A Complex Super-Eddington Burst with Radius Expansion from X2127+119 in M15
Abstract
In 2000 September we observed a bright X-ray burst from X2127+119 with the Rossi X-ray Timing Explorer. This burst has a multi-peaked profile, a peak luminosity of 6.5x1038 erg s-1, a total integrated luminosity of ~2x1040ergs, and significant photospheric radius expansion to a maximum extent of 120 km. The 2000 September event is only the second burst ever observed from this globular cluster binary (in M15 = NGC 7078), and it shares many qualitative and quantitative characteristics with the event detected by Ginga in 1988 October (Dotani et al. 1990; van Paradijs et al. 1990), the key difference probably being the total amount of material consumed in the thermonuclear flash.
- Publication:
-
American Astronomical Society Meeting Abstracts #198
- Pub Date:
- May 2001
- Bibcode:
- 2001AAS...198.1205S