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