Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 13: Kosmische Strahlung I

T 13.2: Talk

Monday, March 25, 2019, 16:20–16:35, S13

Reconstruction of inclined Extensive Air Showers from transient radio pulses at the Pierre Auger Observatory — •Felix Schlüter — Karlsruhe Institute of Technology - Institut for Nuclear Physics (IKP)

The detection of transient radio pulses provides information on the electromagnetic component of Extensive Air Showers, e.g., information on the calorimetric energy deposit and longitudinal shower development in the earth's atmosphere. This has been demonstrated for vertical showers in the last decade by next-generation digital radio detectors such as the Auger Engineering Radio Array (AERA). For inclined air showers, radio detection can be combined with complementary measurements of the muonic shower component in hybrid observations to determine the mass composition of cosmic rays at the highest energies. The Radio Upgrade of the Pierre Auger Observatory will be dedicated to exploit these showers with 1660 hybrid detector stations. A reconstruction of the radio signal from inclined air showers has to account for asymmetries in the lateral distribution arising from geometrical effects as well as from the superposition of different emission mechanisms. One proposed model corrects for all asymmetries and describes the radio signal at ground with a rotationally symmetric lateral distribution function. In this talk, this model will be further refined using a greater understanding of the emission processes. With this model shower quantities such as the shower core or electromagnetic energy will be reconstructed for AERA observations.