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Record Details

Record 67 of 10730
Seeded hot dark matter models with inflation
External Online Source: doi:10.1086/172339
Author and Affiliation:
Gratsias, John(NASA, Washington, DC, United States)
Scherrer, Robert J.(NASA, Washington, DC, United States)
Steigman, Gary(NASA, Washington, DC, United States)
Villumsen, Jens V.(Ohio State Univ., Columbus, United States)
Abstract: We 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.
Publication Date: Mar 01, 1993
Document ID:
19930044631
(Acquired Dec 28, 1995)
Accession Number: 93A28628
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Astrophysical Journal, Part 1 (ISSN 0004-637X); 405; 1; p. 30-33.
Publisher Information: United States
Contract/Grant/Task Num: DE-AC02-76ER-01545; NSF AST-89-21001; NAGW-2589
Financial Sponsor: NASA; United States
Organization Source: NASA; Washington, DC, United States
Description: 4p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ASTRONOMICAL MODELS; DARK MATTER; INFLATING; NEUTRINOS; UNIVERSE; DENSITY DISTRIBUTION; POWER SPECTRA
Imprint And Other Notes: Astrophysical Journal, Part 1 vol. 405, no. 1 p. 30-33. March 1, 1993
Availability Source: Other Sources
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