Recent Swift Results on GRB Afterglows

Details Recent Swift Results on GRB Afterglows Recent Swift Results on GRB Afterglows

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sgrb.confe..10b&link_type=abstract

Presented at the KITP Conference: Supernova and Gamma-Ray Burst Remnants, Feb 7, 2006, Kavli Institute for Theoretical Physics,

Physics

Scientific paper

NASA's Swift Gamma-Ray Burst Explorer is designed to localize and studyGamma-Ray Bursts (GRBs) and their afterglows, beginning within a fewminutes of the burst events. Swift has now discovered over 100 GRBs andhas produced detailed X-ray light curves and spectroscopy on over 90% ofthese, exceeding in the first nine months the total sample of GRBafterglows found in the previous 8 years. Key findings to date includerapid decays at early times and giant X-ray flares, suggesting that thecentral engines of GRBs continue long past the end of the prompt gamma-rayemission. We have also localized several short GRBs, providing importantsupporting evidence for compact merger theories for short bursts, butyielding puzzling afterglows with flares that suggest somewhat complexmerger processes. I will discuss what these observations may be telling usabout black hole creation associated with GRBs.

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