Cosmology with Clusters of Galaxies

Details Cosmology with Clusters of Galaxies Cosmology with Clusters of Galaxies

1999-01-08

arxiv.org/abs/astro-ph/9901076v1

Phys.Scripta T85:32-36,2000

Astronomy and Astrophysics

Astrophysics

Invited talk at Nobel98, ``Particle Physics and the Universe,''8/1998, 15 pages, 4 figures

Scientific paper

10.1238/Physica.Topical.085a0003

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.

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