Microwave background anisotropy and decaying-particle models for a flat universe

Details Microwave background anisotropy and decaying-particle models for a flat universe Microwave background anisotropy and decaying-particle models for a flat universe

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvl..54.2269v&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 54, May 20, 1985, p. 2269-2272.

Astronomy and Astrophysics

Astrophysics

25

Anisotropy, Background Radiation, Big Bang Cosmology, Relic Radiation, Universe, Baryons, Mass Distribution, Microwave Frequencies, Missing Mass (Astrophysics), Neutrinos, Red Shift

Scientific paper

The fine-scale anisotropy of the cosmic microwave background radiation, induced by primordial scale-invariant adiabatic density fluctuations, has been studied in flat cosmological models dominated by relativistic particles from the recent decay of a massive relic-particle species. The authors find that, if the relic-particle species consists of massive, unstable neutrinos, there is appreciable, and probably excessive, fine-scale anisotropy in the cosmic microwave background.

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