BL Lac: A New Ultrahigh-Energy Gamma-Ray Source
Astrophysics
2009-11-07 v1
Abstract
The active galactic nucleus BL Lac was observed with the Gt-48 atmospheric Cherenkov detector of the Crimean Astrophysical Observatory from July 23-September 1, 1998, in order to search for ultrahigh-energy gamma-ray (>1 TeV) emission. The object was in the field of view of the detector for more than 24 hours. The source was detected with a high level of confidence (7.2 sigma), with a flux equal to (2.1+/-0.4)x10^{-11} photons cm^{-2}s^{-1}.
Keywords
Cite
@article{arxiv.astro-ph/0111448,
title = {BL Lac: A New Ultrahigh-Energy Gamma-Ray Source},
author = {Yu. I. Neshpor and N. N. Chalenko and A. A. Stepanian and O. R. Kalekin and N. A. Jogolev and V. P. Fomin and V. G. Shitov},
journal= {arXiv preprint arXiv:astro-ph/0111448},
year = {2009}
}
Comments
7 pages, 4 figures