The X-ray ephemeris of Cygnus X-3.
Abstract
A set of 17 measurements of the arrival time of the 4.8-hr period of the X-ray binary Cygnus X-3 over an interval of 2.3 yr are derived from Exosat data. These measurements are combined with previous data to study the period of Cygnus X-3 for the period 1970-1985. A cubic ephemeris with a 99.9 percent confidence fit to the data is presented with an average period derivative of -1.6 + or - 0.4 X 10 to the -10th/yr.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- April 1989
- Bibcode:
- 1989A&A...214..203V
- Keywords:
-
- Ephemeris Time;
- Light Curve;
- X Ray Binaries;
- Apsides;
- Cygnus Constellation;
- Exosat Satellite;
- Stellar Orbits;
- Astrophysics