Partial Ly$\alpha$ thermalization in an analytic nonlinear diffusion model
Cosmology and Nongalactic Astrophysics
2024-03-29 v1
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.
Cite
@article{arxiv.2402.11320,
title = {Partial Ly$\alpha$ thermalization in an analytic nonlinear diffusion model},
author = {Georg Wolschin},
journal= {arXiv preprint arXiv:2402.11320},
year = {2024}
}
Comments
19 pages, 6 figures. Submitted to Scientific Reports (SpringerNature)