Freitas 2010 用伽马暴限制这个模型：the Generalized Chaplygin Gas Model

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Title:		Constraints on the Generalized Chaplygin Gas Model from Gamma-Ray Bursts
Authors:		Freitas, R. C.; Gonçalves, S. V. B.; Velten, H. E. S.
Publication:		eprint arXiv:1004.5585
Publication Date:		04/2010
Origin:		ARXIV
Keywords:		Astrophysics - Cosmology and Extragalactic Astrophysics
Comment:		10 pages, 28 figures
Bibliographic Code:		2010arXiv1004.5585F

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 $\alpha$ is favoured if we adopt a flat Universe and the estimated value of the parameter $H_{0}$ is lower than that found in literature.

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