Spectral distortions of the cosmic microwave background

Details Spectral distortions of the cosmic microwave background Spectral distortions of the cosmic microwave background

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...344...24a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 344, Sept. 1, 1989, p. 24-34. Research supported by the Alfred P. Sloan Fou

Mathematics

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13

Astronomical Spectroscopy, Cosmology, Relic Radiation, Universe, Cosmic Dust, Interstellar Extinction, Radiation Distribution, Radiative Transfer

Scientific paper

Recent 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.

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