IPA 2013

Session

Neutrino Astrophysics II

14 May 2013, 14:00

Union South

64. Observation of Very High Energy Neutrinos in IceCube

Claudio Kopper (o=uwmad,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

14/05/2013, 14:00

Neutrino Astrophysics Parallel

Observing astrophysical neutrinos provides a unique insight into the acceleration mechanism of cosmic ray sources: neutrinos can only be produced in hadronic interactions and are neither absorbed nor deflected, thus pointing back to their source. The talk will cover hints for an excess of neutrinos above the atmospheric spectrum seen in recent IceCube analyses and discuss the observation of...

70. Spatial Clustering Analysis of the Very High Energy Neutrinos in IceCube

Naoko Kurahashi Neilson (o=uwmad,ou=Institutions,dc=icecube,dc=wisc,dc=edu)

14/05/2013, 14:15

Neutrino Astrophysics Parallel

Short report on the analysis of the spatial clustering of the events discussed in the previous talk.

1. Cosmic Neutrino Flavor Ratios with Broken ν_μ-ν_τ Symmetry

Thomas J Weiler (Vanderbilt University)

14/05/2013, 14:30

Neutrino Astrophysics Parallel

Reactor neutrino experiments have now observed a nonzero value for \theta_{13} with a significance above 10-sigma. Nonzero values for theta_13 break a ν_μ-ν_τ symmetry, which has qualitative as well as quantitative implications for the time-evolution of neutrino flavors. In particular, the large-distance flavor evolution matrix, non-invertible with ν_μ-ν_τ symmetry, becomes invertible. This...

38. High-Energy Neutrinos from Cosmic Explosions

Dr Kohta Murase (Institute for Advanced Study)

14/05/2013, 14:50

Neutrino Astrophysics Parallel

Neutrinos play important roles in revealing mechanisms of energetic astrophysical explosions such as gamma-ray bursts (GRBs) and supernovae (SNe). The large neutrino detector, IceCube has opened a new window of the multi-messenger astronomy. I review theoretical models of high-energy neutrino emissions from gamma-ray bursts, with implications of recent observations and future prospects. I...

61. Atmospheric lepton fluxes at high energies

Prof. Reno, Mary Hall Reno (University of Iowa)

14/05/2013, 15:10

Neutrino Astrophysics Parallel

Theoretical evaluations of the high energy atmospheric neutrino and muon fluxes from cosmic ray interactions with air nuclei rely on calculations of charmed particle production and decay. Presented here is a review of approaches to charm contributions to the atmospheric lepton fluxes, including dipole models and the parton model with QCD.