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arXiv · 1104.5496

Detection of High-Energy Gamma-Ray Emission during the X-ray flaring activity in GRB100728A

The Fermi Collaboration·L. Piro
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Abstract

We present the simultaneous Swift and Fermi observations of the bright GRB100728A and its afterglow. The early X-ray emission is dominated by a vigorous flaring activity continuing until 1 ks after the burst. In the same time interval high energy emission is significantly detected by the Fermi/LAT. Marginal evidence of GeV emission is observed up to later times. We discuss the broadband properties of this burst within both the internal and external shock scenarios, with a particular emphasis on the relation between X-ray flares, the GeV emission and a continued long-duration central engine activity as their power source.

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The Fermi Collaboration, L. Piro. 2011-04-28. Detection of High-Energy Gamma-Ray Emission during the X-ray flaring activity in GRB100728A. https://doi.org/10.1088/2041-8205%2F734%2F2%2Fl27

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