Cosmology from 3 years of WMAP CMB data

Details Cosmology from 3 years of WMAP CMB data Cosmology from 3 years of WMAP CMB data

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006newar..50..850b&link_type=abstract

New Astronomy Reviews, Volume 50, Issue 11-12, p. 850-853.

Astronomy and Astrophysics

Astronomy

3

Scientific paper

The combined 3 year observations from the Wilkinson Microwave Anisotropy Probe (WMAP) have yielded full-sky temperature and polarization maps in five frequency bands (K, Ka, Q, V, W) between 23 and 94 GHz. In this article we discuss the cosmological implications of these observations. The combination of temperature and polarization data leads to a significant improvement in the measurement of the reionization optical depth τ = 0.093 ± 0.029. This, in turn, breaks a number of key degeneracies present in the constraints from temperature measurements alone allowing the WMAP CMB data on its own to offer a powerful insight into the universe’s constituents and the processes that generated the initial conditions for structure formation.

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