Swift XRT observations of X-ray flares in GRB afterglows

David N. Burrows, P. Romano, O. Godet, A. Falcone, C. Pagani, G. Cusumano, S. Campana, G. Chincarini, J. E. Hill, P. Giommi, M. R. Goad, J. A. Kennea, S. Kobayashi, P. Mészáros, J. A. Nousek, J. P. Osborne, P. T. O'Brien, K. L. Page, G. Tagliaferri, B. Zhang

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

1 Scopus citations


The Swift XRT has been observing GRB afterglows since December 23, 2004. Three-quarters of these observations begin within 200 s of the burst onset, providing an unprecendented look at the behavior of X-ray emission from GRB afterglows in the first few hours after the burst. While most of the early afterglows have smoothly declining lightcurves, a substantial fraction has large X-ray flares on short time-scales. We suggest that these flares provide support for models with extended central engine activity producing late-time internal shocks.

Original languageEnglish (US)
Title of host publicationX-ray Universe 2005
Number of pages7
StatePublished - 2006
EventX-ray Universe 2005 - Madrid, Spain
Duration: Sep 26 2005Sep 30 2005

Publication series

NameEuropean Space Agency, (Special Publication) ESA SP
ISSN (Print)0379-6566


OtherX-ray Universe 2005

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science


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