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T: Fachverband Teilchenphysik

T 13: Cosmic Rays I

T 13.3: Vortrag

Montag, 15. März 2021, 16:35–16:50, Tm

Improved reconstruction of events recorded by the surface detector of the Pierre Auger Observatory — •Quentin Luce for the Pierre Auger collaboration — Karlsruhe Institute for Technologie, Karslruhe, Germany

For the last fifteen years, the Surface Detector of the Pierre Auger Observatory is continuously recording, at ground level, the footprint of Extensive Air Showers initiated by Ultra-High Energy Cosmic-Rays. Each triggered Water-Cherenkov detector participating in an event, provides two information: the time at which the first particles of the shower hit the detector and the signal produced by all the particles going through it. While from the timing information the arrival direction of cosmic-rays is reconstructed, its energy is estimated, using the signal information, with the reconstruction of the lateral profile and the determination of the shower size S(1000). With increase of statistics and the evolution of our knowledge, this reconstruction procedure is improving. The latest developments of the algorithms, i.e. correction of the azimuthal asymmetries, improvements of the lateral profile, used to reconstruct the properties of the cosmic-rays and the resolution associated to these developments are described in this presentation.