Supernovae constraints on dark energy and modified gravity models
Astrophysics
2015-06-24 v1
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.
Cite
@article{arxiv.astro-ph/0512076,
title = {Supernovae constraints on dark energy and modified gravity models},
author = {M. C. Bento and O. Bertolami and N. M. C. Santos and A. A. Sen},
journal= {arXiv preprint arXiv:astro-ph/0512076},
year = {2015}
}
Comments
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