Systematic analysis of X-ray GRB afterglows observed with XMM-Newton and Chandra

B Gendre, L Piro, M DePasquale

Research output: Contribution to journalArticlepeer-review

Abstract

We present a sample of GRB afterglows observed in the X-ray and with XMM-Newton or Chandra, focusing on the brightest events. We have derived for this sample the temporal slope and the spectral index of the continuum, and used closure relationships to discriminate the afterglow environment for each burst. We show that jet features are excluded most of the time, while ISM and wind environments cannot be discriminated. We finally focus on GRB040106, whose environment can be constrained by the X-ray observations only. For this burst.. we present a broad-band analysis and derive some constraints on the positions of characteristic frequencies.

Original languageEnglish
Pages (from-to)509-512
Number of pages4
JournalSocieta Italiana di Fisica. Nuovo Cimento C. Colloquia on Physics
Volume28
Issue number4-5
DOIs
Publication statusPublished - 2005
Externally publishedYes
Event4th Workshop on Gamma-Ray Bursts in the Afterglow Era - Rome, Italy
Duration: 18 Oct 200422 Oct 2004

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