Galaxy and cluster formation in a universe dominated by cold dark matter

Details Galaxy and cluster formation in a universe dominated by cold dark matter Galaxy and cluster formation in a universe dominated by cold dark matter

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pagr.conf..175p&link_type=abstract

Particles and gravity, p. 175 - 190

Physics

Astronomical Models, Dark Matter, Galactic Clusters, Galactic Evolution, Galaxies, Matter (Physics), Baryons, Gravitation, Mass, Universe

Scientific paper

The dark matter (DM) that appears to be gravitationally dominant on all astronomical scales larger than the cores of galaxies can be classified, on the basis of its characteristic free-streaming damping mass as hot, warm, or cold. For the case of cold DM, the shape of the DM fluctuation spectrum is determined by the primordial spectrum (on scales larger than the horizon) and stagspansion, the stagnation of the growth of DM fluctuations that enter the horizon while the universe is still radiation-dominated. An attractive feature of the cold dark matter hypothesis is its considerable predictive power: the post-recombination fluctuation spectrum is calculable, and it in turn governs the formation of galaxies and clusters. Good agreement with the data is obtained for a Zeldovich spectrum of primordial fluctuations.

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