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GRB 130427A was the most luminous gamma-ray burst detected in the last 30 years. With an isotropic energy output of 8.5 × 1053 erg and redshift of 0.34, it combined very high energetics with a relative proximity to Earth in an unprecedented way. Sensitive X-ray observatories such as XMM-Newton and Chandra have detected the afterglow of this event for a record-breaking baseline longer than 80 million seconds. The light curve displays a simple power-law over more than three decades in time. In this presentation, we explore the consequences of this result for a few models put forward so far to interpret GRB 130427A, and more in general the implication of this outcome in the context of the standard forward shock model. © 2017 by the authors.
Gamma-ray bursts; X-ray afterglows; GRB modeling
Astrophysics and Astronomy
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This work is licensed under a Creative Commons Attribution 4.0 License.
De Pasquale, M.,
Kann, D. A.,
Oates, S. R.,
Challenging the Forward Shock Model with the 80 Ms Follow Up Of the X-Ray Afterglow of Gamma-Ray Burst 130427A.