Partial Ly thermalization in an analytic nonlinear diffusion model
arXiv:2402.11320 · doi:10.1038/s41598-024-54833-z
Abstract
During recombination, the cosmic background radiation is disturbed, in particular, by Lyman-alpha emissions from neutral hydrogen. It is proposed to account for the subsequent time-dependent partial thermalization of the Lyman-alpha energy content in an analytically solvable nonlinear diffusion model. The amplitude of the partially thermalized and redshifted Ly- line is found to be too low to be visible in the cosmic microwave spectrum, in accordance with previous numerical models and Planck observations.
arXiv comment19 pages, 6 figures. Submitted to Scientific Reports (SpringerNature)
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