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Fermi-LAT Observations of the Gamma-Ray Burst GRB 130427A
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2014 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 343, no 6166, 42-47 p.Article in journal (Refereed) Published
Abstract [en]

The observations of the exceptionally bright gamma-ray burst (GRB) 130427A by the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope provide constraints on the nature of these unique astrophysical sources. GRB 130427A had the largest fluence, highest-energy photon (95 GeV), longest gamma-ray duration (20 hours), and one of the largest isotropic energy releases ever observed from a GRB. Temporal and spectral analyses of GRB 130427A challenge the widely accepted model that the nonthermal high-energy emission in the afterglow phase of GRBs is synchrotron emission radiated by electrons accelerated at an external shock.

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2014. Vol. 343, no 6166, 42-47 p.
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Physical Sciences
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URN: urn:nbn:se:su:diva-100091DOI: 10.1126/science.1242353ISI: 000329162000042OAI: oai:DiVA.org:su-100091DiVA: diva2:692624
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AuthorCount:182;

Available from: 2014-01-31 Created: 2014-01-27 Last updated: 2017-12-06Bibliographically approved

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Axelsson, MagnusConrad, JanLarsson, Stefan
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Department of AstronomyThe Oskar Klein Centre for Cosmo Particle Physics (OKC)Department of Physics
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