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Supernovae constraints on dark energy and modified gravity models

M. C. Bento·O. Bertolami·N. M. C. Santos·A. A. Sen
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Abstract

We use the Type Ia Supernova gold sample to constrain the parameters of dark energy models namely the Cardassian, Dvali-Turner (DT) and generalized Chaplygin gas (GCG) models. In our best fit analysis for these dark energy proposals we consider flat and the non-flat priors. For all models, we find that relaxing the flatness condition implies that data favors a positive curvature; moreover, the GCG model is nearly flat, as required by Cosmic Microwave Background (CMB) observations.

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M. C. Bento, O. Bertolami, N. M. C. Santos, A. A. Sen. 2005-12-03. Supernovae constraints on dark energy and modified gravity models. https://doi.org/10.1088/1742-6596%2F33%2F1%2F018

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