2000/10/30 by Yasushi Suto, Suto, Yasushi
Physics and Astronomy · #History and Developments in Astronomy #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0010622
10 pages, 8 figures. Invited talk at "Constructing the Universe with Clusters of Galaxies", IAP 2000 meeting, Paris (France) July 2000. To be published in the proceedings edited by Florence Durret & Daniel Gerbal
arxiv created 2000/10/30 · arxiv updated 2009/12/01
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.