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Author Brainerd, T. G. ♦ Villumsen, J. V.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ NONLUMINOUS MATTER ♦ SPECTRA ♦ COMPUTERIZED SIMULATION ♦ GALAXIES ♦ RED SHIFT
Abstract It has been suggested that a COBE-normalized ``standard`` cold dark matter (CDM) universe has too much power on small scales compared to the power spectrum of IRAS galaxies. We present the results of an N-body simulation of such a universe and compare the redshift space {ital P}({ital k}) for dark matter halos to that of the IRAS and CfA galaxies. Over the scales that can be investigated in the simulation, {ital P}({ital k}) for halos with overdensities {delta}{similar_to}250 is in excellent agreement with {ital P}({ital k}) for the IRAS galaxies. {ital P}({ital k}) for halos with overdensities {delta}{similar_to}2000 (a more ``biased`` tracer of the mass than the {delta}{similar_to}250 halos) is in moderately good agreement with {ital P}({ital k}) for the CfA galaxies. Assuming one luminous galaxy per dark matter halo, we do not find an excess small-scale power problem for galaxies in a COBE-normalized standard CDM universe. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 1995-07-01
Publisher Place United States
Volume Number 336
Issue Number 1
Technical Publication No. CONF-9410287-


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