Constraints on the Generalized Chaplygin Gas Model from Gamma-Ray Bursts
arXiv:1004.5585 · doi:10.1016/j.physletb.2011.07.070
Abstract
We study the Generalized Chaplygin gas model (GCGM) using Gamma-ray bursts as cosmological probes. In order to avoid the so-called circularity problem we use cosmology-independent data set and Bayesian statistics to impose constraints on the model parameters. We observe that a negative value for the parameter is favoured if we adopt a flat Universe and the estimated value of the parameter is lower than that found in literature.
10 pages, 29 figures, accepted for publication in Physics Letters B
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