Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 19: Cosmic Ray 1

T 19.2: Vortrag

Montag, 21. März 2022, 16:35–16:50, T-H32

Analysis of laser shots of the Aeolus satellite in the Pierre Auger Observatory — •Felix Knapp for the Pierre Auger collaboration — Karlsruher Institut für Technologie

The Pierre Auger Observatory is a large-scale facility for the investigation of ultra-high-energy cosmic rays. It uses a combination of surface detectors and fluorescence telescopes to measure extensive air showers initiated by cosmic-ray particles. Aeolus is an ESA-operated satellite with the mission of conducting global wind profile measurements. To this end, a UV-lidar is employed which emits laser beams towards Earth. When passing over the Pierre Auger Observatory, light that scatters off the laser beam in the atmosphere is detected by the Fluorescence Detector of the Observatory. This allows for a reconstruction of the laser tracks from the Fluorescence Detector data for several overpasses each year. These laser tracks provide a unique opportunity for analyses of the atmosphere above the Observatory.

In this presentation, we will explain the process of reconstructing laser tracks from data taken by the fluorescence telescopes and give an overview of the possible application for aerosol measurements. Furthermore, some results of the laser reconstruction are shown, including the most recent overpasses under a special orbital configuration of the satellite.