Frequency-optimised radio air arrays for air-shower detection

The radio detection technique has successfully been applied to the measurement of cosmic-ray induced air showers with energies above 1016 eV. A majority of these measurements are performed
in the frequency band of 30-80 MHz, by the existing radio air-shower experiments. Recent results
of a simulation study with CoREAS show that the optimisation of the frequency band improves
the signal-to-noise ratio. This in turn lowers the energy threshold of detection by an order of
magnitude. This talk will focus on the universal application of such a frequency optimisation
for all future radio air-shower arrays, which will improve the performance of these future arrays.
For this, a simulation study performed for the locations of IceTop, GRAND and the Pierre Auger
Observatory using air showers generated by cosmic rays, gamma-rays and neutrinos is utilised.