Constraints on dark energy from the lookback time versus redshift test
Cosmology and Nongalactic Astrophysics
2014-11-20 v3
Abstract
We use lookback time versus redshift data from galaxy clusters (Capozziello et al., 2004) and passively evolving galaxies (Simon et al., 2005), and apply a bayesian prior on the total age of the Universe based on WMAP measurements, to constrain dark energy cosmological model parameters. Current lookback time data provide interesting and moderately restrictive constraints on cosmological parameters. When used jointly with current baryon acoustic peak and Type Ia supernovae apparent magnitude versus redshift data, lookback time data tighten the constraints on parameters and favor slightly smaller values of the nonrelativistic matter energy density.
Cite
@article{arxiv.0906.2734,
title = {Constraints on dark energy from the lookback time versus redshift test},
author = {Lado Samushia and Abha Dev and Deepak Jain and Bharat Ratra},
journal= {arXiv preprint arXiv:0906.2734},
year = {2014}
}
Comments
Physics Letters B in press. 15 pages, 6 figures, 1 table. Minor typos fixed