Clusters, Cosmology and Mergers

Details Clusters, Cosmology and Mergers Clusters, Cosmology and Mergers

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002assl..272..253e&link_type=abstract

Merging Processes in Galaxy Clusters. Edited by L. Feretti, I.M. Gioia, G. Giovannini. Astrophysics and Space Science Library, V

Astronomy and Astrophysics

Astrophysics

13

Scientific paper

The character of the galaxy cluster population holds clues to the identity of the particular world model that best describes our universe. Although clusters are complex in their fine detail, their dark matter and intracluster medium (ICM) content appear to be well described by relatively simple processes driven by gravitationally induced mergers. After reviewing theoretical frameworks of spherical collapse and hierarchical clustering, we separate the problem of extracting cosmological parameters from observations into two parts: describing the space density of clusters as a function of total mass and calibrating relations that connect total mass to observable quantities.

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