A correct treatment of the stimulated process in cosmic recombination

Details A correct treatment of the stimulated process in cosmic recombination A correct treatment of the stimulated process in cosmic recombination

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasj...45..655s&link_type=abstract

PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 45, no. 5, p. 655-659

Computer Science

Numerical Analysis

14

Atomic Recombination, Cosmology, Hydrogen, Interstellar Gas, Numerical Analysis, Stimulation, Absorptivity, Gas Evolution, Integral Equations, Photoionization

Scientific paper

In previous studies on cosmic recombination, the stimulated-recombination rate was calculated assuming thermal equilibrium between the excited and ionized states of neutral hydrogen atoms. After pointing out that this assumption was not correct, we present a correct method for treating their transitions. Numerical calculations show that: (1) the epoch of recombination is not greatly altered by this revision, but that (2) the residual ionization degree after a 'freeze-out' becomes smaller by a factor of 3.

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