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Advances in Astronomy
Volume 2015, Article ID 192383, 16 pages
http://dx.doi.org/10.1155/2015/192383
Review Article

Reverse Shock Emission in Gamma-Ray Bursts Revisited

Department of Astronomy and Astrophysics, Department of Physics, Center for Particle and Gravitational Astrophysics, Institute for Gravitation and the Cosmos, 525 Davey Lab, Pennsylvania State University, University Park, PA 16802, USA

Received 26 November 2014; Accepted 7 April 2015

Academic Editor: Valery Nakariakov

Copyright © 2015 He Gao and Peter Mészáros. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A generic synchrotron external shock model is the widely preferred paradigm used to interpret the broadband afterglow data of gamma-ray bursts (GRBs), including predicted observable signatures from a reverse shock which have been confirmed by observations. Investigations of the nature of the reverse shock emission can provide valuable insights into the intrinsic properties of the GRB ejecta. Here we briefly review the standard and the extended models of the reverse shock emission, discussing the connection between the theory and observations, including the implications of the latest observational advances.