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Type:
Abstract
Title:
Formation and evolution of clusters of galaxies
Authors:
Kashlinsky, A.
Affiliation:
AA(National Radio Astronomy Observatory; Virginia, University, Charlottesville)
Journal:
IN: Radio continuum processes in clusters of galaxies; Proceedings of the Workshop, Green Bank, WV, Aug. 4-8, 1986 (A88-38551 15-90). Charlottesville, VA, National Radio Astronomy Observatory, 1986, p. 37-48; Discussion, p. 49.
Publication Date:
01/1986
Origin:
STI
Aabstract Copyright:
Bibliographic Code:
1986racp.work...37K
Doc-summary/Abstract:
In this review various scenarios for cluster formation are discussed. In order to understand how clusters of galaxies have formed, it is necessary to know in which order different scale structures in the universe form, which in turn is related to spectrum and type of primordial density fluctuations. If primordial density fluctuations are adiabatic, or if most of the mass is in the hot dark matter, then density fluctuations would be damped on scales below about (1-10) x 10 to the 15th solar masses, with the result that clusters and galaxies form by collapse and fragmentation of large (r) scales. If, on the other hand, primordial density fluctuations are isothermal or most of the mass in the universe is in cold dark matter, fluctuations survive on (practically) all scales and clusters of galaxies form via continuous gravitational clustering of smaller units.
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