AAS 198th Meeting, June 2001
Session 12. Neutron Stars, White Dwarfs
Display, Monday, June 4, 2001, 9:20am-6:30pm, Exhibit Hall

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[12.05] A Complex Super-Eddington Burst with Radius Expansion from X2127+119 in M15


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.

The author(s) of this abstract have provided an email address for comments about the abstract: alan@osiris.gsfc.nasa.gov

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