Anisotropies of the cosmic background radiation in a 'hot' dark matter universe

Details Anisotropies of the cosmic background radiation in a 'hot' dark matter universe Anisotropies of the cosmic background radiation in a 'hot' dark matter universe

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...382...71a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 382, Nov. 20, 1991, p. 71-78.

Statistics

Computation

23

Computational Astrophysics, Dark Matter, Relic Radiation, Universe, Anisotropy, Astronomical Models, Numerical Integration, Red Shift, Thomson Scattering

Scientific paper

Microwave photons propagating through the evolving density inhomogeneities in a model universe filled with 'hot' dark matter are investigated. The calculation performed is fully 3D and the density inhomogeneities are followed into the nonlinear regime. The effect of Thomson scattering throughout the model history is included, using a Monte Carlo scattering algorithm. The optical depth for this scattering is a function of time determined by the free electron density, which is obtained by this numerical integration of the relevant equations in this particular model universe. The results are presented in the form of sky maps such as an observer might make; the maps are of 4 x 4 deg and 2 x 2 deg regions.

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