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Fine-scale anisotropy of the cosmic microwave background in a universe dominated by cold dark matterThe fine-scale anisotropy of the cosmic microwave background radiation has been studied in cosmological models with a scale-invariant primordial adiabatic density fluctuation spectrum dominated by cold, weakly interacting particles. Normalization of the present fluctuation spectrum to the observed galaxy distribution results in excessive temperature anisotropy when compared to a recent upper limit on 4.5 arcmin unless the density parameter exceeds 0.4. When this result is combined with the requirement that the universe be at least 13 billion years old, it is found that if the cosmological constant is zero, then the density parameter is between roughly 0.4 and 1 and the Hubble constant is between roughly 60 km/s/Mpc and 50 km/s/Mpc.
Document ID
19850034849
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Vittorio, N.
(California, University Berkeley, CA; Roma, Universita, Rome, Italy)
Silk, J.
(California, University Berkeley, CA, United States)
Date Acquired
August 12, 2013
Publication Date
October 15, 1984
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters to the Editor
Volume: 285
ISSN: 0004-637X
Subject Category
Space Radiation
Accession Number
85A17000
Funding Number(s)
CONTRACT_GRANT: NGR-05-003-578
CONTRACT_GRANT: DE-AT03-82ER-40069
Distribution Limits
Public
Copyright
Other

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