Mr
Lionel Brayeur
(Vrije Universiteit Brussel), Mr
Martin Casier
(Vrije Universiteit Brussel)
01/08/2015, 15:30
NU-EX
Poster contribution
Abstract: The origin of the Ultra-High Energy Cosmic Rays (UHECRs) is still unknown. Gamma-Ray Bursts (GRBs) are generally presented as possible candidates to host progenitors producing such UHECRs. However, the exact physical processes underlying GRBs are yet not fully understood. If GRBs are (partly) responsible for the observed UHECRs, they have to contain a hadronic component, and...
Ruth Hoffmann
(Bergische Uni Wuppertal)
01/08/2015, 15:30
NU-IN
Poster contribution
Ultra high energy neutrinos may be observed in ice by the emission of acoustic signals. The SPATS detector has successfully shown that GZK-neutrinos can be observed in the clear ice at the South Pole at the IceCube detector site. To explore other potential detection sites glacial ice in the Alps and in Antarctica has been surveyed for its acoustical properties. The purpose of the Enceladus...
Michael Schimp
(Rheinisch-Westfaelische Tech. Hoch. (DE))
01/08/2015, 15:30
NU-EX
Poster contribution
IceCube, a cubic-kilometer sized neutrino detector at the geographical South Pole, has recently discovered a diffuse all-flavor flux of astrophysical neutrinos. However, the corresponding astrophysical sources have not been identified yet. We focus on the results of the angular correlation analysis (arXiv:1408.0634). This analysis is sensitive to clusters of muon neutrino arrival directions as...
Takao Kuwabara
(Chiba University)
01/08/2015, 15:30
NU-EX
Poster contribution
Due to the large amount of flux, atmospheric neutrino is the main background for the IceCube neutrino telescope. Precise measurement of its spectrum allows us to reduce uncertainty of any kind of signal analysis. In this paper, we measure atmospheric muon and electron neutrino spectrum from first year of IceCube-86 detector. Track type events originate from muon neutrino and cascade type...
Dr
Jan Auffenberg
(RWTH Aachen University), Mr
Johannes Schumacher
(RWTH Aachen University)
01/08/2015, 15:30
NU-IN
Poster contribution
Air-Cherenkov Telescopes with SIPM based cameras have the potential to detect cosmic rays with a high duty cycle and efficiency in harsh environments.
For IceCube, the world's largest high-energy neutrino observatory presents unique opportunities to detect cosmic-ray air showers in coincidence with the deep-ice detector and an extended air-Cherenkov telescope array.
For neutrino astronomy,...
Dr
Dariusz Gora
(Humboldt University)
01/08/2015, 15:30
NU-IN
Poster contribution
This paper investigates the potential to detect tau neutrinos in the energy range of 1-1000 PeV searching for very inclined showers with imaging Cherenkov telescopes. A neutrino induced tau lepton escaping from the Earth may decay and initiate an air shower which can be detected by a fluorescence or Cherenkov telescope. We present here a study of the detection potential of Earth-skimming...
Gwenael Giacinti
(University of Oxford, Clarendon Laboratory)
01/08/2015, 15:30
NU-TH
Poster contribution
We have shown that the cosmic ray (CR) knee can be entirely explained by energy-dependent CR leakage from the Milky Way, with an excellent fit to all existing data ("escape model"), see Contribution 122, CR-TH, from D. SEMIKOZ.
In the present work, we have applied our escape model to other normal galaxies. We have also calculated the CR flux expected to leak from starburst galaxies. From...
Dr
T.C. Liu
(LeCosPA and Department of Physics, National Taiwan university)
01/08/2015, 15:30
NU-EX
Poster contribution
Extremely high energy neutrinos are attenuated by the materials surrounding the neutrino detector. Topography data can provides spatial distribution of material and become an essential factor in high energy neutrino experiment, especially for the earth skimming neutrino experiment. This study introduced the Antarctica topography data, including composite layers of rock, ice, and water, to...
Dr
Anthony Brown
(Durham University)
01/08/2015, 15:30
NU-EX
Poster contribution
A small subset of IceCube's extraterrestrial neutrino candidates are detected as track events. The track-like nature of these events within the IceCube detector affords us a ~1 degree angular resolution for the neutrino's origin. This neutrino angular resolution is comparable to the angular resolution of the Fermi Large Area Telescope (LAT) for ~1 GeV photons. Utilising a deep LAT exposure and...
