Gamma ray bursts (GRBs) as probes of Cosmological Parameters

Feraol F. Dirirsa, Soebur Razzaque

Research output: Contribution to journalConference articlepeer-review


Dark energy (the cosmological constant) is the basic constituent of the universe today that permeates all space, and is the most widely accepted theory to explain recent observations that the universe is expanding at an accelerated rate. Observations of GRBs, the most powerful cosmic explosions and which have been detected up to a photometric redshift z = 9.4, can play a crucial role to shed lights on dark energy and other cosmological parameters when the universe was much younger than today. GRBs might be good distance indicators, similar to Type Ia supernovae which have been detected only up to a redshift z = 1.914, once its emission can be characterized as standard candles. We study a sample of GRBs with known redshift and explore their observational properties to probe cosmological parameters by using the phenomenological models to consider GRBs as standard candles.

Original languageEnglish
Article number066
JournalProceedings of Science
Publication statusPublished - 2015
Event3rd Southern African Large Telescope Science Conference, SSC 2015 - Stellenbosch, South Africa
Duration: 1 Jun 20155 Jun 2015

ASJC Scopus subject areas

  • Multidisciplinary


Dive into the research topics of 'Gamma ray bursts (GRBs) as probes of Cosmological Parameters'. Together they form a unique fingerprint.

Cite this