ARIEL-6 Observations of CYGNUS-X-1 in the High State
Abstract
Whereas nearly all previous observations of Cyg X-1 with good time resolution have been made when the source was in its low emission state, Ariel-6 has been fortunate to observe it during 1980 June July mainly in its high state, i.e. with enhanced low energy emission. The fluctuations were studied on all time-scales down to 2 ms and appeared similar to those previously reported for the low state. The cross-correlation of rapid fluctuations between two bands above and below 3.5 keV however showed a small but significant asymmetry with the high energy emission delayed.
- Publication:
-
Space Science Reviews
- Pub Date:
- March 1981
- DOI:
- 10.1007/BF01246048
- Bibcode:
- 1981SSRv...30..369P
- Keywords:
-
- 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;
- Astrophysics