# Cosmic Ray RF detection with the ASTRONEU array

## TL;DR

This study demonstrates the capability of the ASTRONEU array to detect cosmic ray air showers through radio frequency signals amidst urban electromagnetic noise, supporting future large-scale cosmic ray detection and calibration efforts.

## Contribution

The paper introduces a novel RF detection method for cosmic rays using the ASTRONEU array, showing its effectiveness in urban environments and laying groundwork for larger arrays.

## Key findings

- Cosmic showers were successfully detected using RF signals.
- The detection method remains effective despite high electromagnetic background.
- Results support the array's use for future cosmic ray studies.

## Abstract

Results will be shown from the ASTRONEU array developed and operated in the outskirts of Patras, Greece. An array of 9 scintillator detectors and 3 antennas were deployed to study Extensive Air Showers (EAS) as a tool for calibrating an underwater neutrino telescope, possible other applications in muon tomography, education purposes, and last but not least, the detection of air showers via their electromagnetic signature. This is the first stage of a total of 24 scintillator counters and 6 RF antennas to complete the array. In this work, results with regard to the electromagnetic detection of showers will be shown. The method of operation and analysis will be presented. The purpose of this project was to demonstrate the adequacy of the method to detect cosmic events even in the presence of high urban electromagnetic background, using noise filters, timing, signal polarization, and eventual comparison with well understood event reconstruction using the scintillator detectors. The results indicate that cosmic showers were detected and the method can be used for the complete array.