Far UV observations of black hole candidates : the case of LMC X-3.
Abstract
Stellar mass black hole candidates observed in the far UV are reported. All of them, except SS 433, which is heavily reddened, were detected in the far UV; A0620-00, was observed with the ANS satellite during X-ray flaring. For Cyg X-1, LMC X-1, LMC X-3 the data derive from 10 yr of IUE observations. Observations of 2 sources which have a massive non collapsed component, namely Cyg X-1 and LMC X-1 are reviewed, and A0620-00 and LMC X-3, whose visible component is much less luminous are discussed. The latter object is emphasized, because of its nontransient nature, and the important role of UV observations in clarifying the nature of the accretion disk around the hole. The UV observations yield information of the accretion onto black hole mainly because the UV radiation is produced by the interaction of the X-rays with the accretion material. As from variability studies, the dynamics of the accretion process can be reconstructed. Simultaneous monitoring at UV, optical, and X-ray frequencies is of the utmost importance.
- Publication:
-
ESA Special Publication
- Pub Date:
- June 1988
- Bibcode:
- 1988ESASP.281a.127T
- Keywords:
-
- Black Holes (Astronomy);
- Iue;
- Magellanic Clouds;
- Spaceborne Astronomy;
- Ultraviolet Astronomy;
- Accretion Disks;
- Far Ultraviolet Radiation;
- X Rays;
- Astronomy;
- BLACK HOLES (ASTRONOMY);
- IUE;
- MAGELLANIC CLOUDS;
- SPACEBORNE ASTRONOMY;
- ULTRAVIOLET ASTRONOMY;
- ACCRETION DISKS;
- FAR ULTRAVIOLET RADIATION;
- X RAYS