Spectral energy distributions and high-energy emission of BL Lac type objects
Astrophysics
2009-11-13 v2
Abstract
Based on identifications from the Veron and Quasars.org catalogs, we determine the optical-to-X-ray spectral indices for a sample of 201 BL Lac type objects (BLLs) and search for trends in the distribution of these indices of the sources detected in high-energy bands. We find that EGRET-detected sources are low-energy peaked and that the positional correlation with the arrival directions of ultra-high-energy cosmic rays from the previously studied AGASA, Yakutsk and High Resolution Fly's Eye samples is dominated by low-energy-peaked BLLs.
Keywords
Cite
@article{arxiv.0802.0399,
title = {Spectral energy distributions and high-energy emission of BL Lac type objects},
author = {Sergey Troitsky},
journal= {arXiv preprint arXiv:0802.0399},
year = {2009}
}
Comments
v.2: selection effects quantified, discussion of Auger results on BL Lac correlations extended. 5 pages, 4 figures, mn2e.cls style. The definitive version is available at http://www.blackwellsynergy.com