Reverse Shock Emission in Gamma-ray Bursts Revisited

TL;DR

This paper reviews the reverse shock emission in gamma-ray bursts, discussing theoretical models and recent observational advances to better understand the properties of GRB ejecta.

Contribution

It provides a comprehensive review of standard and extended models of reverse shock emission and their connection to recent observational data.

Findings

Confirmation of reverse shock signatures in observations

Insights into GRB ejecta properties from reverse shock analysis

Updated models aligning theory with recent data

Abstract

A generic synchrotron external shock model is the widely preferred paradigm used to interpret the broad-band 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.