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T: Fachverband Teilchenphysik
T 13: Cosmic Rays I
T 13.1: Gruppenbericht
Montag, 15. März 2021, 16:00–16:20, Tm
The Pierre Auger Observatory – Status, Results, Prospects* — •Michael Schimp for the Pierre Auger collaboration — Bergische Universität Wuppertal, Gaußstr. 20, 42119 Wuppertal
The Pierre Auger Observatory is the world’s largest observatory for ultra-high energy cosmic rays (UHECRs), covering an instrumented area of 3000 km2. Its 1660 Surface Detector (SD) stations and 27 Fluorescence Detector (FD) telescopes are designed to collect data of unprecedented statistics and quality.
Recent results have revealed new features in the energy spectrum of UHECRs, while their mass composition is best described as mixed with increasing primary particle masses towards the highest energies. Additionally, several significant large- and medium-scale anisotropies have been established. Searches for neutrinos and photons have yielded the most significant constraints on their fluxes in a substantial energy and directional range. Furthermore, the data indicate that there are significantly more muons produced in air showers than expected in state-of-the-art simulations. About 1600 elves, lightning-related luminous events in the ionosphere, have been detected with the FD, making it a unique contributor to high-energy atmospheric physics research.
An upgrade of the Pierre Auger Observatory, called AugerPrime, is nearing completion. It will add scintillation and radio detectors together with improved electronics to the SD stations. AugerPrime will improve particle identification and therefore enhance the overall UHECR mass composition sensitivity for the full-duty-cycle SD.
*Supported by BMBF Verbundforschung Astroteilchenphysik