Pablo Fernández
(UAM)
01/08/2015, 15:30
NU-IN
Poster contribution
The GADZOOKS! project is the proposed upgrade of the Super-Kamiokande (SK) detector in order to enable it to efficiently detect thermal neutrons. Inverse beta decay reactions, as well as charged current quasi-elastic (CCQE) scattering of low energy anti-neutrinos (up to a few hundreds of MeV) in SK, produce one positron and one neutron in the final state. The neutron thermalizes and is...
Andrii Neronov
(University of Geneva)
01/08/2015, 15:30
NU-TH
Poster contribution
Neutrino telescope IceCube has recently discovered astrophysical neutrinos with energies in the TeV-PeV range. We use the data of Fermi gamma-ray telescope to demonstrate that the neutrino signal has significant contribution from the Milky Way galaxy. Matching the gamma-ray and neutrino spectra we find that TeV-PeV Galactic cosmic rays form a powerlaw spectrum with the slope $p\simeq 2.5$....
Dr
Christophe Hugon
(INFN)
01/08/2015, 15:30
NU-EX
Poster contribution
Neutrinos have a very important role in the multi-messenger astronomy, therefore, in recent years, larges underwater and under-ice neutrinos telescopes have been designed to allow the detection of high energy neutrinos. The neutrino energy spectrum and direction are inferred based on the detection of the Cherenkov light induced by the secondary charged particles in the medium.
Optical modules...
Behrouz Khiali
(University of São Paulo)
01/08/2015, 15:30
NU-TH
Poster contribution
Detection of astrophysical high energy (HE) neutrinos in the range of TeV- PeV energies by IceCube observatory has opened new era in high energy astrophysics. Neutrinos with energies ~ PeV imply that they are originated from a source where cosmic rays (CRs) can be accelerated up to ~1017eV. Recently it has been shown that the observed TeV gamma-rays from radio galaxies may have a hadronic...
Delia Tosi
(WIPAC / UW Madison),
Kyle Jero
(WIPAC / UW Madison)
01/08/2015, 15:30
NU-EX
Poster contribution
The IceCube neutrino observatory includes a surface array, IceTop, designed to detect and study cosmic rays. This array, located directly above IceCube, can be used to distinguish astrophysical neutrinos from atmospheric neutrinos and penetrating muons, increasing the effective volume of the IceCube detector for the southern sky. In this contribution we present the efficiency of such a veto...
Marcel Zoll
(Stockholm Universitet)
01/08/2015, 15:30
NU-EX
Poster contribution
Gravitationally captured Dark Matter in the form of Weakly Interacting Massive Particles (WIMPs) can annihilate into standard-model particles, such as neutrinos. The IceCube neutrino detector at the South Pole is an excellent instrument to search for such a neutrino signal from the Sun. We present an alternative analysis approach which improves on previous ones, in background-dominated regions...
Dr
Mauricio Bustamante
(Center for Cosmology and Astroparticle Physics, The Ohio State University)
01/08/2015, 15:30
NU-TH
Poster contribution
Gamma-ray bursts (GRBs) conceivably contribute to the flux of ultra-high-energy (UHE) cosmic rays and neutrinos, with the latter expected to be produced in proton-photon interactions inside the relativistic plasma jets of GRBs. We consider UHE particle production in a model where cosmic rays are emitted both as neutrons and as protons that are able to overcome their magnetic confinement and...
Rickard Stroem
(Uppsala University)
01/08/2015, 15:30
NU-EX
Poster contribution
IceCube searches for neutrino point sources in the southern sky have traditionally been restricted to energies well above 100 TeV, where the background of down-going atmospheric muons becomes sufficiently low to be tolerated in searches. Recent developments of a data stream dedicated to the study of low-energy neutrinos from the Southern hemisphere enables searches to be extended far below...
Ralph Richard Engel
(KIT - Karlsruhe Institute of Technology (DE))
01/08/2015, 15:30
NU-TH
Poster contribution
The flux of atmospheric leptons is the main background for measurements of astrophysical
neutrinos. This natural beam can be used in studies of neutrino phenomenology at very
high energies, such as in searches for sterile neutrinos or the determination of the mass hierarchy.
