Neutrinos in cosmology

摘要

I will review recent constraints on the mass and effective numberof (active) neutrinos as obtained from cosmological data of the large-scale structureof our Universe. Furthermore, I will also present constraints on the mass of a puta-tive (warm) dark matter particle candidate, a keV mass sterile neutrino, using theintergalactic medium as a probe of the matter density distribution at high redshift.