Exploring arrival directions of UHECRs with the Yakutsk array
A.A. Ivanov
TL;DR
This paper analyzes the arrival directions of ultra-high energy cosmic rays detected by the Yakutsk array to investigate potential correlations with astrophysical sources, addressing conflicting findings from other major cosmic ray observatories.
Contribution
It provides a detailed analysis of UHECR arrival directions from Yakutsk data, contributing to the ongoing debate on extragalactic source correlations.
Findings
No significant correlation with nearby AGN found in Yakutsk data
Highlights discrepancies between different cosmic ray observatories
Emphasizes need for further data and analysis
Abstract
The data on arrival directions of ultra-high energy cosmic rays (UHECRs) detected with the Yakutsk array are analyzed. The work is induced by the recent claim of the Pierre Auger collaboration for the significant correlation found between UHECRs and positions of nearby Active Galactic Nuclei (AGN) on the celestial sphere; and no correlation the HiRes collaboration stands for. Conflicting data of four giant arrays concern possible extragalactic sources of UHECRs and appeal to the profound analysis and to the future data from the Telescope Array/Northern Auger Observatory.
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