Ariel 6 observations of Cyg X-1 in the high state

Ariel 6 observed Cyg X-1 with enhanced low energy emission during June and July 1980. Fluctuations were studied on all time-scales down to 2 ms. Spectral and correlation measurements were consistent with models of Cyg X-1, which involved an accretion disk around a nonrotating black hole with Compton...

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Bibliographic Details
Published in:Space science reviews 1981-03, Vol.30 (1-4), p.369-371
Main Authors: Page, C. G., Bennetts, A. J., Ricketts, M. J.
Format: Article
Language:English
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Summary:Ariel 6 observed Cyg X-1 with enhanced low energy emission during June and July 1980. Fluctuations were studied on all time-scales down to 2 ms. Spectral and correlation measurements were consistent with models of Cyg X-1, which involved an accretion disk around a nonrotating black hole with Compton scattering of photons from a soft central source by hot electron gas producing the medium and high energy X-rays. The cross correlation of rapid fluctuations between two bands above and below 3.5 keV showed a small asymmetry with the high energy emission delay.
ISSN:0038-6308
1572-9672
DOI:10.1007/BF01246048