The Universe Traced by Clusters

Details The Universe Traced by Clusters The Universe Traced by Clusters

2000-10-30

arxiv.org/abs/astro-ph/0010622v1

Astronomy and Astrophysics

Astrophysics

10 pages, 8 figures. Invited talk at "Constructing the Universe with Clusters of Galaxies", IAP 2000 meeting, Paris (France) J

Scientific paper

I critically review a methodology of using clusters of galaxies as cosmological probes. The understanding of the abundances and spatial correlations of dark matter halos has been significantly advanced especially for a last few years. Nevertheless such dark matter halos are not necessarily identical to clusters of galaxies in the universe. This is a quite obvious fact, but it seems that the resulting systematic errors, on the cosmological parameter estimates for instance, are often neglected in the literature.

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