Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2011-10-10
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Proceedings of Rencontres de Blois 2011
Scientific paper
Between May 2009 and May 2010, the IceCube neutrino detector recorded 32 billion of atmospheric muons generated in air showers produced by cosmic rays in the TeV energy range. With such high statistics sample it is possible to observe, for the first time in the southern hemisphere, an energy dependence in the Galactic cosmic ray anisotropy up to a few hundred TeV. This study shows that the same large-scale anisotropy observed at median energies around 20 TeV is not present at 400 TeV; the anisotropy observed at 400 TeV shows substantial differences with respect to that at lower energy. In addition to the large-scale features observed at 20 TeV in the form of strong dipole and quadrupole moments, the data include several localized regions of excess and deficit on scales between 10{\degree} to 30{\degree}. The features observed at both large and small scale are statistically significant, but their origin is currently unknown.
for the IceCube Collaboration
Toscano Simona
No associations
LandOfFree
Observation of Anisotropy in the Arrival Direction Distribution of Cosmic Rays above TeV Energies with Icecube does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observation of Anisotropy in the Arrival Direction Distribution of Cosmic Rays above TeV Energies with Icecube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of Anisotropy in the Arrival Direction Distribution of Cosmic Rays above TeV Energies with Icecube will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-147479