The X-ray light-curve of GRB 080307

Details The X-ray light-curve of GRB 080307 The X-ray light-curve of GRB 080307

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2691p&link_type=abstract

Chandra proposal ID #09508305

Physics

Scientific paper

The canonical X-ray light-curve with a steep-plateau-normal decay, has been attributed to continued energy injection; when this input ceases, we see the steepening to the standard decay (alpha~1.3). In the case of GRB 080307, the onset of the plateau was unusually late and, uniquely, the decay was still continuing with a slope of <1 more than a month after the burst. If intrinsic, this slow decay would place severe constraints on the proposed injection model, requiring the engine to be active for a very long time. Deep Gemini imaging reveals a second optical source within the XRT error circle, which is a possible source of contamination. Chandra's PSF and sensitivity will allow us to test whether there is any contamination from this nearby source and whether the decay has broken.

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