26-30 October 2015
Asia/Tokyo timezone
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Neutrinos

Date: from 26 Oct 14:00 to 29 Oct 18:55

Conveners

  • 26 Oct 14:00 - 16:05
    • Ackermann, Markus (DESY)
    • Yoshida, Shigeru (Chiba University)
  • 29 Oct 16:30 - 18:55
    • Ackermann, Markus (DESY)
    • Yoshida, Shigeru (Chiba University)

Timetable | Contribution List

Displaying 16 contributions out of 16
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
The IceCube Collaboration has observed a high-energy astrophysical neutrino flux using neutrino candidates with interaction vertices contained within the instrumented volume. A complementary measurement can be done with charged current muon neutrinos where the interaction vertex can be outside the instrumented volume. Due to the large muon range the effective area is significantly larger but the f ... More
Presented by Mr. Sebastian SCHOENEN on 29/10/2015 at 8:25
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
IceCube's optical and X-ray follow-up program searches the northern sky for neutrino emission from short transient sources like GRBs or core-collapse supernovae. Follow-up observations with the Swift satellite and optical telescopes can be triggered when two or more muon neutrinos are detected within 100 s and with reconstructed directions that are compatible with a single source origin. Within th ... More
Presented by Ms. Nora Linn STROTJOHANN
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
The IceCube neutrino observatory features a kilometer-cubed deep detector and a surface component, IceTop, instrumenting the square-kilometer footprint of the detector. IceTop consists of ice-filled tanks equipped with optical sensors capable of detecting charged particles produced in air showers. Besides measuring the cosmic-ray spectrum and composition, IceTop can be used as a veto for IceCube. ... More
Presented by Delia TOSI on 26/10/2015 at 6:00
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
Fast-spinning newborn pulsars are promising sources of ultrahigh energy cosmic rays (UHECRs). With proper injection abundances, integrated cosmic rays from the extragalactic pulsar population can match UHE observation in all aspects - energy spectrum, chemical composition, and anisotropy. High-energy neutrinos would be produced unavoidably, when accelerated UHECRs travel through the supernova enve ... More
Presented by Ke FANG on 29/10/2015 at 9:10
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
The origin of high-energy neutrinos detected by the IceCube neutrino telescope is a big mystery of high-energy astrophysics. We propose low-luminosity active galactic nuclei (LLAGNs) as a novel source of the high-energy neutrinos. The radiation inefficient accretion flows (RIAFs) are believed to exist in LLAGNs. The Coulomb collisions inside RIAFs is so inefficient that plasmas naturally have high ... More
Presented by Dr. Shigeo KIMURA on 29/10/2015 at 8:55
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
Sources of the 53 high energy neutrino events detected by IceCube with energy between 20 TeV and 2.7 PeV is one of the outstanding puzzles in recent years. Suggestions range from Galactic to extragalactic sources, and from standard model interactions to dark matter decay or annihilation. We perform a statistical analysis of the distribution of these neutrino events and astrophysical sources. Our r ... More
Presented by Dr. REETANJALI MOHARANA on 29/10/2015 at 8:10
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
The KM3NeT Collaboration is currently constructing the first phase of a next-generation neutrino telescope on two sites in the Mediterranean Sea: KM3NeT-FR near Toulon (France), and KM3NeT-IT near Capo Passero in Sicily (Italy). Each site will host a three-dimensional array of thousands of photosensors that will detect the Cherenkov light resulting from neutrino interactions in the vicinity o ... More
Presented by Veronique VAN ELEWYCK on 26/10/2015 at 14:00
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
I review various scenarios for the origin of high-energy cosmic neutrinos, and show how multi-messenger data can be utilized to constrain the models. I discuss the present implications and prospects for the future observation.
Presented by Prof. Kohta MURASE on 26/10/2015 at 14:40
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
Acceleration of 's and 's modi es the flavor ratio at Earth (at astrophysical sources) of neutrinos produced by pion decay, nu_e : nu_mu : nu_tau , from 1 : 1 : 1 (1 : 2 : 0) to 1 : 1:8 : 1:8 (0 : 1 : 0) at high energy, because pions decay more than muons during secondary-acceleration. The neutrino spectrum accompanies a flat excess, differently from the case of energy losses. With the ... More
Presented by Dr. Norita KAWANAKA on 29/10/2015 at 8:40
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
IceCube is a cubic-kilometer neutrino observatory buried deep in the ice sheet at the geographic South Pole. The data from its first few years of operation have revealed an excess of high-energy neutrino events in multiple detection channels that is incompatible with purely atmospheric origins, which we interpret as evidence for a flux of neutrinos from unresolved astrophysical sources. At th ... More
Presented by Dr. Jakob VAN SANTEN on 29/10/2015 at 16:30
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
The ANTARES detector, located in the deep Mediterranean sea off the coast of Toulon (France), is the first deep-sea neutrino telescope and has been running in its final configuration since 2008. It consists of a 3D array of 885 photomultipliers distributed on 12 lines anchored on the sea bed, that detect the Cherenkov light induced by upward-going charged leptons produced by neutrino interactions ... More
Presented by Mr. Rodrigo GRACIA RUIZ on 29/10/2015 at 16:50
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
The Askaryan Radio Array is a neutrino radio detector array being built at the south pole. It aims at the observation of cosmic ultra high energy neutrino (E > 10PeV) via the coherent radio waves emitted from the charge excess in the cascade induced after the interaction of the neutrinos in ice. The radio signal expected by ARA rely mostly on the simulation of the emission process ... More
Presented by Mr. Romain GAIOR on 26/10/2015 at 6:30
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
Many of the astrophysical sources and violent phenomena observed in our Universe are potential emitters of gravitational waves and high energy neutrinos. Both these probes are cosmic messengers that may escape much denser media than photons. LIGO and Virgo scientific collaborations have carried out joint searches for gravitational waves and high energy neutrinos from IceCube and ANTARES neutrino ... More
Presented by Dr. Di Palma IRENE on 29/10/2015 at 9:25
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
The Askaryan Radio Array (ARA) is an ultra-high energy (>100 PeV) cosmic neutrino detector which is in phased construction near the South Pole. ARA searches for radio Cherenkov-like emission from particle cascades induced by neutrino interactions in the ice using radio frequency antennas (~150-800MHz) deployed at a design depth of 200m in the Antarctic ice. A prototype ARA Testbed station was depl ... More
Presented by Dr. Michael DUVERNOIS on 26/10/2015 at 6:15
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
The feasibility of the detection of TeV gamma-rays from astrophysical objects has been carried out using the INO-ICAL detector. The detection of very high energy gamma-rays has been followed by the detection of down going muons produced through the electromagnetic showers initiated by gamma-ray in the atmosphere. As the produced muons through this process are of same charge ratio, they might be ... More
Presented by Dr. REETANJALI MOHARANA on 26/10/2015 at 6:45
Type: Oral presentation Session: Neutrinos
Track: Neutrino physics
IceCube has confirmed the existence of the long-sought high-energy astrophysical neutrinos. Recently, the flavor composition of the diffuse flux, that is, the proportion of electron-, muon-, and tau-flavor in it, was measured for the first time. This rich observable can reveal information about physical conditions in the production, propagation, and detection of neutrinos, including whether there ... More
Presented by Dr. Mauricio BUSTAMANTE on 26/10/2015 at 14:20
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