Spectroscopy of a bright thermonuclear bursts from SAX J1808.4-3658
Abstract
Our goal is to measure with EPIC-pn and RGS for the first time a bright thermonuclear X-ray burst with photospheric radius expansion (PRE), search for signatures of the ashes of nuclear burning and, if succesful, attempt constraining the gravitational redshift. The target, SAX J1808.4-3658, is a low-mass X-ray binary whose bursts are known to be consistently very bright, show PRE and be fairly predictable in occurrence. This is a request for a TOO within the first 7 days of a transient outburst, for 80 ks, to detect at least 2 bursts. We estimate a trigger probability of 10% or less.
- Publication:
-
XMM-Newton Proposal
- Pub Date:
- October 2011
- Bibcode:
- 2011xmm..prop..163I
- Keywords:
-
- White Dwarf Binaries;
- Neutron Star Binaries;
- Cataclysmic Variables;
- ULXs;
- Black Holes;
- SAX J1808.4-365