Dr
Kohta Murase
(Penn State)
1/7/16, 9:00 AM
oral
The origin of cosmic high-energy neutrinos is a new mystery in astroparticle physics. I review various theoretical scenarios and general implications that have been obtained, showing the importance of multi-messenger data.
Prof.
George W.S. Hou
(National Taiwan University)
1/7/16, 9:45 AM
oral
With PeV astro-neutrinos observed by IceCube, the natural thought is: what if one had better sensitivity and better pointing accuracy? That would be the genuine start of high energy neutrino astronomy. The Earth-skimming nu_tau method meets this purpose. Starting at PeV energy and higher, the nu_tau is unique in that a mountain becomes a nu_tau to tau conversion target, and a subsequent valley...
Prof.
Francis Halzen
(WIPAC University of Wisconsin-Madison)
1/7/16, 11:00 AM
oral
The IceCube project has transformed one cubic kilometer of natural Antarctic ice into a neutrino detector. The instrument detects more than 100,000 neutrinos per year in the GeV to PeV energy range. Among those, we have recently isolated a flux of high-energy cosmic neutrinos. I will discuss the instrument, the analysis of the data, and the significance of the discovery of cosmic neutrinos....
Kael HANSON
(University of Wisconsin - Madison)
1/7/16, 1:15 PM
oral
The existence of high-energy neutrinos from astrophysical sources is now fact. An excess of events at energies above 100 TeV was discovered by the IceCube collaboration in 2013; the sample of events grows by some dozen per year of operation. The originators of these neutrinos, however, continue to elude us and to date no sources have been conclusively identified. An expanded IceCube...
Prof.
Amanda Weinstein
(Iowa State University)
1/7/16, 2:00 PM
oral
The past decade and a half have seen the commissioning of four new ground based gamma-ray observatories (VERITAS, HESS, MAGIC, and HAWC) that have fundamentally changed our view of the gamma-ray sky above 100 GeV. It has also seen the launch of the Fermi Gamma-ray Space Telescope, which dramatically altered our view of the gamma-ray universe between 30 MeV and 300 GeV and is gathering an...
Nepomuk Otte
(Georgia Institute of Technology)
1/7/16, 3:15 PM
oral
The Cherenkov Telescope Array (CTA) will be a new observatory for the study of very-high-energy gamma-ray sources, designed to achieve an order of magnitude improvement in sensitivity in the ~30 GeV to ~100 TeV energy band compared to currently operating instruments: VERITAS, MAGIC, and H.E.S.S. CTA will probe known sources with unprecedented sensitivity, angular resolution, and spectral...
Brian Humensky
(Columbia University)
1/7/16, 4:00 PM
oral
The Cherenkov Telescope Array (CTA) will build on the success of the current generation of imaging air Cherenkov telescopes, H.E.S.S., MAGIC, and VERITAS, by providing an order of magnitude improvement in sensitivity in the core of its energy range (0.1 – 10 TeV), as well as covering a broader (30 GeV – 200 TeV) energy range with improved angular and energy resolution. The CTA Consortium is...
Tolga Yapici
(Michigan State University)
1/7/16, 4:45 PM
oral
The High Altitude Water Cherenkov (HAWC) Observatory is an extensive air shower array in the state of Puebla, Mexico at an altitude of 4100m. With its 22,000 m^2 instrumented area, wide field of view (~2 sr), and >95% uptime, HAWC present unique facility to study extremely high energy cosmic-ray sources such as studies active galaxies, gamma-ray bursts, supernova remnants and pulsar wind...
Dr
Michael Unger
(KIT & NYU)
1/8/16, 9:00 AM
oral
We will present recent results from the Pierre Auger Observatory
and discuss in particular measurements related to the mass composition of cosmic rays and to hadronic interactions at ultra-high energies.
Prof.
James Beatty
(Ohio State)
1/8/16, 9:45 AM
oral
The Auger collaboration is proposing an upgrade to elucidate mass composition and the origin of the flux suppression at the highest energies, search for a flux contribution from protons at the highest energies, and explore hadronic interactions at energies beyond those accessible at man-made accelerators. The upgrade consists of a surface scintillator detector (SSD) at each water Cherenkov...
Dr
Kyle Lawson
(University of British Columbia)
1/8/16, 11:00 AM
oral
I will discuss a novel dark matter model in which the dark matter is not a new fundamental particle but consists of macroscopic composite objects composed of standard model quarks and antiquarks. These objects are referred to as quark “nuggets”. In this model the dark matter is not fundamentally weakly interacting, instead its interactions are strongly suppressed by the nuggets' small...
Prof.
Uli Katz
(ECAP / University Erlangen)
1/8/16, 1:15 PM
oral
Building on the pioneering success of ANTARES, the next-generation deep-sea neutrino telescope KM3NeT will be constructed in the Mediterranean Sea. It will comprise two installations, one for neutrino astronomy with high-energy cosmic neutronos and one concentrating on neutrino physics using oscillations of the lower-energy neutrinos created in cosmic-ray interactions in the atmosphere. The...
