Upper Limits from HESS Observations of AGN in 2005-2007
Abstract
Very high energy (VHE; >100 GeV) observations of a sample of selected active galactic nuclei (AGN) were performed between January 2005 and April 2007 with the High Energy Stereoscopic System (HESS), an array of imaging atmospheric-Cherenkov telescopes. Significant detections are reported elsewhere for many of these objects. Here, integral flux upper limits for twelve candidate very high energy (VHE; >100 GeV) gamma-ray emitters are presented. In addition, results from HESS observations of four known VHE-bright AGN are given although no significant signal is measured. For three of these AGN (1ES 1101-232, 1ES 1218+304, and Mkn 501) simultaneous data were taken with the Suzaku X-ray satellite.
Cite
@article{arxiv.0709.4598,
title = {Upper Limits from HESS Observations of AGN in 2005-2007},
author = {HESS Collaboration and W. Benbow and R. Buehler},
journal= {arXiv preprint arXiv:0709.4598},
year = {2007}
}
Comments
4 pages, 3 figures; To appear in the Proceedings of the 30th ICRC (Merida, Mexico)