A type-I X-ray burst detected by Swift/XRT from the direction of IGR J18245-2452
Abstract
During a Swift/XRT observation starting on 2013-04-07 at 20:32:59, and pointed at the newly discovered X-ray transient IGR J18245-2452 (ATel #4925, #4927, #4929, #4924), located in the globular cluster M28, a burst with rise time of less than 10 s and exponential decay of 38.9+/-0.5 s, was observed by the XRT, while operated in Windowed Timing mode. By fitting the XRT spectrum observed during the peak 6 s of the burst with a 2.5(2) keV blackbody, we measure a 1-10 absorbed flux of 3.2(2)E-8 erg cm^-2 s^-1, corresponding to an unabsorbed X-ray luminosity of 9.6(6)E37 erg/s in the same energy band, for a distance of 5kpc and an absorption column of 0.3(1)E22 cm^-2.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- April 2013
- Bibcode:
- 2013ATel.4959....1P
- Keywords:
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- Binary;
- Neutron Star;
- Transient