SMM/HXRBS observations of Cygnus X-1 from 1986 December to 1988 April

Details SMM/HXRBS observations of Cygnus X-1 from 1986 December to 1988 April SMM/HXRBS observations of Cygnus X-1 from 1986 December to 1988 April

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...376..312s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 376, July 20, 1991, p. 312-321.

Astronomy and Astrophysics

Astronomy

11

Solar Maximum Mission, Stellar Spectra, X Ray Astronomy, X Ray Binaries, X Ray Spectra, Light Curve, Satellite-Borne Instruments, Spaceborne Astronomy, Spectrum Analysis

Scientific paper

The Solar Maximum Mission's Hard X-ray Burst Spectrometer made 30 measurements of Cygnus X-1 from December, 1986 to April, 1988, yielding a data set of broad synoptic coverage but limited duration for each data point. The hard X-ray intensity was found to be between the gamma(2) and gamma(3) levels, with a range of fluctuations about the average intensity level. The shape of the photon spectrum was found to be closest to that reported by Ling et al. (1983, 1987) during the time of the gamma(3) level emission, although the spectral shapes reported for the gamma(2) and gamma(1) levels were not precluded.

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