Galaxy cluster angular size data constraints on dark energy
Cosmology and Nongalactic Astrophysics
2013-07-12 v2
Abstract
We use angular size versus redshift data for galaxy clusters from Bonamente et al. (2006) to place constraints on model parameters of constant and time-evolving dark energy cosmological models. These constraints are compatible with those from other recent data, but are not very restrictive. A joint analysis of the angular size data with more restrictive baryon acoustic oscillation peak length scale and supernova Type Ia apparent magnitude data favors a spatially-flat cosmological model currently dominated by a time-independent cosmological constant but does not exclude time-varying dark energy.
Cite
@article{arxiv.1105.5660,
title = {Galaxy cluster angular size data constraints on dark energy},
author = {Yun Chen and Bharat Ratra},
journal= {arXiv preprint arXiv:1105.5660},
year = {2013}
}
Comments
8 pages, 11 figures, 2 tables