Evidence for a connection between the gamma-ray and the highest energy cosmic-ray emissions by BL Lacertae objects
Astrophysics
2009-11-07 v2 High Energy Physics - Phenomenology
Abstract
A set of potentially gamma-ray--loud BL Lac objects is selected by intersecting the EGRET and BL Lac catalogs. Of the resulting 14 objects, eight are found to correlate with arrival directions of ultra--high-energy cosmic rays (UHECRs), with significance of the order of 5 sigma. This suggests that gamma-ray emission can be used as a distinctive feature of those BL Lac objects that are capable of producing UHECR.
Cite
@article{arxiv.astro-ph/0204360,
title = {Evidence for a connection between the gamma-ray and the highest energy cosmic-ray emissions by BL Lacertae objects},
author = {D. Gorbunov and P. Tinyakov and I. Tkachev and S. Troitsky},
journal= {arXiv preprint arXiv:astro-ph/0204360},
year = {2009}
}
Comments
11 pages, 1 figure, version published in APJ Letters