Email this article Relative Contribution of the Hydrogen 2s Two-Photon Decay and Lyman-α Escape Channels during the Epoch of Cosmological Recombination
- Authors: Rubiño-Martin J.A.1,2, Sunyaev R.A.3,4
-
Affiliations:
- Instituto de Astrofisica de Canarias
- Departamento de Astrofisica
- Max-Planck-Institut fuer Astrophysik
- Space Research Institute (IKI)
- Issue: Vol 44, No 1 (2018)
- Pages: 1-7
- Section: Article
- URL: https://journal-vniispk.ru/1063-7737/article/view/190437
- DOI: https://doi.org/10.1134/S1063773718010036
- ID: 190437
Cite item
Open Access
Access granted
Subscription Access
Abstract
We discuss the evolution of the ratio in number of recombinations due to 2s two photon escape and due to the escape of Lyman-α photons from the resonance during the epoch of cosmological recombination, within the width of the last scattering surface and near its boundaries. We discuss how this ratio evolves in time, and how it defines the profile of the Lyman-α line in the spectrum of CMB. One of the key reasons for explaining its time dependence is the strong overpopulation of the 2p level relative to the 2s level at redshifts z ≲ 750.
About the authors
J. A. Rubiño-Martin
Instituto de Astrofisica de Canarias; Departamento de Astrofisica
Author for correspondence.
Email: jalberto@iac.es
Spain, La Laguna, Tenerife; La Laguna, Tenerife
R. A. Sunyaev
Max-Planck-Institut fuer Astrophysik; Space Research Institute (IKI)
Email: jalberto@iac.es
Germany, Garching; Moscow
Supplementary files
