Small scales structures and neutrino masses

TL;DR

This paper reviews how massive neutrinos influence cosmological observations, analyzing their effects from linear to non-linear scales through simulations, focusing on matter distribution, halo properties, and neutrino clustering.

Contribution

It provides a comprehensive analysis of neutrino impacts on non-linear cosmological structures using N-body simulations, extending previous linear studies.

Findings

Massive neutrinos suppress the matter power spectrum at small scales.

Neutrinos alter the halo mass function and halo-matter bias.

Clustering of cosmic neutrinos within galaxy clusters is characterized.

Abstract

We review the impact of massive neutrinos on cosmological observables at the linear order. By means of N-body simulations we investigate the signatures left by neutrinos on the fully non-linear regime. We present the effects induced by massive neutrinos on the matter power spectrum, the halo mass function and on the halo-matter bias in massive neutrino cosmologies. We also investigate the clustering of cosmic neutrinos within galaxy clusters.