Implications of cosmological observations on neutrino and axion properties
by
Elena Giusarma(INFN, Univerista' La Sapienza, Roma, IT)
→
Europe/Rome
Description
ABSTRACT: One of the great puzzles related to the ΛCDM model is the nature of the dark matter (DM) component. In standard cosmology, hot, thermal relics are identified with the three light, active neutrinos but the existence of extra hot relic components, as sterile neutrino species and/or thermal axions are also possible. In this work I will illustrate the implications of neutrino properties on cosmological observables and I will analyse the constraints on the three active neutrino masses, extending the analyses to possible scenarios with additional hot thermal relics, as sterile neutrino species or axions, using the available cosmological data.