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Cosmological constraints on Neutrino - Dark Matter interactions

Gianpiero Mangano
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Abstract

I summarize the results of a recent analysis where the cosmological effects of interactions of neutrinos with cold Dark Matter (DM) is investigated. This interaction produces diffusion-damped oscillations in the matter power spectrum, analogous to the acoustic oscillations in the baryon-photon fluid. I discuss the bounds from the Sloan Digital Sky Survey on the corresponding opacity defined as the ratio of neutrino-DM scattering cross section over DM mass, and compare with the constraint from observation of neutrinos from supernova 1987A.

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Gianpiero Mangano. 2006-11-29. Cosmological constraints on Neutrino - Dark Matter interactions. https://doi.org/10.1016/j.nuclphysbps.2007.02.026

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