Extreme Properties of GRB 061007: A highly energetic or a highly collimated burst?

P. Schady, M. De Pasquale, M. J. Page, L. Vetere, M. J. Page, X. Y. Wang, J. Cummings, B. Zhang, S. Zane, A. Breeveld, D. N. Burrows, N. Gehrels, C. Gronwall, S. Hunsberger, C. Markwardt, K. O. Mason, P. Mészáros, J. P. Norris, S. R. Oates, C. PaganiT. S. Poole, P. W.A. Roming, P. J. Smith, D. E. Vanden Berk

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

4 Scopus citations


GRB 061007 had the brightest optical afterglow observed by UVOT so far and a highly unusual afterglow light curve. It had an usually smooth and steep panchromatic temporal decay, which, from the start of the Swift observations, decayed as a power with a slope of α=1.65±0.02 in the X-ray and UV/optical bands. If we interpret the data in terms of a spherical blastwave, the energy budget that is implied is enormous, challenging the possible models for the progenitors. The alternative explanation is that with GRB 061007 we are witnessing the most collimated outflow ever observed. If this is correct, if implies the occurrence of a jet break within 80 s of the prompt emission. This event has therefore remarkable consequences for the GRB communicate, since it may imply that jet breaks can occur much earlier in the afterglow light curves than hitherto expected.

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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