Other
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1000..212g&link_type=abstract
GAMMA-RAY BURSTS 2007: Proceedings of the Santa Fe Conference. AIP Conference Proceedings, Volume 1000, pp. 212-215 (2008).
Other
Gamma-Ray Sources, Gamma-Ray Bursts, Time Series Analysis, Time Variability, Astronomical And Space-Research Instrumentation
Scientific paper
Conflicting results from optical measurements on one hand and recent Swift X-ray observations on the other challenge the prediction from the standard `fireball' model of GRBs that jet opening angles can be determined from the light curve's break time: While optical and radio light curves suggest early break times after a few days and therefore small opening angles, Swift XRT observations show no jet breaks in the majority of light curves, even weeks or months after the burst. The most extreme example of such an X-ray afterglow is GRB 060729 which was still detected by the Swift XRT 125 days after the burst without any clear sign of a jet break. The X-ray afterglow was observed three time between 2007 March to June by Chandra and in all three observations the X-ray afterglow is clearly detected. With a detection 330 days after the burst this is currently the record of the latest detection of an X-ray afterglow ever.
Burrows David
Garmire Gordon
Gronwall Caryl
Grupe Dirk
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