A search for Extragalactic Sources of Ultrahigh-Energy Cosmic Rays

Abstract

Possible extragalactic sources of cosmic rays at energies above 4*10^{19} eV detected with the Yakutsk array are sought. Correlation of the shower arrival directions with objects from Veron's catalog that are located closer than 100 Mpc from the Earth confirms the observations at the Pierre Auger observatory, as well as the Greisen-Zatsepin-Kuzmin effect on ultrahigh-energy cosmic rays. The detailed analysis of the data reveals the classes of objects belonging to the active galactic nuclei that are probable sources of ultrahigh-energy cosmic rays.

5 pages, 5 figures

References in corpus (1)

• Correlation of the highest energy cosmic rays with nearby extragalactic objects

Cited by in corpus (7)

• Physical conditions in potential sources of ultra-high-energy cosmic rays: Updated Hillas plot and radiation-loss constraints
• Proton and Neutrino Extragalactic Astronomy
• A doublet of cosmic-ray events with primary energies >10^20 eV
• Exploring arrival directions of UHECRs with the Yakutsk array
• Mass composition of cosmic rays determined by muon fraction with ${\epsilon }_{thr.}\ge$ 1 GeV in air showers with energy greater than 5 EeV
• Ultra-high energy cosmic ray correlations with Active Galactic Nuclei in the world dataset
• Problems in High Energy Astrophysics