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Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 51: Experimental Techniques in Astroparticle Physics 2

T 51.1: Vortrag

Dienstag, 22. März 2022, 16:15–16:30, T-H36

Comparison of Sky Models of the Galactic Radio Background for the Calibration of Radio Arrays — •Max Büsken for the Pierre Auger collaboration — Institut für ExperimentelleTeilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, Deutschland

The Pierre Auger Observatory is the largest ground-based experiment for the detection of ultra-high energy cosmic rays. New radio antennas will be installed on each of the surface detector stations as part of the AugerPrime upgrade. This will allow to study the mass composition of cosmic rays arriving with large inclination angles.

Performing an accurate calibration and having a good understanding of its uncertainties is crucial for any physics analysis. Conducting a calibration campaign in the field with a reference antenna is not feasible on this large scale. Therefore the absolute calibration of the radio antennas will be performed using the diffuse galactic radio emission as an absolute reference, as it is the most dominant source of background. I will present a comparison of sky models that predict the galactic emission received from the whole sky. I will show how large the uncertanties on these predictions are and illustrate, what this means for radio experiments relying on this calibration method.

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