The early and late-time light curve the extraordinary GRB 060729

Dirk Grupe, Caryl Gronwall, David Burrows, Gordon Garmire

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish (US)
Title of host publicationGamma-Ray Bursts 2007 - Proceedings of the Santa Fe Conference
Number of pages4
StatePublished - 2008
EventSanta Fe Conference on Gamma-Ray Bursts 2007, GRB 2007 - Santa Fe, NM, United States
Duration: Nov 5 2007Nov 9 2007

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


OtherSanta Fe Conference on Gamma-Ray Bursts 2007, GRB 2007
Country/TerritoryUnited States
CitySanta Fe, NM

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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