Constraints on the generalized Chaplygin gas model from Gamma-ray bursts
Copyright policy )Constraints on the generalized Chaplygin gas model from Gamma-ray bursts
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 $H_{0}$ is lower than that found in literature.
10 pages, 29 figures, accepted for publication in Physics Letters B
- UNIVERSIDADE DE SAO PAULO Brazil
- Bielefeld University Germany
- Universidade Federal do Espírito Santo Brazil
- Universidade Federal do Espírito Santo Brazil
High Energy Astrophysical Phenomena (astro-ph.HE), Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics
High Energy Astrophysical Phenomena (astro-ph.HE), Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics
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