Cosmology with Clusters of Galaxies
arXiv:astro-ph/9901076 · doi:10.1238/Physica.Topical.085a00032
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.
Invited talk at Nobel98, ``Particle Physics and the Universe,''8/1998, 15 pages, 4 figures