Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 13: Kosmische Strahlung I

T 13.3: Vortrag

Montag, 25. März 2019, 16:35–16:50, S13

A Simulation study for the Radio Upgrade of the Pierre Auger Observatory — •Tobias Wiegert — Karlsruhe Institut für Technologie, Germany

The study of air showers in our atmosphere provides information about the highest energy particles in our universe, as well as the highest energy accelerators in and out of our galaxy. In recent years, the detection of radio pulses from air showers is becoming increasingly important. Radio antennas measure radio pulses from a large part of the sky 24 hours a day, and are particularly suitable for measuring inclined air showers. As the shower inclines, the area illuminated by radio signals increases. In order to reconstruct such showers well enough, radio antennas must be distributed over a large area. The antenna signals provide information about the electromagnetic component of the shower which can be used in conjunction with the data of surface particle detectors to further characterize the shower and its composition. In view of this, the Pierre Auger Observatory will be extended with additional radio antennas on top of each of the 1660 surface detectors, resulting in a coverage of 3000 km2 and allowing the collaboration to determine the mass composition of cosmic rays arriving at high angles of inclination. This presentation provides an overview of the performance of the planned radio upgrade with antennas on a 1500 m grid, with special regard to the detection of (highly) inclined air showers. Particular focus is put on the minimum energy of the shower at which a detection with the antennas is possible, and its dependence on the zenith angle.