Observations of the X-ray source Cir X-1 on board the space station Salyut 4.
Abstract
Results are reported for observations of the highly variable X-ray source Cir X-1, which were performed on July 5, 1975, with an X-ray telescope aboard the Salyut 4 space station. No X-radiation from the source was observed. Upper limits on the radiation flux in the regions from 0.2 to 2 keV and 2 to 10 keV are determined on the three-sigma level and found to be about 200 times less than the maximum flux detected by the Uhuru satellite.
- Publication:
-
Pisma v Astronomicheskii Zhurnal
- Pub Date:
- June 1976
- Bibcode:
- 1976PAZh....2..284K
- Keywords:
-
- Salyut Space Station;
- Spaceborne Astronomy;
- Variable Stars;
- X Ray Sources;
- Spaceborne Telescopes;
- Time Response;
- Uhuru Satellite;
- Astrophysics