High energy gamma-rays from cygnus X-3
Abstract
Simultaneous observations by the ESA satellite COS-B show that the 2-12 keV X-rays and 150-5000 MeV gamma-rays of Cyg X-3 are negatively correlated. A clear gamma-ray image of Cyg X-3 can be obtained between June 1977 and June 1980, when the X-ray emission was low, to yield a flux of P(E > 100MeV) ~ 1 × 10 -6cm -2s -1.
- Publication:
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Chinese Astronomy and Astrophysics
- Pub Date:
- December 1989
- DOI:
- 10.1016/0275-1062(89)90036-2
- Bibcode:
- 1989ChA&A..13..383L
- Keywords:
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- Gamma ray sources -- X-ray binaries