Secondary ionization in a flat universe

Details Secondary ionization in a flat universe Secondary ionization in a flat universe

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...420...26a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 420, no. 1, p. 26-32

Astronomy and Astrophysics

Astrophysics

8

Background Radiation, Dark Matter, Ionization, Radiative Transfer, Universe, Cosmology, Galactic Evolution, Recombination Reactions, Temperature Gradients

Scientific paper

We analyze the effect of a secondary ionization on the evolution of temperature fluctuations in cosmic background radiation. The main results presented in this paper are appropriate analytic expressions of the transfer function relating temperature fluctuations to matter density perturbations at recombination for all possible recombination histories. Furthermore, we particularize our calculation to the standard cold dark matter model, where we study the erasure of primordial temperature fluctuations and calculate the magnitude and angular scale of the damping induced by a late recombination.

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