Cosmic opacity to CMB photons and polarization measurements

Details Cosmic opacity to CMB photons and polarization measurements Cosmic opacity to CMB photons and polarization measurements

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003newar..47..849c&link_type=abstract

New Astronomy Reviews, Volume 47, Issue 8-10, p. 849-853.

Mathematics

Logic

Cosmic Microwave Background, Cosmology: Cosmological Parameters

Scientific paper

Low-l polarization measures can remove the degeneracy between primordial spectral index (ns) and reionization opacity (τ). Using a large set of model realizations we test how cosmic variance possibly limits this removal. A detailed likelihood analysis shows that, if τ~0.17 (WMAP best-fit value), both τ and ns can be significantly constrained by a polarization experiment with a sensitivity similar to SPOrt.

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