The imprint of cosmological hydrogen recombination lines on the power spectrum of the CMB
We explore the imprint of the cosmological hydrogen recombination lines on the power spectrum of the cosmic microwave background (CMB). In particular, we focus on the three strongest lines for the Balmer, Paschen and Brackett series of hydrogen. We expect changes in the angular power spectrum due to these lines of about 0.3 μK for the Hα line
Rubiño-Martín, J. A. et al.
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2005