EPJ Web of Conferences
Volume 116, 2016Very Large Volume Neutrino Telescope (VLVnT-2015)
|Number of page(s)||6|
|Published online||11 April 2016|
Correlation between the UHECRs measured by the Pierre Auger Observatory and Telescope Array and neutrino candidate events from IceCube
1 Département de physique nucléaire et corpusculaire, Université de Genève, 24 Quai Ernest Ansermet, 1211 Genève, Switzerland
2 Centro Atómico Bariloche, Av. Bustillo 9500, S. C. de Bariloche 8400, Argentina
3 Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, 4 place Jussieu, 75252 Paris, France
4 Karlsruhe Institute of Technology – Campus North – Institut fër Kernphysik, Karlsruhe, Germany and New York University, New York, USA
5 Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba, Japan
6 Service de Physique Théorique, Université Libre de Bruxelles, Boulevard du Triomphe (Campus de la Plaine), Ixelles 1050, Belgium
a e-mail: Mohamed.Rameez@unige.ch
Published online: 11 April 2016
We present the results of three searches for correlations between ultra-high energy cosmic ray events measured by Telescope Array and the Pierre Auger Observatory and high-energy neutrino candidate events from IceCube. Two cross-correlation analyses of ultra-high energy cosmic rays are done: one with 39 “cascades” from the IceCube “high-energy starting events” sample and the other one with 16 high-energy “tracks”. The angular separation between the arrival directions of neutrinos and UHECRs is scanned. The same events are also used in a separate search stacking the neutrino arrival directions and using a maximum likelihood approach. We assume that UHECR magnetic deflections are inversely proportional to the energy with values 3∘, 6∘ and 9∘ at 100 EeV to account for the uncertainties in the magnetic field strength and UHECR charge. A similar analysis is performed on stacked UHECR arrival directions and the IceCube 4-year sample of through-going muon-track events that was optimized for neutrino point source searches.
© Owned by the authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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