Astronomy Letters

, Volume 34, Issue 5, pp 289–297

Nonresonant effects and hydrogen transition line shape in cosmological recombination problems

Open Access

DOI: 10.1134/S1063773708050010

Cite this article as:
Karshenboim, S.G. & Ivanov, V.G. Astron. Lett. (2008) 34: 289. doi:10.1134/S1063773708050010


Data on the fluctuations in cosmic microwave background (CMB) radiation, whose accuracy is expected to increase in the immediate future, allow the cosmological recombination of atomic hydrogen and its interaction with the CMB radiation to be studied. Nonresonant effects play an important role in these recombination processes. We consider the quantum-mechanical foundations of the nonresonant processes and present our calculations for the differential two-photon decay rates of the 3s and 3d levels in the hydrogen atom.

Key words

cosmology cosmic microwave background radiation 

PACS numbers

95.30.Jx 98.70.Vc 
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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  1. 1.Mendeleev Institute for Metrology (VNIIM)St. PetersburgRussia
  2. 2.Max-Planck-Institut für QuantenoptikGarchingGermany
  3. 3.Pulkovo Astronomical ObservatoryRussian Academy of SciencesSt. PetersburgRussia

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