X-ray studies of the pulsar Hercules X-1 from the Astron space station
Abstract
The X-ray pulsar Hercules X-1 was observed by the Astron space station during 1983-1987. In 1983 the pulsar was in the extended 'low' state, and its spectrum was similar to that in the 'off' state. Data on Hercules X-1 period changes in the 'high on' state are obtained. The possibility of accounting for the main pulse profile variations by a shadowing of the generation region due to disk precession is discussed.
- Publication:
-
Astronomicheskii Zhurnal
- Pub Date:
- February 1992
- Bibcode:
- 1992AZh....69...82S
- Keywords:
-
- Light Curve;
- Neutron Stars;
- Pulse Duration;
- Spaceborne Astronomy;
- X Ray Binaries;
- Exosat Satellite;
- Space Station Payloads;
- Stellar Spectra;
- Astrophysics