Can gamma-ray bursts constrain quintessence?

2005/04/27 by T. Di Girolamo, R. Catena, M. Vietri +1 · 1 citation
Physics and Astronomy · #astro-ph #gr-qc

paper · pdf · doi:10.1088/1475-7516/2005/04/008

published as JCAP.0504:008,2005 · 21 pages, 4 figures

arxiv created 2005/04/27 · arxiv updated 2009/12/01

Abstract

Using the narrow clustering of the geometrically corrected gamma-ray energies released by gamma-ray bursts, we investigate the possibility of using these sources as standard candles to probe cosmological parameters such as the matter density Omega_m and the cosmological constant energy density Omega_Lambda. By simulating different samples of gamma-ray bursts, we find that Omega_m can be determined with accuracy ~7% with data from 300 sources. We also show that, if Omega = 1 is due to a quintessence field, some of the models proposed in the literature may be discriminated from a Universe with cosmological constant, by a similar-sized sample of gamma-ray bursts.

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