Marilena Loverde- University of Washington

Title: Hunting for Neutrinos and Dark Radiation with Cosmic Datasets

Abstract: Neutrinos and other light particles can leave a number of imprints in the cosmic microwave background anisotropies and on maps of the large-scale structure of our Universe. These imprints can not only demonstrate the presence of these particles and constrain their masses, but can provide insight into their nature via signatures of interactions or other behavior that changes during the history of the Universe. I will describe this physics, present constraints on non-standard neutrino self-interactions and other forms of dark radiation from cosmic datasets. I will also discuss novel signatures of massive neutrinos and the new technology needed to model their impact on structures in the Universe today.