Professor EmeritusContact Informationrghr@uw.edu206-616-2745Personal WebsiteC505, B037 Fields of Interest Astrophysics & CosmologyNeutrino PhysicsNuclear Experiment Research Research Groups Neutrinos: HALO Neutrinos: KATRIN Neutrinos: Majorana Neutrinos: Project 8 News & Events Related News Closing in on the elusive neutrino - October 17, 2023 A new upper limit on the mass of neutrino - February 23, 2022 KATRIN cuts the mass estimate for the elusive neutrino in half - September 23, 2019