Gamma Ray Bursts as Probes of the Distant Universe

TL;DR

This paper reviews how Gamma Ray Bursts serve as effective tools for studying the high-redshift universe and galaxy evolution through observational data of their host galaxies and afterglow spectra.

Contribution

It provides a comprehensive overview of recent observational techniques and findings using GRBs to probe distant galaxies and cosmic evolution.

Findings

GRBs enable the study of high-redshift galaxies.

Spectroscopic analysis of GRB afterglows reveals intergalactic medium properties.

Photometric observations of GRB hosts inform galaxy evolution models.

Abstract

We review recent results on the high-redshift universe and the cosmic evolution obtained using Gamma Ray Bursts (GRBs) as tracers of high-redshift galaxies. Most of the results come from photometric and spectroscopic observations of GRB host galaxies once the afterglow has faded away but also from the analysis of the GRB afterglow line of sight as revealed by absorptions in their optical spectrum.