EXOSAT observations of the X-ray burst source 4U 1608-52.
Abstract
The results of an analysis of two Exosat observations (July 1984, May 1986) of the highly variable X-ray burst source 4U 1608-52 are presented. During both observations the persistent X-ray flux was low (quiescence), and the persistent X-ray spectrum could be well fitted with a power-law model, with approximately the same index, but a somewhat different low-energy cut off. During both observations one type 1 burst was seen. It is shown that the relation between color temperature and effective temperature differs markedly from simple relations derived from theoretical models. A dip in the bolometric flux occurred near the peak of the 1986 burst. Possible models for this dip are discussed.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- January 1989
- Bibcode:
- 1989A&A...208..146P
- Keywords:
-
- Exosat Satellite;
- Gamma Ray Bursts;
- Spectrum Analysis;
- Stellar Spectra;
- X Ray Binaries;
- Black Body Radiation;
- Brightness Temperature;
- Neutron Stars;
- Power Spectra;
- Stellar Models;
- Astrophysics