Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 8: Neutrino astronomy I

T 8.3: Talk

Monday, March 30, 2020, 17:05–17:20, H-HS VI

Up-going simulations of neutrino induced Extensive Air Showers with the Fluorescence Detector of the Pierre Auger Observatory* — •Ioana Caracas for the Pierre Auger collaboration — Bergische University Wuppertal, Germany

The Pierre Auger Observatory is performing a follow-up of the recent ANITA observations of up-going cosmic ray-like showers with energies around 0.1-1 EeV. These anomalous events could be seen within the Fluorescence Detector (FD) of the observatory. As the exposure of the FD for 14 years of data taking is exceeding the exposure of ANITA by a factor of at least 100, it is strongly believed the current research will be able to either confirm or infirm the recent observations.

Simulations of up-going extensive air showers with elevation of more than ≈ 20 degrees below the horizon represent the first step in this search. The extensive air showers are simulated using CORSIKA with primary energies in the range of 10¹⁷ - 10^18.5 eV; three different primaries are simulated: protons, electrons and tauons, as the main candidates resulted from a neutrino charged current (CC) interaction. The detector response is simulated using the Offline software of the collaboration. These simulations will be used to estimate the sensitivity of the FD to these evens, to optimize the selection of events in real data and reduce the chance of false positives, as well as to provide insight into the nature of these events. Preliminary results of these simulations and estimated exposures will be presented and discussed.

*Gefördert durch die BMBF Verbundforschung Astroteilchenphysik (Vorhaben 05A17PX1)