Supernovae constraints on dark energy and modified gravity models
arXiv:astro-ph/0512076 · doi:10.1088/1742-6596/33/1/018
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.
6 pages, Latex file + 9 eps figures + (jpconf.cls,jpconf11.clo), to appear in the Proceedings of the Fourth Meeting on Constrained Dynamics and Quantum Gravity (QG05), Cala Gonone (Italy) September 12-16 2005
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Cited by in corpus (4)
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- Generalizing thawing dark energy models: the standard vis-à-vis model independent diagnostics
- Large-scale structure and the Cardassian fluid