Würzburg 2018 – scientific programme
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T: Fachverband Teilchenphysik
T 93: Experimentelle Methoden der Astroteilchenphysik V
T 93.5: Talk
Thursday, March 22, 2018, 17:30–17:45, Z6 - SR 2.013
Measurement of radio emission induced by ultra-high energy cosmic rays at energies above 1 EeV with the Pierre Auger Observatory — •Florian Briechle, Martin Erdmann, and Felix Schlüter for the Pierre Auger collaboration — III. Physikalisches Institut A, RWTH Aachen University, Deutschland
Radio emission of extensive air showers is used to reconstruct properties of the ultra-high energy cosmic rays. Owing to the area of 17 km2 covered by the radio array AERA of the Pierre Auger Observatory, sufficient event statistics for measurements above 1 EeV have been recorded in recent years. Especially interesting are air showers at large zenith angles because they induce sizable footprints covering many radio stations. New challenges in reconstructing these showers arise from the superposition of the two emission mechanisms leading to the radio signal. This leads to an asymmetric energy fluence distribution on ground, even more so for air showers at large zenith angles. This distribution needs to be described with high precision to enable a high quality reconstruction of the properties of the cosmic ray.
We discuss the shower reconstruction with emphasis on the energy estimation where the aim is to provide an absolute energy measurement of the primary cosmic ray from radio techniques exclusively.