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Seeded hot dark matter models with inflationWe examine massive neutrino (hot dark matter) models for large-scale structure in which the density perturbations are produced by randomly distributed relic seeds and by inflation. Power spectra, streaming velocities, and the Sachs-Wolfe quadrupole fluctuation are derived for this model. We find that the pure seeded hot dark matter model without inflation produces Sachs-Wolfe fluctuations far smaller than those seen by COBE. With the addition of inflationary perturbations, fluctuations consistent with COBE can be produced. The COBE results set the normalization of the inflationary component, which determines the large-scale (about 50/h Mpc) streaming velocities. The normalization of the seed power spectrum is a free parameter, which can be adjusted to obtain the desired fluctuations on small scales. The power spectra produced are very similar to those seen in mixed hot and cold dark matter models.
Document ID
19930044631
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gratsias, John
(NASA Headquarters Washington, DC United States)
Scherrer, Robert J.
(NASA Headquarters Washington, DC United States)
Steigman, Gary
(NASA Headquarters Washington, DC United States)
Villumsen, Jens V.
(Ohio State Univ. Columbus, United States)
Date Acquired
August 16, 2013
Publication Date
March 1, 1993
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 405
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A28628
Funding Number(s)
CONTRACT_GRANT: DE-AC02-76ER-01545
CONTRACT_GRANT: NAGW-2589
CONTRACT_GRANT: NSF AST-89-21001
Distribution Limits
Public
Copyright
Other

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