The long-term X-ray lightcurve of RX J0527.8-6954.
Abstract
Supersoft X-ray sources are commonly believed to be stably burning white dwarfs. However, the observations of some supersoft sources show dramatic variability of their X-ray flux on timescales ranging from days to years. Here, we present further observational data of the supersoft X-ray source RX J0527.8-6954 exhibiting a continuous decline over the past 5yrs. With no clear trend of a concordant temperature decrease this might suggest a evolutionary scenario where the WD leaves the steady burning branch and the combined effect of reduced luminosity and cooling at constant radius produces the observed effect.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- August 1996
- Bibcode:
- 1996A&A...312...88G
- Keywords:
-
- WHITE DWARFS;
- STARS: RX J0527.8-6954;
- X-RAYS: STARS