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Secondary anisotropies of the CMB

Secondary anisotropies of the CMB

Publication date: 02 May 2008

Authors: Aghanim, N., et al.

Journal: Reports on Progress in Physics
Volume: 71
Issue: 6
Year: 2008

Copyright: IOP

The Cosmic Microwave Background fluctuations provide a powerful probe of the dark ages of the universe through the imprint of the secondary anisotropies associated with the reionization of the universe and the growth of structure. We review the relation between the secondary anisotropies and the primary anisotropies that are directly generated by quantum fluctuations in the very early universe. The physics of secondary fluctuations is described, with emphasis on the ionization history and the evolution of structure. We discuss the different signatures arising from the secondary effects in terms of their induced temperature fluctuations, polarization and statistics. The secondary anisotropies are being actively pursued at present, and we review the future and current observational status.

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