The success of the measurements crucially depends on the precision of theoretical calculations. The
presented...
Anna Nelles
(Radboud University Nijmegen)
01/08/2015, 15:30
NU-EX
Poster contribution
The ARIANNA collaboration has recently completed the installation of a seven-station hexagonal array of radio detectors. This Hexagonal Radio Array (HRA) serves as a prototype for a large neutrino telescope planned for construction on the Ross Ice Shelf of Antarctica. Upgraded hardware installed during the 2014 deployment season will be summarized. A review of ice properties at the ARIANNA...
Stefan Geißelsöder
(FAU Erlangen)
01/08/2015, 15:30
NU-EX
Poster contribution
ANTARES is the largest operational neutrino telescope in the Northern Hemisphere, located in the Mediterranean Sea at a depth of 2500 metres. The direction and energy of the observed particles are reconstructed from the
time and amplitude information recorded by the photomultipliers. The collected set of reconstructed events can be analysed with respect to the spatial, temporal and energy...
Piera Sapienza
(LNS)
01/08/2015, 15:30
NU-EX
Poster contribution
KM3NeT is a large research infrastructure that will consist of a network of deep-sea neutrino telescopes in the Mediterranean Sea, of which the ARCA detector installed at the CapoPassero site (Italy) is optimised for studying high-energy neutrinos of cosmic origin. The "golden channel" for neutrino astronomy with Cherenkov telescopes is the muon-neutrino charged-current interaction. The...
Dr
Dariusz Gora
(Humboldt University)
01/08/2015, 15:30
NU-EX
Poster contribution
IceCube is capable of monitoring the whole sky continuously, while optical and high energy photon telescopes have limited fields of view and are not likely to observe a potential neutrino-flaring source at the time such neutrinos are recorded. The use of neutrino-triggered alerts thus aims at increasing the availability of simultaneous multi-messenger data, which can increase the discovery...
Luiz da Silva
(University of Wisconsin - Milwaukee)
01/08/2015, 15:30
NU-TH
Poster contribution
The recent observation of an astrophysical flux of neutrinos at the IceCube telescope represents the ''first light'' in the burgeoning field of neutrino astronomy. Motivated by this long-awaited discovery, we re-examine the potential high energy neutrino emission from compact binaries on the basis of state-of-the-art proton acceleration models, and interaction of those protons with plasma...
Dr
Makoto Miura
(Kamioka observatory, ICRR, University of Tokyo)
01/08/2015, 15:30
NU-EX
Poster contribution
As a general feature, Grand Unified Theories (GUTs) predict that protons will decay someday. Proton decay search needs large detector which contains tremendous number of protons and backgrounds of this search are cosmic rays, especially, atmospheric neutrinos. Super-Kamiokande, which is known as a famous neutrino detector, also has the highest sensitivity for nucleon decays in the world. This...
Prof.
Andrea Santangelo
(Institut fuer Astronomie und Astrophysik, Tuebingen)
01/08/2015, 15:30
NU-IN
Poster contribution
Similarly to extreme energy cosmic rays (EECRs), neutrinos at energies exceeding $5\times 10^{19}$ eV are expected to interact in the Earth's atmosphere and create extensive air showers. The JEM-EUSO mission, developed to be hosted onboard the JEM module of the International Space Station, aims at detecting these extensive air showers from space by means of the fluorescent and diffusively...
John Felde
(University of Maryland)
01/08/2015, 15:30
NU-EX
Poster contribution
Gamma Ray Bursts (GRBs) have long been suspected as the sources for the ultra high energy cosmic rays. For this to be true, a mechanism must exist within the GRB to produce hadrons, a consequence of which is the production of neutrinos. So far, no significant observation has been made that suggests GRBs produce neutrinos. The IceCube neutrino Observatory, a cubic kilometer ice Cherenkov...
Steven Barwick
(University of California)
01/08/2015, 15:30
NU-IN
Poster contribution
The ARIANNA collaboration has recently completed the installation of a seven-station hexagonal array of radio detectors. These detectors seek to measure radio pulses generated by extremely high energy cosmic neutrino interactions. The detectors are deployed on the Ross Ice Shelf of Antarctica and collect data during the austral summer months. Data is delivered off continent in near real-time....
