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Very high energy gamma-quanta 1-65 TeV from the Cygnus X-3 binary
Sinitsyna V.G., Arsov T.P., Alaverdian A.Y., Borisov S.S., Musin F.I. et al
Dans Nuclear Physics B Proceedings Supplements - 13th International Symposium on Very High-Energy Cosmic Ray Interactions, Pylos : Grèce - http://hal.in2p3.fr/in2p3-00025668
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique
Very high energy gamma-quanta 1–65 TeV from the Cygnus X-3 binary
V.G. Sinitsyna, T.P. Arsov, A.Y. Alaverdian, S.S. Borisov, F.I. Musin, R.M. Mirzafatikov, S.I. Nikolsky, V.Y. Sinitsyna, G.F. Platonov, J.-N. Capdevielle1, 2
1 :  PCC - Physique Corpusculaire et Cosmologie - Collège de France
CNRS : UMR7553 – IN2P3 – Université Paris VII - Paris Diderot
11, place Marcelin Berthelot - 75231 Paris Cedex 05
France
2 :  APC - UMR 7164 - AstroParticule et Cosmologie
http://www.apc.univ-paris7.fr/
CNRS : UMR7164 – IN2P3 – Observatoire de Paris – Université Paris VII - Paris Diderot – CEA : DSM/IRFU
APC - UMR 7164, Université Paris Diderot, 10 rue Alice Domon et Léonie Duquet, case postale 7020, F-75205 Paris Cedex 13
France
The results of almost ten-year observation of Cygnus X-3 point source by SHALON mirror Cherenkov telescope are presented. The galactic source Cygnus X-3, known for more than 10 years as a source with variable intensity < 10−11 − 5 • 10−12cm−2s−1, was regularly observed since 1995 with average gamma-quantum flux F(EO > 0.8TeV ) = (6.8 ± 0.7) • 10−13cm−2s−1. The flux in 2003 was (1.79 ± 0.33) • 10−12cm−2s−1. Earlier, in 1997, an increase in the flux was also observed (1.2 ± 0.5) • 10−12cm−2s−1. The limits on gamma-rays from Cygnus X-3, the source that results stimulated the construction of many new detectors are presented. These upper limits and SHALON fluxes are now more than a factor 100 less than the fluxes originally reported.

Communications avec actes
2006
Nuclear Physics B Proceedings Supplements
151, Issue 1
489-492

13th International Symposium on Very High-Energy Cosmic Ray Interactions
Pylos
Grèce
06/09/2004
12/09/2004

APC-PCC 04 116/conf