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Type:
Abstract
Title:
Gravitational clustering of Gaussian density fluctuations and the origin of hierarchy correlations
Authors:
Kashlinsky, A.
Affiliation:
AA(NORDITA, Copenhagen, Denmark)
Journal:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 376, July 20, 1991, p. L5-L9. (ApJ Homepage)
Publication Date:
07/1991
Origin:
STI
Aabstract Copyright:
Bibliographic Code:
1991ApJ...376L...5K
Doc-summary/Abstract:
The present theory of gravitational pulsing, which identifies galaxies and groups and clusters of galaxies with regions of assumed Gaussian primordial density fluctuations (PDFs) having a smaller turnaround time than the age of the universe, shows that the properties of the hierarchy created uniquely depend on the PDF power spectrum. The resulting distribution of galaxies and groups and clusters is non-Gaussian; the theory successfully reproduces both the observed two- and three-point correlation functions for clusters of galaxies of n = -1 spectrum. The hierarchy thus constructed specifies unique higher-order correlations.
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