Dominik Stransky
01/08/2015, 15:30
NU-EX
Poster contribution
KM3NeT is a future research infrastructure hosting the next-generation underwater neutrino observatory in the Mediterranean Sea. Within KM3NeT, the ARCA detector will be devoted to the observation of high-energy cosmic neutrinos both in diffuse and point source mode. The discovery of cosmic high energy neutrinos by the IceCube collaboration with a large fraction of shower-like events has led...
salvatore galata
(CNRS)
01/08/2015, 15:30
NU-EX
Poster contribution
KM3NeT is a next-generation research infrastructure being installed in the deep seas at the south coasts of Europe. Within this infrastructure, KM3NeT/ORCA is a future neutrino telescope targeting the measurement of the neutrino mass hierarchy (NMH) by investigating atmospheric neutrino oscillation in matter in the energy range between 5 and 20 GeV. Charged-current muon-neutrino events...
Luigi Antonio Fusco
(University of Bologna)
01/08/2015, 15:30
NU-EX
Poster contribution
KM3NeT is a future research infrastructure hosting the next-generation underwater neutrino observatory in the Mediterranean Sea. Within KM3NeT, the ORCA detector will be devoted to the measurement of the neutrino mass hierarchy, by investigating matter-induced effects in the oscillation pattern of atmospheric neutrinos. The main background for this search is given by atmospheric muons coming...
Reetanjali Moharana
(University of Johannesburg)
01/08/2015, 15:30
NU-TH
Poster contribution
Detection of 35 very high-energy (VHE) neutrinos by the IceCube Neutrino Observatory has opened a new chapter in multi-messenger astronomy. Due to large errors in measuring the directions of the neutrino shower-type events, which dominate the current event list, it is difficult to identify their astrophysical sources. We perform cross-correlation study of IceCube neutrino events with...
493.
Search for GRB neutrino emission according to the photospheric model with the ANTARES telescope
Matteo Sanguineti
(INFN Genova - Università di Genova)
01/08/2015, 15:30
NU-EX
Poster contribution
The ANTARES detector is the largest neutrino telescope currently in operation in the North Hemisphere.
One of the main goals of the ANTARES detector is the search for point-like neutrino sources including transient sources like GRBs.
In the so-called photospheric model for the emission from GRBs the interaction of the radiation field with the leptonic component of the outflow could lower...
Mr
Giuliano Maggi
(Vrije Universiteit Brussel)
01/08/2015, 15:30
NU-EX
Poster contribution
The recent discovery of high-energy cosmic neutrinos by the IceCube neutrino observatory opens up a new field in physics, the field of neutrino astronomy. Using the IceCube neutrino detector we plan to search for high energy neutrinos emitted from Active Galactic Nuclei (AGN). AGN are believed to be one of the most promising sources for emitting these weakly interacting particles. We discuss a...
Ms
Gabriela Pavalas
(Institute of Space Science)
01/08/2015, 15:30
NU-EX
Poster contribution
About thirty years ago, strange quark matter (SQM) was hypothesized to be the ground state of hadronic matter and was also suggested as a cold dark matter candidate. Although there is no experimental or astrophysical evidence for its existence so far, SQM may be present in the cosmic radiation as relic particles of the early Universe, or as fragments released in binary strange star collisions...
Mr
Damien TURPIN
(ANTARES-CPPM)
01/08/2015, 15:30
NU-EX
Poster contribution
Gamma-ray bursts (GRB) are the most energetic transient sources observed in the Universe.
They are supposed to be produced by the emission of an inhomogeneous relativistic jet in
which energy dissipation occurs via internal shocks. In these shocks, particles as electrons and
protons could be accelerated at very high energies via Fermi acceleration processes. Thus,
GRB are promising...
Thomas Heid
(Universitaet Erlangen)
01/08/2015, 15:30
NU-EX
Poster contribution
A main objective of the future neutrino telescope KM3NeT/ARCA is the detection and measurement of extraterrestrial neutrinos. Atmospheric neutrinos, which are produced in particle showers in the Earth's upper atmosphere, represent the main background to this signal. Muon bundles which accompany downgoing atmospheric neutrinos can be used to differentiate the latter from their extraterrestrial...
