A Late, Infrared Flash from the Afterglow of GRB 050319

We report the detection of a bright, near-infrared flash from the afterglow of gamma-ray burst GRB 050319, 6.15 hr after the burst. The IR flash faded rapidly from J= 13.12 mag to J> 15.5 mag in about 4 minutes. There are no reported simultaneous observations at other wavelengths, thus making it...

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Bibliographic Details
Published in:The Astrophysical journal 2006-03, Vol.640 (1), p.L13-L16
Main Authors: George, Koshy, Banerjee, Dipankar P. K, Chandrasekhar, Thyagarajan, Ashok, Nagarhalli M
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
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Summary:We report the detection of a bright, near-infrared flash from the afterglow of gamma-ray burst GRB 050319, 6.15 hr after the burst. The IR flash faded rapidly from J= 13.12 mag to J> 15.5 mag in about 4 minutes. There are no reported simultaneous observations at other wavelengths, thus making it a unique event. We study the implications of its late timing in the context of current theoretical models for GRB afterglows.
ISSN:1538-4357
0004-637X
1538-4357
DOI:10.1086/503360