Exploring arrival directions of UHECRs with the Yakutsk array

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.

Presented at CRIS 2008, September 15-18, Malfa, Italy

References in corpus (2)

• Correlation of the highest energy cosmic rays with nearby extragalactic objects
• A search for Extragalactic Sources of Ultrahigh-Energy Cosmic Rays

Cited by in corpus (6)

• A minimal width of the arrival direction distribution of ultra-high energy cosmic rays detected with the Yakutsk array
• Large-scale distribution of cosmic rays in right ascension as observed by the Yakutsk array at energies above $10^{18}$ eV
• Zenith angle distribution of cosmic ray showers measured with the Yakutsk array and its application to analysis of arrival directions in equatorial coordinates
• A Bayesian analysis of the 69 highest energy cosmic rays detected by the Pierre Auger Observatory
• Testing for uniformity of Ultra-High Energy Cosmic Ray arrival directions
• A Bayesian self-clustering analysis of the highest energy cosmic rays detected by the Pierre Auger Observatory