Low-energy gamma rays from Cygnus X-1

Details Low-energy gamma rays from Cygnus X-1 Low-energy gamma rays from Cygnus X-1

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....1..193r&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 1 p 193-196 (SEE N85-33902 22-93)

Computer Science

Cygnus Constellation, Energy Spectra, Gamma Ray Spectra, High Energy Electrons, Photon Density, Gamma Ray Telescopes, Spectral Emission, X Rays

Scientific paper

Cyg X-1 was observed by the CESR balloon borne telescope OPALE, in June 1976. The high-energy spectrum of the source, which was in its "superlow state", was seen to extend well beyond 1 MeV. In this paper, the observed low-energy γ-ray component of Cyg X-1 is compared with the predictions of recent models involving accretion onto a stellar black hole, and including a possible contribution from the pair-annihilation 511 keV γ-ray line.

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