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

Details Ariel 6 observations of CYG X-1 in the high state Ariel 6 observations of CYG X-1 in the high state

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ssrv...30..369p&link_type=abstract

(European Space Agency, ESLAB Symposium on X-ray Astronomy, 15th, Amsterdam, Netherlands, June 22-26, 1981.) Space Science Revie

Astronomy and Astrophysics

Astronomy

8

Ariel Satellites, Cygnus Constellation, Emission Spectra, Energy Spectra, Periodic Variations, X Ray Sources, Autocorrelation, Black Holes (Astronomy), Compton Effect, Cross Correlation, High Resolution, Stellar Mass Accretion, Stellar Models, Temporal Resolution

Scientific paper

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.

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