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Non Thermal Features in the Cosmic Neutrino Background

G. Mangano

astro-pharXiv:astro-ph/0603603

Abstract

I review some of the basic information on the Cosmic Neutrino Background momentum distribution. In particular, I discuss how present data from several cosmological observables such as Big Bang Nucleosynthesis, Cosmic Microwave Background and Large Scale Structure power spectrum constrain possible deviations from a standard Fermi-Dirac thermal distribution.

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