Hydrogen Absorption Lines in the Cosmic Microwave Background Spectrum
Abstract
We have calculated the intensities of the subordinate hydrogen lines formed during the recombination epoch at redshifts 800 < z < 1600. We show that an allowance for the angular momentum splitting of hydrogen atomic energy levels and the dipole transition selection rules can reveal absorption features in the cosmic microwave background recombination spectrum in the submillimeter wavelength range.
- Publication:
-
Astronomy Letters
- Pub Date:
- August 2004
- DOI:
- 10.1134/1.1784491
- Bibcode:
- 2004AstL...30..509D