEN)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Nicola Tomassetti (Centre National de la Recherche Scientifique (FR))04/08/2015, 16:00CR-THPoster contributionAbundances 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
-
Michael Karus (Karlsruhe Institute of Technology)04/08/2015, 16:00CR-INPoster contributionIn 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
-
Mario Nicola Mazziotta (Universita e INFN, Bari (IT))04/08/2015, 16:00CR-EXPoster contributionThe 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
-
Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Nicola Tomassetti (Centre National de la Recherche Scientifique (FR))04/08/2015, 16:00CR-THPoster contributionThe 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
-
Imen Al Samarai, Olivier Deligny (CNRS/IN2P3)04/08/2015, 16:00CR-EXPoster contributionA 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
-
Mr Alejandro Guzman (Institute of Astronomy and Astrophysics, University of Tübingen)04/08/2015, 16:00CR-INPoster contributionCosmic 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
-
Dr Kajino Fumiyoshi (Konan University)04/08/2015, 16:00CR-INPoster contributionKLYPVE 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
-
Yutaka Ohira (Aoyama Gakuin University)04/08/2015, 16:00CR-THPoster contributionThe 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
-
ryoichi katsuya04/08/2015, 16:00CR-EXPoster contributionCosmic 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
-
Dr Marco Ricci (INFN, Laboratori Nazionali di Frascati, Frascati (Roma), Italy)04/08/2015, 16:00CR-INPoster contributionFor 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
-
Emanuele Grimaldo04/08/2015, 16:00CR-THPoster contributionParticles 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
-
Simon Mackovjak (ISDC - Data Centre for Astrophysics, Astronomy Department, University of Geneva, Switzerland)04/08/2015, 16:00CR-INPoster contributionPrecise 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
-
Renat Sibatov (Ulyanovsk State University)04/08/2015, 16:00CR-THPoster contributionOne 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
-
Jakub Vicha (Acad. of Sciences of the Czech Rep. (CZ))04/08/2015, 16:00CR-EXPoster contributionThe 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
-
Prof. OLEG DALKAROV (P.N.Lebedev Physical Institute)04/08/2015, 16:00CR-THPoster contributionA 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
-
Prof. Jing Huang (Institute of High Energy Physics, CAS), Dr Ying Zhang (Institute of High Energy Physics)04/08/2015, 16:00CR-THPoster contributionCR 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
-
Blahoslav Pastirčák (Institute of Experimental Physics SAS, Košice, Slovakia)04/08/2015, 16:00CR-INPoster contributionJEM-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
-
Prof. Anatoly Petrukhin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))04/08/2015, 16:00CR-THPoster contributionEAS 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
-
Mr camille catalano (irap)04/08/2015, 16:00CR-INPoster contributionEUSO-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
-
Jose Luis Sánchez (University of León), Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Dr Giovanni Lamanna (Centre National de la Recherche Scientifique (FR))04/08/2015, 16:00CR-THPoster contributionThe 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
-
1075. Photoelectron counting rate measurements in the UV camera during the EUSO-BALLOON night flightJulio Arturo Rabanal Reina (LAL/IN2P3/CNRS)04/08/2015, 16:00CR-EXPoster contributionEUSO-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
-
Mario Bertaina (Univ. & INFN Torino)04/08/2015, 16:00CR-EXOral contributionEUSO-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
-
Alexandre Marcowith (LUPM Université Montpellier)04/08/2015, 16:00CR-THPoster contribution
-
Prof. Martin Pohl (DESY)04/08/2015, 16:00CR-THPoster contributionThe 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
-
Ms Aera JUNG (AstroParticule et Cosmologie, Univ. Paris Diderot, CNRS/IN2P3, Paris, France)04/08/2015, 16:00CR-EXPoster contributionThe 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
-
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, 16:00CR-EXPoster contributionA 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
-
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, 16:00CR-EXPoster contributionThe 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
-
Prof. Jacek Niemiec (Institute of Nuclear Physics PAN, Krakow, Poland)04/08/2015, 16:00CR-THPoster contributionThe 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
-
Prof. Ramanath Cowsik (Department of Physics and McDonnell Center for the Space Sciences Washington University, St. Louis, MO 63130)04/08/2015, 16:00CR-THPoster contributionIn 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
-
Prof. INOUE Naoya (Graduate School of Science and Enginnering, SAITAMA University)04/08/2015, 16:00CR-EXPoster contributionThe 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
-
Artem Bohdan04/08/2015, 16:00CR-THPoster contributionWe 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
-
Huihai He (Institute of High Energy Physics, CAS)04/08/2015, 16:00CR-INPoster contribution
-
Dr Francesco Fenu (University of Torino - INFN Torino)04/08/2015, 16:00CR-INPoster contributionEUSO--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
-
Dr Thomas Mernik (Institute for Astronomy and Astrophysics, University of Tübingen)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Prof. Antonio Codino (University of Perugia and INFN)04/08/2015, 16:00CR-THPoster contributionMeasurements 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
-
Andrii Neronov (University of Geneva), Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00CR-INPoster contributionAn 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
-
Dr James Adams (Univ. of Alabama in Huntsville)04/08/2015, 16:00CR-INPoster contributionThe 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
-
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, 16:00CR-INPoster contributionThe 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
-
Antonio Codino (University of Perugia and INFN)04/08/2015, 16:00CR-THPoster contributionThe 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
-
Prof. Rossella Caruso (Department of Physics and Astronomy - University of Catania and INFN Section of Catania)04/08/2015, 16:00CR-INPoster contributionJEM-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
-
Dr Thomas Mernik (Institute for Astronomy and Astrophysics, University of Tübingen)04/08/2015, 16:00CR-INPoster contributionJEM-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
-
Dr Francesco Fenu (University of Torino - INFN Torino)04/08/2015, 16:00CR-INPoster contributionJEM--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
-
Patrick Hunt (Colorado School of Mines)04/08/2015, 16:00CR-INPoster contributionWe 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
-
Antonio Codino (University of Perugia and INFN)04/08/2015, 16:00CR-THPoster contributionThe 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
-
Dr Francesco Fenu (University of Torino - INFN Torino)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Maria Rodriguez Frias (Space and Astroparticle Group UAH Madrid)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Mario Bertaina (Univ. & INFN Torino)04/08/2015, 16:00CR-INPoster contributionEUSO-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
-
Andreas Haungs (Karlsruhe Institute of Technology)04/08/2015, 16:00CR-INPoster contributionThe 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
-
Epifanio Ponce (BUAP)04/08/2015, 16:00CR-EXPoster contributionThe 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
-
Robert Brose (DESY)04/08/2015, 16:00CR-THPoster contributionSupernova 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
-
Noemie Globus (Tel Aviv University)04/08/2015, 16:00CR-THPoster contributionRecent 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
-
1098. Uncertainties on propagation parameters: impact on the interpretation of the positron fractionyoann genolini (LAPTh)04/08/2015, 16:00CR-THPoster contributionThe 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
-
Davide Rozza (Universita & INFN, Milano-Bicocca (IT))04/08/2015, 16:00CR-THPoster contributionThe 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
-
Sara Tomita (Aoyama Gakuin University)04/08/2015, 16:00CR-THPoster contributionThe 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
-
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, 16:00CR-EXPoster contributionA 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
Choose timezone
Your profile timezone: