Detection of Vhe Gamma-Rays from MRK 501 with the Cat Imaging Telescope
A. Barrau, R. Bazer-Bachi, H. Cabot, L. M. Chounet, G. Debiais, B. Degrange, J. P. Dezalay, A. Djannati-Atai, D. Dumora, P. Espigat, B. Fabre, P. Fleury, G. Fontaine, R. George, C. Ghesquiere, P. Goret, C. Gouiffes, I. A. Grenier, L. Iacoucci, S. Le Bohec, I. Mallet, C. Meynadier, F. Munz, T. A. Palfrey, E. Pare, Y. Pons, M. Punch, J. Quebert, K. Ragan, C. Renault, M. Rivoal, L. Rob, P. Schovanek, D. Smith, J. P. Tavernet, J. Vrana
Abstract
The CAT imaging telescope on the site on the former solar plant Themis has been observing gamma-rays from Mrk501 above 220 GeV in March and April 1997. This source is shown to be highly variable and the light curve is presented. The detected gamma-ray rate for the most intense flare is in excess of 10 per minute.
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