Conveners
Neutrinos
- Markus Ackermann (DESY)
- Shigeru Yoshida (Chiba University)
Neutrinos
- Markus Ackermann (DESY)
- Shigeru Yoshida (Chiba University)
Veronique Van Elewyck
(APC)
26/10/2015, 14:00
Neutrino physics
Oral presentation
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...
Dr
Mauricio Bustamante
(Center for Cosmology and Astroparticle Physics, The Ohio State University)
26/10/2015, 14:20
Neutrino physics
Oral presentation
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...
Prof.
Kohta Murase
(Penn State University)
26/10/2015, 14:40
Neutrino physics
Oral presentation
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.
Delia Tosi
(University of Wisconsin - Madison and WIPAC)
26/10/2015, 15:00
Neutrino physics
Oral presentation
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...
Dr
Michael DuVernois
(University of Wisconsin-Madison)
26/10/2015, 15:15
Neutrino physics
Oral presentation
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...
Mr
Romain Gaior
(Chiba University)
26/10/2015, 15:30
Neutrino physics
Oral presentation
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 ...
Dr
REETANJALI MOHARANA
(University of Johannesburg)
26/10/2015, 15:45
Neutrino physics
Oral presentation
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...
Dr
Jakob van Santen
(DESY Zeuthen)
29/10/2015, 16:30
Neutrino physics
Oral presentation
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....
Mr
Rodrigo Gracia Ruiz
(APC)
29/10/2015, 16:50
Neutrino physics
Oral presentation
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...
Dr
REETANJALI MOHARANA
(University of Johannesburg)
29/10/2015, 17:10
Neutrino physics
Oral presentation
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....
Mr
Sebastian Schoenen
(RWTH Aachen, 3. Physikalisches Institut B)
29/10/2015, 17:25
Neutrino physics
Oral presentation
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...
Dr
Norita Kawanaka
(The University of Tokyo)
29/10/2015, 17:40
Neutrino physics
Oral presentation
Acceleration of 's and 's modies 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 flavor...
Dr
Shigeo KIMURA
(Tohoku University)
29/10/2015, 17:55
Neutrino physics
Oral presentation
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...
Ke Fang
(University of Chicago)
29/10/2015, 18:10
Neutrino physics
Oral presentation
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...
Dr
Di Palma Irene
(University of Rome, "La Sapienza")
29/10/2015, 18:25
Neutrino physics
Oral presentation
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...
