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The First Pulse of the Extremely Bright GRB 130427A: A Test Lab for Synchrotron Shocks
University of Alabama in Huntsville, United States.ORCID iD: 0000-0003-3345-9515
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2014 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 343, no 6166, 51-54 p.Article in journal (Refereed) Published
Abstract [en]

Gamma-ray burst (GRB) 130427A is one of the most energetic GRBs ever observed. The initial pulse up to 2.5 seconds is possibly the brightest well-isolated pulse observed to date. A fine time resolution spectral analysis shows power-law decays of the peak energy from the onset of the pulse, consistent with models of internal synchrotron shock pulses. However, a strongly correlated power-law behavior is observed between the luminosity and the spectral peak energy that is inconsistent with curvature effects arising in the relativistic outflow. It is difficult for any of the existing models to account for all of the observed spectral and temporal behaviors simultaneously.

Place, publisher, year, edition, pages
2014. Vol. 343, no 6166, 51-54 p.
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Physical Sciences
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URN: urn:nbn:se:kth:diva-140370DOI: 10.1126/science.1242302ISI: 000329162000044Scopus ID: 2-s2.0-84896700289OAI: oai:DiVA.org:kth-140370DiVA: diva2:690458
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QC 20140123

Available from: 2014-01-23 Created: 2014-01-23 Last updated: 2017-12-06Bibliographically approved

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Burgess, J. MichaelAxelsson, MagnusLarsson, JosefinRyde, Felix

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