The Swift X-ray flaring afterglow of GRB 050607

Claudio Pagani, David C. Morris, Shiho Kobayashi, Takanori Sakamoto, Abraham D. Falcone, Alberto Moretti, Kim Page, David N. Burrows, Dirk Grupe, Judith Racusin, Jamie A. Kennea, Sergio Campana, Patrizia Romano, Gianpiero Tagliaferri, Jamie A. Kennea, Joanne E. Hill, Lorella Angelini, Scott Barthelmy, Guido Chincarini, John A. NousekNeil Gehrels

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


The fast and autonomous response of the Swift satellite to newly detected Gamma-Ray Bursts (GRBs) has provided a new view on their X-ray and optical afterglows. We present here the X-ray Telescope observations of GRB 050607. The striking feature of the X-ray emission is the intense flaring activity during the early afterglow phase, indicative of central engine activity extended to several hundred seconds after the burst detection. The flares have very rapid timing variations and asymmetric shapes, similar to the FREDs that are frequently observed in the prompt GRB emission. After the flares, the X-ray lightcurve entered a phase of slow decay during which the forward shocks were probably being refreshed, followed by a late steepening consistent with the standard external shock model. Analysis of the X-ray emission showed spectral variations during the flares, with a harder spectrum at the flares onset and a softer component that lingered longer, as each flare decayed.

Original languageEnglish (US)
Title of host publicationGAMMA-RAY BURSTS IN THE SWIFT ERA
Subtitle of host publicationSixteenth Maryland Astrophysics Conference
Number of pages4
StatePublished - May 19 2006
EventGAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference - Washington, D.C., United States
Duration: Nov 29 2005Dec 2 2005

Publication series

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


OtherGAMMA-RAY BURSTS IN THE SWIFT ERA: 16th Maryland Astrophysics Conference
Country/TerritoryUnited States
CityWashington, D.C.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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