Document Type
Conference Proceeding
Publication Date
2-1-2018
Publication Title
Proceedings of Science
First page number:
1
Last page number:
8
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 {\it XMM-Newton} and {\it 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 {\it Athena}.
Keywords
Cosmology; Fighter aircraft; X-rays
Disciplines
Astrophysics and Astronomy
File Format
application/pdf
File Size
681 Kb
Language
English
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Repository Citation
De Pasquale, M.,
Page, M. J.,
Kann, D. A.,
Oates, S. R.,
Schulze, S.,
Zhang, B.,
Cano, Z.,
Gendre, B.,
Malesani, D.,
Rossi, A.,
Gehrels, N.,
Troja, E.,
Piro, L.,
Boër M.,
Stratta, G.
(2018).
GRB 130427A Afterglow: A Test for GRB Models.
Proceedings of Science
1-8.
http://dx.doi.org/10.22323/1.306.0071