Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...405..428h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 405, no. 2, p. 428-436.
Astronomy and Astrophysics
Astrophysics
86
Cosmology, Dark Matter, Galactic Clusters, Neutrinos, Power Spectra, Anisotropy, Cosmic Background Explorer Satellite, Microwave Emission, Radial Velocity
Scientific paper
Calculations of the autocorrelation function of rich clusters of galaxies are presented for several nonstandard variants of cold dark matter (CDM) that have an enhanced power spectrum on large scales compared to 'standard' omega = 1 CDM. The models considered are: (1) cold + hot dark matter (C + HDM) models with omega(CDM) + omega(v) + omega(b) = 1 (where omega(v), the fraction of the critical density in one or three species of light neutrinos, is comparable to omega(CDM)); (2) omega(CDM) + omega(b) = 0.2 or 1 (where omega(b), the fraction of critical density in baryonic matter, is comparable to omega(CDM)); and (3) CDM with a non-Zel'dovich fluctuation spectrum that arises in a particular inflationary model. The cluster correlation functions are calculated using the theory of linear Gaussian fluctuations, and are compared to the currently available data on both spatial and angular correlations of rich Abell clusters, including corrections for projection effects.
Holtzman Jon A.
Primack Joel R.
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