Lyman-alpha radiation escape caused by heating of atoms and aberration in the era of recombination

Abstract

Determination of cosmological parameters from the results of the Planck mission is based on the standard theory of primary recombination in many respects. The recombination rate substantially depends on the level of recombination radiation arising in this process. Considering that into account the heating of hydrogen atoms by $Ly_{\alpha }$-radiation together with the aberration of radiation shows that the level of $Ly_{\alpha }$-radiation is lower than that predicted by the standard theory. This results in an increase in the recombination rate and a higher estimate of the redshift of last scattering, which can lead to a correction of the values of some cosmological parameters obtained from the results of Planck mission.