Dark Matter and Neutrinos

TL;DR

This paper reviews evidence for dark matter, emphasizing neutrinos as potential constituents, and discusses theoretical and experimental indications supporting their role in cosmology and galaxy dynamics.

Contribution

It provides a comprehensive overview of neutrinos as dark matter candidates, highlighting recent experimental and theoretical developments.

Findings

Neutrinos oscillate and have tiny masses.

Signatures suggest existence of sterile neutrinos.

Neutrinos play a significant role in cosmology.

Abstract

The Keplerian distribution of velocities is not observed in the rotation of large scale structures, such as found in the rotation of spiral galaxies. The deviation from Keplerian distribution provides compelling evidence of the presence of non-luminous matter i.e. called dark matter. There are several astrophysical motivations for investigating the dark matter in and around the galaxy as halo. In this work we address various theoretical and experimental indications pointing towards the existence of this unknown form of matter. Amongst its constituents neutrino is one of the most prospective candidates. We know the neutrinos oscillate and have tiny masses, but there are also signatures for existence of heavy and light sterile neutrinos and possibility of their mixing. Altogether, the role of neutrinos is of great interests in cosmology and understanding dark matter.