On the Anisotropy of E0 >= 5.5$\times$1019 eV Cosmic Rays according to Data of the Pierre Auger Collaboration

TL;DR

This paper analyzes the anisotropy in ultra-high-energy cosmic rays (E0 ≥ 5.5×10^19 eV) detected by the Pierre Auger Observatory, highlighting potential correlations with nearby radio galaxies and large-scale structures.

Contribution

It presents observational evidence of anisotropy in cosmic ray arrival directions and discusses possible associations with local extragalactic structures.

Findings

Identification of a local cosmic ray excess near the Gen A radio galaxy

Correlation of cosmic ray directions with the Centaur supercluster

Potential influence of the Great Attractor on cosmic ray distribution

Abstract

The Pierre Auger Collaboration discovered, in a solid angle of radius about 18\degree, a local group of cosmic rays having energies in the region E0 \geq 5.5\times1019 eV and coming from the region of the Gen A radio galaxy, whose galactic coordinates are lG = 309.5\degree and bG = 19.4\degree. Near it, there is the Centaur supercluster of galaxies, its galactic coordinates being lG = 302.4\degree and bG = 21.6\degree. It is noteworthy that the Great Attractor, which may have a direct bearing on the observed picture, is also there.