Neutrino physics from the polarized microwave background and the low-redshift Universe

by Dr Erminia Calabrese (University of Oxford)

Wednesday 8 Mar 2017, 13:00 → 14:00 Europe/Brussels

Cyclotron

Cosmological observations provide information on the nature of neutrino particles via a measurement of the number of species and their total mass. I will discuss how to pin down neutrino properties with early- and late-time probes of the Universe's content and evolution, and how to distinguish the effects of neutrinos from other cosmological parameters. I will summarize current limits obtained with cosmic microwave background (CMB) data from the Planck satellite, in combination with measurements of the galaxy clustering scale. I will anticipate new CMB measurements from the Atacama Cosmology Telescope in Chile, as part of the Simons Observatory and of the CMB Stage IV project, which will enable a cosmological detection of the absolute neutrino mass scale and a percent-level measurement of the number of species.