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Hydrogen absorption lines in the cosmic microwave background spectrum |
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| Authors: | V. K. Dubrovich N. N. Shakhvorostova |
| Affiliation: | (1) Special Astrophysical Observatory, St. Petersburg Branch, Russian Academy of Sciences, St. Petersburg, Russia;(2) Pulkovo Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, Russia;(3) Astrospace Center, Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia |
| 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. |
| Keywords: | theoretical observational cosmology CMB spectrum CMB recombination lines recombination epoch |
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