VERITAS Observations of Mkn 501 in 2009

Abstract

VERITAS is the high-sensitivity instrument of latest generation. It is often used for the short AGN monitoring exposures evenly distributed over entire observational season of a source of interest. Each of these exposures is long enough to detect the source at the flux level of about 1 Crab. During the 2009 observing season a number of exposures of Mkn 501 with VERITAS revealed variable TeV gamma-ray emission at the flux level eventually exceeding 2 Crab. The spectral and flux variability measurements in TeV gamma rays for the 2009 data sample of Mkn 501 are summarized in this paper.

arXiv comment2009 Fermi Symposium, eConf Proceedings C091122, 4 pages, 3 figures

References in corpus (1)

• Multiwavelength observations of Mrk 501 in 2008

Cited by in corpus (3)

• Indications for a pair-production anomaly from the propagation of VHE gamma-rays
• Spectral Energy Distribution of Markarian 501: Quiescent State vs. Extreme Outburst
• Rapid variability at very high energies in Mrk 501