Nuclear surface burning stability of the galactic supersoft X-ray binary QR And
Abstract
We propose to probe theoretical scenarios on the stability of the nuclear surface burning on high mass-rate accreting white dwarfs by a long-term study of the brightest supersoft X-ray binary, QR And. Repeating XMM-Newton observations more than one decade after the last source coverage will provide a sufficiently long baseline for this sort of studies and will yield important information on the nature of the source variability. Long-term soft X-ray variability of QR And has been indicated by a monitoring with ROSAT. But only XMM-Newton will be sensitive enough to allow us to characterize the variations and to compare the parameters derived with predictions from numerical calculations. Repeated observations will also help to clarify the origin of short-term variability.
- Publication:
-
XMM-Newton Proposal
- Pub Date:
- October 2013
- Bibcode:
- 2013xmm..prop..135R
- Keywords:
-
- White Dwarf Binaries;
- Neutron Star Binaries;
- Cataclysmic Variables;
- ULXs;
- Black Holes;
- QR And;
- QR And