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T: Fachverband Teilchenphysik

T 102: Cosmic rays V

T 102.6: Vortrag

Freitag, 3. April 2020, 12:15–12:30, L-3.001

Studies of the energy resolution and bias in the Pierre Auger Observatory — •Adrianna García, Thomas Bretz, Paulo Ferreira, Thomas Hebbeker, and Julian Kemp for the Pierre Auger collaboration — III. Physikalisches Institut A, RWTH Aachen University

The Pierre Auger Observatory is the largest experiment built for the study of cosmic rays (CRs). It consists of a hexagonal array of 1660 water-Cherenkov detector stations and 27 fluorescence telescopes located at five sites around the array to record hybrid signals from the extensive air showers produced by CRs during their interaction with the Earth’s atmosphere.

Monte Carlo simulations of primary CRs have been performed using CORSIKA. The resulting showers are processed by the standard simulation and reconstruction framework Off line of the Pierre Auger Observatory, which includes the detector simulations and the data reconstruction algorithm. Two different simulated data sets were generated by applying different cuts taking into account two different detection methods. The first data set contains events that were recorded just by the surface detector, and the second one includes the hybrid events recorded by the surface detectors and, at least, two fluorescence telescopes simultaneously.

The discrepancies in the energy reconstruction of the observatory between the two different detection modes (surface detector only and hybrid mode) have been studied in order to correct for the possible bias in the cosmic ray primary energy. Preliminary results are going to be presented.