Abstract
The Astroneu array comprises 9 large charged particle detectors and 3 RF antennas arranged in three autonomous stations operating at the University Campus of the Hellenic Open University in the city of Patras. Each station of the array detects extensive air showers with primary energy threshold of about 10 TeV, while double station coincidence events select showers with energies higher than 10 3 TeV. In such an environment, the radio detection of air showers is challenging. The RF signals besides being extremely weak they also suffer from strong human made electromagnetic noise. In this work, we present the analysis of double station coincidence events and we study the correlation of the RF data with the particle detectors data. We use the experimental information from the particle detectors and the antennas to select very high energy showers and we compare the timing of the RF signals with the timing of the particle detector signals as well as the strength of the RF signals with the simulation predictions.
Highlights
Cosmic air showers are usually detected using large arrays of particle and fluorescence detectors.In the sixties, a new, complementary method of detecting cosmic ray showers was proposed, using theRadio Frequency (RF) signature caused by the electromagnetic interactions of the shower charged particles
The Extensive Air Showers (EAS) RF signals were detected for the first time in 1965, but interest in this method of detection was soon subsided because of inadequate technology
In this work we study the potential of a small scale hybrid cosmic ray telescope (Astroneu array) to detect the RF signature of EAS when operating in urban sites with strong electromagnetic noise
Summary
Cosmic air showers are usually detected using large arrays of particle and fluorescence detectors. By combining the experimental information from particle detectors and radio antennas it was demonstrated that air showers could be RF detected, despite the high radio background of the site. In this work we study the potential of a small scale hybrid cosmic ray telescope (Astroneu array) to detect the RF signature of EAS when operating in urban sites with strong electromagnetic noise. We evaluated the performance of the Astroneu array in detecting and reconstructing EAS using the charged particle detectors [9], while the RF component of the EAS was studied using noise filters, timing and signal polarization [10].
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