The Case for Omega_M = 0.33 +/- 0.035
Astrophysics
2011-05-12 v2 High Energy Physics - Phenomenology
Abstract
For decades, the determination of the mean density of matter(Omega_M) has been tied to the distribution of light. This has led to a ``bias,'' perhaps as large as a factor of 2, in determining a key cosmological parameter. Recent measurements of the physical properties of clusters, cosmic microwave background (CMB) anisotropy and the power spectrum of mass inhomogeneity now allow a determination of Omega_M without ``visual bias.'' The early data lead to a consistent picture of the matter and baryon densities, with Omega_B = 0.039 +/- 0.0075 and Omega_M = 0.33 +/- 0.035.
Keywords
Cite
@article{arxiv.astro-ph/0106035,
title = {The Case for Omega_M = 0.33 +/- 0.035},
author = {Michael S. Turner},
journal= {arXiv preprint arXiv:astro-ph/0106035},
year = {2011}
}
Comments
4 ApJ LaTeX. Submitted to Astrophys J Lett. Less provocative title, same conclusions