Speaker
Description
To detect ultra-high-energy neutrinos, experiments such as ARA and RNO-G target the radio emission induced by these particles as they cascade in the ice, using deep in-ice antennas at the South Pole or in Greenland. In this context, it is essential to first characterize the in-ice radio signatures from cosmic ray induced particle showers, which constitute a primary background for neutrino detection, but also represent the fist in-situ detection of astroparticles with in-ice radio antennas. This characterization will thus validate the detection principle and aids in calibration. To achieve this goal, we used FAERIE, the “Framework for the simulation of Air shower Emission of Radio for in-Ice Experiments”, that combines CoREAS and GEANT4 to simulate the radio emission of cosmic ray showers deep in the ice. Using this innovative tool we analyze in-ice radio signatures of cosmic-ray showers, including polarization, frequency spectrum, and radiation energy, as well as their dependence on shower parameters. These insights will facilitate the first cosmic-ray detections and improve cosmic-ray/neutrino discrimination.