20.500.12556/RUNG-5194-9ffcf94e-ad8c-27fc-cf8b-82ab8c757176
Search for correlations between the arrival directions of IceCube neutrino events and ultrahigh-energy cosmic rays detected by the Pierre Auger Observatory and the Telescope Array
This paper presents the results of different searches for correlations between very high-energy neutrino candidates detected by IceCube and the highest-energy cosmic rays measured by the Pierre Auger Observatory and the Telescope Array. We first consider samples of cascade neutrino events and of high-energy neutrino-induced muon tracks, which provided evidence for a neutrino flux of astrophysical origin, and study their cross-correlation with the ultrahigh-energy cosmic ray (UHECR) samples as a function of angular separation. We also study their possible directional correlations using a likelihood method stacking the neutrino arrival directions and adopting different assumptions on the size of the UHECR magnetic deflections. Finally, we perform another likelihood analysis stacking the UHECR directions and using a sample of through-going muon tracks optimized for neutrino point-source searches with sub-degree angular resolution. No indications of correlations at discovery level are obtained for any of the searches performed. The smallest of the p-values comes from the search for correlation between UHECRs with IceCube high-energy cascades, a result that should continue to be monitored.
UHECR
cosmic rays
neutrinos
multi-messenger physics
anisotropy
true
true
false
Angleški jezik
Ni določen
Delo ni kategorizirano
2020-04-29 23:37:27
2020-04-30 08:42:10
2023-06-09 03:37:03
0000-00-00 00:00:00
2016
0
0
35
2016
1
2016
0000-00-00
Zaloznikova
NiDoloceno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
4124923
10.1088/1475-7516/2016/01/037
URN:SI:UNG:REP:4GXWP3OQ
Univerza v Novi Gorici
0
1
0