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Spectral distortions of the cosmic microwave backgroundRecent experiments indicate that the spectrum of the cosmic microwave background deviates from a pure blackbody; here, spectral distortions produced by cosmic dust are considered. The main result is that cosmic dust in conjunction with an injected radiation field (perhaps produced by an early generation of very massive stars) can explain the observed spectral distortions without violating existing cosmological constraints. In addition, it is shown that Compton y-distortions can also explain the observed spectral shape, but the energetic requirements are more severe.
Document ID
19890064584
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Adams, Fred C.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Mcdowell, Jonathan C.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Freese, Katherine
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Levin, Janna
(MIT Cambridge, MA, United States)
Date Acquired
August 14, 2013
Publication Date
September 1, 1989
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 344
ISSN: 0004-637X
Subject Category
Space Radiation
Accession Number
89A51955
Funding Number(s)
CONTRACT_GRANT: NAGW-1320
Distribution Limits
Public
Copyright
Other

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