Decay properties of the X-ray afterglows of gamma-ray bursts

B Gendre, M Boer

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


We present a set of seventeen Gamma-Ray Bursts (GRBs) with known redshifts and X-ray afterglow emission. We apply cosmological corrections in order to compare their fluxes normalized at a redshift of 1. Two classes of GRB can be defined using their X-ray afterglow light curves. We show that the brightest afterglows seem to decay faster than the dimmer ones. We also point out evidence for a possible flux limit of the X-ray afterglow depending on the time elapsed since the burst. We try to interpret these observations in the framework of the canonical fireball model of GRB afterglow emission.

Original languageEnglish
Pages (from-to)465-470
Number of pages6
JournalAstronomy & Astrophysics
Issue number2
Publication statusPublished - Feb 2005
Externally publishedYes


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