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How exactly did the Universe become neutral?

Astrophysical Journal Supplement Series, no. 2 (1999): 407-430

被引用361|浏览11
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We present a refined treatment of H, He I, and He II recombination in the early Universe. The difference from previous calculations is that we use multi-level atoms and evolve the population of each level with redshift by including all bound-bound and bound-free transitions. In this framework we follow several hundred atomic energy levels...更多

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