Reconstruction of cosmic ray air showers with Tunka-Rex data using template fitting of radio pulses

Understand

We present an improved method for the precise reconstruction of cosmic ray air showers above $10^{17}$ eV with sparse radio arrays.

• The method is based on the comparison of predictions for radio pulse shapes by CoREAS simulations to measured pulses.
• We applied our method to the data of Tunka-Rex, a 1 km$^2$ radio array in Siberia operating in the frequency band of 30-80 MHz.
• Tunka-Rex is triggered by the air-Cherenkov detector Tunka-133 and by scintillators (Tunka-Grande).