The late X-ray afterglow of gamma-ray bursts

We have developed a functional fit which can be used to represent the entire temporal decay of the X-ray afterglow of gamma-ray bursts (GRBs). The fit delineates and parameterizes well-defined phases for the decay: the prompt emission; an initial steep decay; a shallow plateau phase; and finally, a...

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Bibliographic Details
Published in:Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences physical, and engineering sciences, 2007-05, Vol.365 (1854), p.1189-1195
Main Authors: Willingale, Richard, O'Brien, Paul T
Format: Article
Language:English
Subjects:
Afterglow
Astronomical objects
Black Holes
Collimation
Fireballs
Gamma ray bursts
Ionization afterglow
Light curves
Modeling
Red shift
Spectral index
X ray spectrum
X-Ray
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Summary:We have developed a functional fit which can be used to represent the entire temporal decay of the X-ray afterglow of gamma-ray bursts (GRBs). The fit delineates and parameterizes well-defined phases for the decay: the prompt emission; an initial steep decay; a shallow plateau phase; and finally, a powerlaw afterglow. For 20% of GRBs, the plateau phase is weak, or not seen, and the initial powerlaw decay becomes the final afterglow.
ISSN:1364-503X
1471-2962
DOI:10.1098/rsta.2006.1996