Recent Results from the IceCube Neutrino Observatory

The IceCube South Pole Neutrino Observatory uses atmospheric and astrophysical neutrino sources to perform a variety of particle physics and astrophysics from GeV to PeV/EeV neutrino energies, inaccessible to most terrestrial experiments. Instrumenting a cubic-kilometre of subglacial ice in Antarctica with Cherenkov radiation-sensitive optical modules, IceCube searches for the most energetic astrophysical neutrino sources in the universe, down to neutrino oscillation parameters through measurements of atmospheric neutrinos. To date, IceCube has performed world-leading measurements of some neutrino oscillation mixing parameters, which will only improve with the instrumentation of IceCube Upgrade in 2025/2026. 

Beyond the atmosphere, identification of neutrino sources like the active galactic nucleus NGC-1068 and the Milky Way are leading the way into an era of inter-experiment multi-wavelength astrophysics known as “Multi-Messenger Astronomy”. Further planned expansions (IceCube-Gen2) will see a factor 7 increase in volume and a factor 4 increase in per-module sensitivity to enable measurement of multi-EeV neutrinos and answer fundamental questions about our Universe such as the Greisen–Zatsepin–Kuzmin (GZK) limit. In this talk I will highlight some of IceCube's latest results, including detection of candidate charged-current tau neutrino events, oscillation searches, the up-to-date measurement of the GZK flux, and the future of high and low ennergy neutrino searches with the IceCube Upgrade and Gen-2.