PIRSA:21100025

Cosmological and Astrophysical Probes of Sterile Neutrinos

Sabti, N. (2021). Cosmological and Astrophysical Probes of Sterile Neutrinos. Perimeter Institute. https://pirsa.org/21100025

Sabti, Nashwan. Cosmological and Astrophysical Probes of Sterile Neutrinos. Perimeter Institute, Oct. 19, 2021, https://pirsa.org/21100025 

          @misc{ pirsa_PIRSA:21100025,
            doi = {10.48660/21100025},
            url = {https://pirsa.org/21100025},
            author = {Sabti, Nashwan},
            keywords = {Particle Physics},
            language = {en},
            title = {Cosmological and Astrophysical Probes of Sterile Neutrinos},
            publisher = {Perimeter Institute},
            year = {2021},
            month = {oct},
            note = {PIRSA:21100025 see, \url{https://pirsa.org}}
          }

Nashwan Sabti

King's College London

Talk number
PIRSA:21100025
Collection
Talk Type
Subject
Abstract

Sterile neutrinos have been proposed to tackle a number of outstanding questions in physics, including the phenomena of dark matter, neutrino masses and the baryon asymmetry of the Universe. I will review current limits on GeV-, MeV- and keV-scale sterile neutrinos from cosmology and astrophysics. In particular, I will focus on how primordial abundance determinations, Cosmic Microwave Background observations and stellar kinematic inferences from dwarf spheroidal galaxies allow us to set robust constraints across this mass scale. I will then end with a short discussion on how sterile neutrinos could relax cosmological bounds on neutrino masses and what implications this would have for experiments like KATRIN.