Cosmology with Clusters of Galaxies
Astrophysics
2011-04-15 v1
Abstract
I show that three independent methods utilizing clusters of galaxies - cluster dynamics and mass-to-light ratio, baryon fraction in clusters, and cluster evolution - all indicate the same robust result: the mass-density of the universe is low, Omega ~ 0.2, and the mass approximately traces light on large scales.
Cite
@article{arxiv.astro-ph/9901076,
title = {Cosmology with Clusters of Galaxies},
author = {Neta A. Bahcall},
journal= {arXiv preprint arXiv:astro-ph/9901076},
year = {2011}
}
Comments
Invited talk at Nobel98, ``Particle Physics and the Universe,''8/1998, 15 pages, 4 figures