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Correlation between the UHECRs measured by the Pierre Auger Observatory and Telescope Array and neutrino candidate events from IceCube

par Christov, Asen;Sagawa, Hiroyuki;Tiniakov, Petr ;Golup, Geraldina;Montaruli, Teresa;Rameez, Mohamed;Aublin, Julien;Caccianiga, L.;Ghia, Piera P.L.;Roulet, Esteban;Unger, Michael
Référence EPJ web of conferences, 116, 10004
Publication Publié, 2016-04

Article révisé par les pairs

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Résumé :

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.