Abstract
view Abstract Citations (12) References (26) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS SMM/HXRBS Observations of Cygnus X-1 from 1986 December to 1988 April Schwartz, R. A. ; Orwig, L. E. ; Dennis, B. R. ; Ling, J. C. ; Wheaton, W. A. Abstract 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. Publication: The Astrophysical Journal Pub Date: July 1991 DOI: 10.1086/170281 Bibcode: 1991ApJ...376..312S Keywords: Solar Maximum Mission; Stellar Spectra; X Ray Astronomy; X Ray Binaries; X Ray Spectra; Light Curve; Satellite-Borne Instruments; Spaceborne Astronomy; Spectrum Analysis; Astrophysics; STARS: INDIVIDUAL CONSTELLATION NAME: CYGNUS X-1; X-RAYS: BINARIES; X-RAYS: SPECTRA full text sources ADS | data products SIMBAD (1)
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