Dr
Jordan Hanson
(Ohio State University)
1/8/16, 2:00 PM
oral
Interaction of the highest energy cosmic rays with the cosmic microwave background would produce neutrinos with energies of ~1 EeV. The spectrum of these cosmogenic neutrinos is now being constrained, and a generation of experiments based on the Askaryan effect are underway. We review the creation of high-energy cascades created in dielectric materials by electroweak interactions, and discuss...
Dr
Sadakazu Haino
(Institute of Physics, Academia Sinica)
1/8/16, 3:15 PM
oral
Energy spectra of cosmic-rays in GeV-TeV region have been directly measured by balloons and in space.
Particularly cosmic-ray antiparticles can provide unique opportunity to study fundamental physics such as indirect searches for Dark Matter and understanding of its nature.
More than four years after AMS (Alpha Magnetic Spectrometer) start taking data on the ISS (International Space...
Dr
Mauricio Bustamante
(Center for Cosmology and Astroparticle Physics, The Ohio State University)
1/8/16, 4:00 PM
oral
Cosmogenic neutrinos, produced in interactions of ultra-high-energy cosmic rays (UHECRs) with cosmological background photons, should exist above 100 PeV, but remain undetected. Their flux depends on the uncertain composition and maximum energy of UHECRs. Pessimistic predictions, of 10^{-10} GeV cm^{-2} s^{-1} sr^{-1} or lower, are beyond reach of existing detectors after reasonable exposure...
Prof.
Uli Katz
(ECAP / University Erlangen)
1/9/16, 9:00 AM
oral
Here, we infer the number of neutrinos expected in IceCube based on the calorimetric energy output of flat-spectrum radio quasars from X-rays to gamma rays. We consider quasars positionally coincident with the most energetic events detected by IceCube, taking into account their variable emission during the IceCube exposure time. Our findings support the conclusion that the observed neutrinos...
Prof.
Gordon Thomson
(University of Utah)
1/9/16, 9:45 AM
oral
The Telescope Array (TA) experiment is a large experiment located in Utah, USA, to study ultrahigh energy cosmic rays. TA is a hybrid experiment, consisting of a surface detector and a fluorescence detector. In this, the first TA talk, G. Thomson will cover the spectrum of cosmic rays from log(E) of 15.6 to 20.3, several anisotropy results including the TA Hotspot, and plans for the TAx4...
Prof.
John Belz
(University of Utah)
1/9/16, 11:00 AM
oral
This talk will begin with a discussion of issues related to the composition of the highest energy cosmic rays. We describe measurements of the distribution of air shower maximum, and evaluate these in the context of modern hadronic interaction models and the uncertainties associated with extrapolating low-energy cross sections to the UHECR regime. We present results of proton-air cross-section...
Prof.
Lawrence Wiencke
(Colorado School of Mines)
1/9/16, 1:15 PM
oral
The Extreme Universe Space Observatory on a super pressure balloon (EUSO-SPB) mission will make the first fluorescence observations of high energy cosmic ray extensive air showers by looking down on the atmosphere from near space. EUSO-SPB follows a successful overnight flight in August 2014 of the JEM-EUSO prototype mission named EUSO-Balloon. EUSO-Balloon recorded artificial tracks and...
Dr
Peter Gorham
(Department of Physics and Astronomy, Univ. of Hawaii)
1/9/16, 2:00 PM
The Antarctic Impulsive Transient Antenna is a long-duration NASA payload with a goal of the detection of the cosmogenic ultra-high energy neutrino flux. In this talk we will describe the payload and report on the third ANITA flight, completed in early 2015, as well as plans for the fourth flight later this year. In addition we will describe the ExaVolt Antenna payload which will be proposed...
Prof.
Albrecht Karle
(University of Wisconsin-Madison)
1/9/16, 3:15 PM
oral
Neutrino astronomy at energies beyond the highest energy IceCube events requires very large detection volumes. The Askaryan Radio Array (ARA) is designed to utilize the coherent emission of radio waves from neutrino-induced cascades of energies beyond ~30 PeV in the South Pole ice.
Three ARA detector stations have been deployed in 2011/12 and 2012/13 polar seasons. The stations are in...
Prof.
Makoto Sasaki
(ICRR, The University of Tokyo)
1/9/16, 4:00 PM
oral
Ashra-1 is an optical-telescope based detector system optimized to detect VHE particles aiming for "multi-particle astronomy." The unit telescope is distinguished by two features: (1) an ultra wide angle optics with 42-degree FOV (field of view) compromising with high imaging resolution of 3-arcmin; (2) advanced combined simultaneous trigger system both for Cherenkov and fluorescence...
