Radio Detection of Cosmic Rays with the IceCube Surface Array Enhancement

The surface array of the IceCube Neutrino Observatory, IceTop, measures cosmic rays in the PeV-EeV primary energy range. Stations comprising radio antennas and scintillation detectors will be added to enhance the existing surface detectors. A prototype station, consisting of eight scintillation detectors and three radio antennas, has been in operation in its final design since the beginning of 2023. Radio signals from air showers are measured by antennas that are read-out when the trigger condition from the scintillation detectors is met. This contribution reports on air shower coincidence measurements of these radio antennas with IceTop. Geometric shower parameters reconstructed from the radio antennas are compared with those from IceTop to determine the angular resolution. Since the electromagnetic radio signal from cosmic-ray showers is sensitive to the longitudinal development of the shower, radio observations can provide a measurement of the mass-sensitive parameter, Xmax, the depth of shower maximum and the primary cosmic-ray energy. A chi-squared minimization technique based on a comparison of observations to simulations was used to estimate the respective parameters. ... mehrWe also present details on the two new stations that were tested, deployed and commissioned with their respective data acquisition systems during the latest field season at the South Pole.