Indication for Primordial Anisotropies in the Neutrino Background from WMAP and SDSS

Abstract

We demonstrate that combining Cosmic Microwave Background anisotropy measurements from the 1st year WMAP observations with clustering data from the SLOAN galaxy redshift survey yields an indication for primordial anisotropies in the cosmological Neutrino Background.

4 pages, 4 figures (1 new figure). Discussion expanded following referee suggestions, assumption on the number of massless neutrino families relaxed. Conclusions largely unchanged

References in corpus (4)

• Cosmological parameter analysis including SDSS Ly-alpha forest and galaxy bias: constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy
• Observables sensitive to absolute neutrino masses: Constraints and correlations from world neutrino data
• Structure formation with strongly interacting neutrinos - implications for the cosmological neutrino mass bound
• Constraints on a mixed inflaton and curvaton scenario for the generation of the curvature perturbation

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