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Type:
Abstract
Title:
Determining Omega from the cluster correlation function
Authors:
Kashlinsky, A.
Affiliation:
NORDITA, Blegdamsvej 17, Copenhagen, Denmark
Journal:
Physics Reports, 307:(1-4),67
Publication Date:
12/1998
Origin:
AUTHOR
Aabstract Copyright:
(c) 1998: The American Astronomical Society
Bibliographic Code:
1998PhR...307...67K
Doc-summary/Abstract:
It is shown how data on the cluster correlation function can be used to reconstruct the density of the pregalactic density field on the cluster mass scale. The method is applied to data on the cluster correlation amplitude-richness dependence. The spectrum of the recovered density field has the same shape as that derived from data on the galaxy correlation function is measured as a function of a linear scale. Matching the two amplitudes relates the mass to the comoving scale it contains and thereby leads to a direct determination of Omega. The resultant density parameter turns out to be Omega = 0.25.
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