GRB 130427A afterglow: a test for GRB models

Journal
Date Issued
2017
Author(s)
De Pasquale, M.
•
Page, M. J.
•
Kann, D. A.
•
Oates, S. R.
•
Schulze, S.
•
Zhang, B.
•
Cano, Z.
•
Gendre, B.
•
Malesani, D.
•
•
Gehrels, N.
•
Troja, E.
•
•
Boër, M.
•
DOI
Abstract
Gamma-ray Burst 130427A had the largest fluence for almost 30 years. With an isotropic energy output of 8.5 ×1053 erg and redshift of 0.34, it combined a very high energy release with a relative proximity to Earth in an unprecedented fashion. Sensitive X-ray facilities such as XMM-Newton and Chandra detected the afterglow of this event for a record-breaking baseline of 90 Ms. We show the X-ray light curve of GRB 130427A of this event over such an interval. The light curve shows an unbroken power law decay with a slope of α = 1.31 over more than three decades in time. In this presentation, we investigate the consequences of this result for the scenarios proposed to interpret GRB 130427A and the implications in the context of the forward shock model (jet opening angle, energetics, surrounding medium). We also remark the chance of extending GRB afterglow observations for several hundreds of Ms with Athena.
Coverage
XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop (MULTIF2017)
Volume
306
Start page
71
Conferenece
XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop
Conferenece place
Palermo, Italy
Conferenece date
12-17 June, 2017
Uri
Url
Issn Identifier
1824-8039
Ads BibCode
2017mbhe.confE..71D
Rights
open.access
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