Observational Constraints on the Generalized Chaplygin Gas

Details Observational Constraints on the Generalized Chaplygin Gas Observational Constraints on the Generalized Chaplygin Gas

2009-09-29

arxiv.org/abs/0909.5258v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Accepted by IJMPD; 18 pages; 10 Figures

Scientific paper

In this paper we study a quintessence cosmological model in which the dark energy component is considered to be the Generalized Chaplygin Gas and the curvature of the three-geometry is taken into account. Two parameters characterize this sort of fluid, the $\nu$ and the $\alpha$ parameters. We use different astronomical data for restricting these parameters. It is shown that the constraint $\nu \lesssim \alpha$ agrees enough well with the astronomical observations.

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