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20212026
most citedA new determination of the primordial helium abundance using the analyses of HII region spectra from SDSS

52 citations · 88 across the 5 of their papers we have counts for

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physics.gen-ph2026

Hyperfine transitions in atoms and rotational transitions in molecules of the early Universe as a possible source of CMB distortions

M. N. Golubev, P. A. Kislitsyn, A. V. Ivanchik

In the near future, measurements are expected to detect the influence of the hyperfine transition in the ground state of the hydrogen atom on the cosmic microwave background (CMB)…