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Title: GRBs as Probes of the IGM
Authors: Cucchiara, Antonino
Totani, Tonomori
Tanvir, Nial
First Published: 6-May-2016
Publisher: Springer Verlag
Citation: Space Science Reviews, 2016, 202 (1), pp. 143–158
Abstract: Gamma-ray Bursts (GRBs) are the most powerful explosions known, capable of outshining the rest of gamma-ray sky during their short-lived prompt emission. Their cosmological nature makes them the best tool to explore the final stages in the lives of very massive stars up to the highest redshifts. Furthermore, studying the emission from their low-energy counterparts (optical and infrared) via rapid spectroscopy, we have been able to pin down the exact location of the most distant galaxies as well as placing stringent constraints on their host galaxies and intervening systems at low and high-redshift (e.g. metallicity and neutral hydrogen fraction). In fact, each GRB spectrum contains absorption features imprinted by metals in the host interstellar medium (ISM) as well as the intervening intergalactic medium (IGM) along the line of sight. In this chapter we summarize the progress made using a large dataset of GRB spectra in understanding the nature of both these absorbers and how GRBs can be used to study the early Universe, in particular to measure the neutral hydrogen fraction and the escape fraction of UV photons before and during the epoch of re-ionization.
DOI Link: 10.1007/s11214-016-0253-4
ISSN: 0038-6308
eISSN: 1572-9672
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2016 Springer Verlag. Deposited with reference to the publisher’s open access archiving policy.
Description: The file associated with this record is under a 12 month embargo from publication in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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