A change in light curve asymmetry and the ephemeris of CYG X-3.
Abstract
Cygnus X-3 was observed in the 2-12 keV range for 40 days in May-June 1980. The mean 4.8 h light curve was seen to change significantly in a way suggestive of the existence of an underlying binary with an eclipse duration of 40 percent of the period. The observed time of X-ray minimum was found to increase the level of confidence of a period derivative when compared to the earlier measurements.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 1981
- Bibcode:
- 1981A&A....95L...5V
- Keywords:
-
- Ephemerides;
- Light Curve;
- Stellar Radiation;
- X Ray Sources;
- Binary Stars;
- Cos-B Satellite;
- Spaceborne Astronomy;
- Astronomy