Physikalisches Kolloquium

Wintersemester 2023/2024

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Kirchhoff-Institut für Physik, Otto-Haxel-Hörsaal
Friday 17:15

27.10.2023 17:00
Prof. Dr. Karl-Heinz Kampert, Astroteilchenphysik, Bergische Universität Wuppertal
KIP, INF 227, Hörsaal 1

Cosmic Rays with energies beyond 1020 eV are regularly observed by the Pierre Auger Observatory covering an area of 3000 km2. They are known to be of extragalactic origin but despite enormous progress being made in recent years, Nature has not fully revealed their sources, yet. However, a simultaneous description of the observed energy spectrum, mass composition and arrival directions suggests powerful nearby Starburst Galaxies as a key contributor -- an observation that is independently supported by multi-messenger observations involving high energy photons and neutrinos. The enormous particle energies arriving at Earth can also be used to probe new particle and fundamental physics and a few examples will be presented.