Observations of GRBs at high redshift

Nial R. Tanvir*, Páll Jakobsson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


The extreme luminosity of gamma-ray bursts and their afterglows means they are detectable, in principle, to very high redshifts. Although the redshift distribution of gamma-ray bursts (GRBs) is difficult to determine, due to incompleteness of present samples, we argue that for Swift-detected bursts, the median redshift is between 2.5 and 3, with a few per cent probably at z>6. Thus, GRBs are potentially powerful probes of the era of reionization and the sources responsible for it. Moreover, it seems probable that they can provide constraints on the star-formation history of the Universe and may also help in the determination of the cosmological parameters.

Original languageEnglish
Pages (from-to)1377-1384
Number of pages8
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Issue number1854
Publication statusPublished - 15 May 2007

Other keywords

  • Cosmic reionization
  • Gamma-ray bursts
  • Host galaxies


Dive into the research topics of 'Observations of GRBs at high redshift'. Together they form a unique fingerprint.

Cite this