Further corrections to the theory of cosmological recombination

Details Further corrections to the theory of cosmological recombination Further corrections to the theory of cosmological recombination

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...353...21k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 353, April 10, 1990, p. 21-23.

Statistics

Computation

22

Computational Astrophysics, Cosmology, Density Distribution, Fokker-Planck Equation, Lyman Alpha Radiation

Scientific paper

Krolik (1989) pointed out that frequency redistribution due to scattering is more important than cosmological expansion in determining the Ly-alpha frequency profile during cosmological recombination, and that its effects substantially modify the rate of recombination. Although the first statement is true, the second statement is not: a basic symmetry of photon scattering leads to identical cancellations which almost completely erase the effects of both coherent and incoherent scattering. Only a small correction due to atomic recoil alters the line profile from the prediction of pure cosmological expansion, so that the pace of cosmological recombination can be well approximated by ignoring Ly-alpha scattering.

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