RT Journal Article
T1 Search for Spatial Correlations of Neutrinos with Ultra-high-energy Cosmic Rays
A1 Albert, A.
A1 Parente Bermúdez, Gonzalo
A1 Zundel, Z.
K1 Neutrino astronomy
K1 High energy astrophysics
K1 Ultra-high-energy cosmic radiation
AB For several decades, the origin of ultra-high-energy cosmic rays (UHECRs) has been an unsolved question of high-energy astrophysics. One approach for solving this puzzle is to correlate UHECRs with high-energy neutrinos, since neutrinos are a direct probe of hadronic interactions of cosmic rays and are not deflected by magnetic fields. In this paper, we present three different approaches for correlating the arrival directions of neutrinos with the arrival directions of UHECRs. The neutrino data are provided by the IceCube Neutrino Observatory and ANTARES, while the UHECR data with energies above ∼50 EeV are provided by the Pierre Auger Observatory and the Telescope Array. All experiments provide increased statistics and improved reconstructions with respect to our previous results reported in 2015. The first analysis uses a high-statistics neutrino sample optimized for point-source searches to search for excesses of neutrino clustering in the vicinity of UHECR directions. The second analysis searches for an excess of UHECRs in the direction of the highest-energy neutrinos. The third analysis searches for an excess of pairs of UHECRs and highest-energy neutrinos on different angular scales. None of the analyses have found a significant excess, and previously reported overfluctuations are reduced in significance. Based on these results, we further constrain the neutrino flux spatially correlated with UHECRs.
PB American Astronomical Society
SN 0004-637X
YR 2022
FD 2022-08-03
LK http://hdl.handle.net/10347/32683
UL http://hdl.handle.net/10347/32683
LA eng
NO Albert, A., Parente Bermúdez, G., Zundel, Z. (2022). Search for Spatial Correlations of Neutrinos with Ultra-high-energy Cosmic Rays, ApJ 934 164
DS Minerva
RD 30 abr 2026