Reionization and Cosmic Microwave Anisotropies

Naoshi Sugiyama; Joseph Silk; Nicola Vittorio

doi:10.1086/187122

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arXiv · astro-ph/9310051

Reionization and Cosmic Microwave Anisotropies

Naoshi Sugiyama·Joseph Silk·Nicola Vittorio

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Abstract

The effects of reionization, occurring after standard recombination in cold dark matter-dominated models, on CMB anisotropies are investigated. Late-time reionization reduces the CMB anisotropies, in particular, on degree scales. It is found that constraints on cold dark matter-dominated models from the highest frequency channel of the 9-point South Pole data are significantly relaxed for models which are consistent with Big Bang nucleosynthesis if reionization is assumed to have occurred by redshift $\sim 20.$

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Naoshi Sugiyama, Joseph Silk, Nicola Vittorio. 1993-10-29. Reionization and Cosmic Microwave Anisotropies. https://doi.org/10.1086/187122

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