Dr
Galina Vankova-Kirilova
(University of Sofia, Bulgaria)
01/08/2015, 15:30
NU-IN
Poster contribution
The ultra high energy cosmic neutrinos are source of knowledge for both astrophysical
mechanisms of particle acceleration and fundamental interactions. They open a window into the very distant and high-energy Universe that is difficult to access by any human means and devices. The possibility of detecting them in large exposure space-based apparatus, like JEM-EUSO, is an experimental...
Jannik Hofestädt
(ECAP)
01/08/2015, 15:30
NU-EX
Poster contribution
The determination of the neutrino mass hierarchy is a central goal of upcoming neutrino physics experiments. In a detailed investigation we have evaluated the potential of the multi-megaton underwater KM3NeT/ORCA detector (Oscillation Research with Cosmics in the Abyss) to perform this measurement using atmospheric neutrinos in the multi-GeV energy range. The detector will be a dense array of...
Javier Gonzalez
(Bartol Research Institute, Univ Delaware),
Sebastian Euler
(Uppsala University)
01/08/2015, 15:30
NU-EX
Poster contribution
Motivated by the evidence of astrophysical neutrinos seen in IceCube, we consider various array configurations of particle detectors and study their efficiency for identifying neutrinos of astrophysical origin when combined with IceCube or a next generation neutrino detector at the South Pole. The identification of astrophysical neutrinos is accomplished by tagging muons and neutrinos of...
Prof.
Akimichi Taketa
(Earthquake Research Institute, University of Tokyo)
01/08/2015, 15:30
NU-IN
Poster contribution
Neutrinos have favorable properties for measuring the elemental composition deep inside the earth's interior. First, they propagate a long distance almost undisturbed through the earth due to their weak interactions with matter. Secondly, neutrino oscillations in matter are sensitive to the electron density of the medium traversed by them. Therefore, neutrinos can be used for a probe to...
Prof.
Huanyu JIA
(School of Physical Science and Technology, Southwest Jiaotong University)
01/08/2015, 15:30
NU-TH
Poster contribution
Cosmic ray particle acceleration in supernovae is expected to occur. A protoneutron star is formed in the aftermath of the supernova explosion of a massive star. Therefore, the study of properties and structure of protoentron stars has great implications for investigating the origin and acceleration of cosmic rays. Considering the baryon octet which comprises of the least massive baryons and...
Ke Fang
01/08/2015, 15:30
NU-TH
Poster contribution
The electromagnetic wind of a fast-spinning magnetars has been proposed as a site for cosmic rays acceleration from very high energies (VHE) to ultrahigh energies (UHE). We show how high-energy neutrinos would be produced in these scenarios, when the accelerated particles interact with the baryons of the expanding supernova ejecta and the radiation fields in the pulsar wind nebula. In this...
Charles Timmermans
(Dept. Exptl. High-Energy Physics-High Energy Physics Institute)
01/08/2015, 15:30
NU-IN
Poster contribution
High-energy neutrino astronomy will probe the working of the most violent phenomena in the Universe. The GRAND (Giant Radio Array for Neutrino Detection) project consists of an array of 200 000 radio antennas deployed over a total area of 200 000 km2 in a mountainous site. The array aims at detecting high energy neutrinos (E>10^16 eV) via the measurement of air showers induced by the decay in...
Alexander Stasik
(DESY)
01/08/2015, 15:30
NU-EX
Poster contribution
The current operation of online programs for sending follow-up alerts to optical, X-ray and gamma-ray telescopes shows the feasibility of neutrino-triggered multi-messenger astronomy. Building on the experience of these programs, we generalize the approach and merge them into a combined generic framework. The upgrade consists of a single event stream selected at the South Pole and transmitted...
Damien DORNIC
(CPPM)
01/08/2015, 15:30
NU-EX
Poster contribution
ANTARES, the largest neutrino telescope operating in the Northern Hemisphere, performs multiple analyses in the search for neutrino point-source candidates. In a time-dependent search, the background is drastically reduced, and the point-source sensitivity improved, by selecting a narrow time window around the assumed neutrino production period. Blazars are particularly attractive potential...
