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A tilted cold dark matter cosmological scenarioA new cosmological scenario based on CDM but with a power spectrum index of about 0.7-0.8 is suggested. This model is predicted by various inflationary models with no fine tuning. This tilted CDM model, if normalized to COBE, alleviates many problems of the standard CDM model related to both small-scale and large-scale power. A physical bias of galaxies over dark matter of about two is required to fit spatial observations.
Document ID
19930030030
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Cen, Renyue
(NASA Headquarters Washington, DC United States)
Gnedin, Nickolay Y.
(NASA Headquarters Washington, DC United States)
Kofman, Lev A.
(NASA Headquarters Washington, DC United States)
Ostriker, Jeremiah P.
(Princeton Univ. Observatory, NJ, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1992
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 399
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A14027
Funding Number(s)
CONTRACT_GRANT: NSF AST-90-06958
CONTRACT_GRANT: NAGW-765
CONTRACT_GRANT: NSF AST-91-08103
CONTRACT_GRANT: NAGW-2448
Distribution Limits
Public
Copyright
Other

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