Kiel Nano, Surface and Interface Science (KiNSIS)

ICE CUBE and the Discovery of High-Energy Cosmic Neutrinos (Prof. Dr. Francis Halzen, University of Wisconsin)

12.06.2018 ab 16:15

Hans - Geiger - Hörsaal (LS13 - R.52) des Physikzentrums


The IceCube project has transformed a cubic kilometer of natural Antarctic ice into a neutrino detector. The instrument detects more than 100,000 neutrinos per year in the GeV to PeV energy range. Among those, we have isolated a flux of high-energy cosmic neutri-nos. I will discuss the instrument, the analysis of the data, the signi-ficance of the discovery of cosmic neutrinos, and the recent multi-messenger observation of a flaring TeV blazar in coincidence with the IceCube neutrino alert IC170922. The large cosmic neutrino flux observed implies that the Universe’s energy density in high-energy neutrinos is the same as that in gamma rays, suggesting that the sources are connected and that a multitude of astronomical objects await discovery.

Prof. Dr. Francis Halzen (Wisconsin IceCube Particle Astrophysics Center and Department of Physics) University of Wisconsin–Madison


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