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Keywords = Astroneu

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7 pages, 2837 KiB  
Proceeding Paper
Results and Prospects of the Hellenic Open University Air Shower Array
by Stavros Nonis, Antonios Leisos and Apostolos Tsirigotis
Phys. Sci. Forum 2023, 7(1), 7; https://doi.org/10.3390/ECU2023-14015 - 15 Feb 2023
Viewed by 1316
Abstract
Astroneu is an array of autonomous extensive air shower detection stations deployed at the Hellenic Open University (HOU) campus on the outskirts of Patras in Western Greece. In the first phase of operation, nine scintillators detectors and three radio frequency (RF) antennas have [...] Read more.
Astroneu is an array of autonomous extensive air shower detection stations deployed at the Hellenic Open University (HOU) campus on the outskirts of Patras in Western Greece. In the first phase of operation, nine scintillators detectors and three radio frequency (RF) antennas have been installed and operated at the site. The detector units were arranged in three autonomous stations each consisting of three scintillator detectors (SDM) and one RF antenna. In the second phase of operation, three more antennas were deployed at one station in order to study the correlation of the RF signals from four antennas subject to the same shower event. In this report, we present the standard offline SDM-RF data and simulations analysis, the main research results concerning the reconstruction of the EAS parameters as well as the prospects of a new compact array that will be deployed by 2023. Full article
(This article belongs to the Proceedings of The 2nd Electronic Conference on Universe)
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16 pages, 16584 KiB  
Article
Performance of the RF Detectors of the Astroneu Array
by Stavros Nonis, Antonios Leisos, Apostolos Tsirigotis, Ioannis Gkialas, Kostas Papageorgiou and Spyros Tzamarias
Universe 2023, 9(1), 17; https://doi.org/10.3390/universe9010017 - 27 Dec 2022
Cited by 1 | Viewed by 1487
Abstract
Since 2014, the university campus of Hellenic Open University (HOU) has hosted the Astroneu array, which is dedicated to the detection of extensive air showers (EAS) induced by high-energy cosmic rays (CR). The Astroneu array incorporates 9 large particle scintillation detectors and 6 [...] Read more.
Since 2014, the university campus of Hellenic Open University (HOU) has hosted the Astroneu array, which is dedicated to the detection of extensive air showers (EAS) induced by high-energy cosmic rays (CR). The Astroneu array incorporates 9 large particle scintillation detectors and 6 antennas sensitive to the radio frequency (RF) range 1–200 MHz. The detectors are adjusted in three autonomous stations operating in an environment with a strong electromagnetic background. As shown by previous studies, EAS radio detection in such environments is possible using innovative noise rejection methods, as well as advanced analysis techniques. In this work, we present the analysis of the collected radio data corresponding to an operational period of approximately four years. We present the performance of the Astroneu radio array in reconstructing the EAS axis direction using different RF detector geometrical layouts and a technique for the estimation of the shower core by comparing simulation and experimental data. Moreover, we measure the relative amplitudes of the two mechanisms that give rise to RF emission (the Askaryan effect and geomagnetic emission) and show that they are in good agreement with previous studies as well as with the simulation predictions. Full article
(This article belongs to the Special Issue Astroparticle Physics)
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10 pages, 1884 KiB  
Article
Hybrid Detection of High Energy Showers in Urban Environments
by Antonios Leisos, Stavros Nonis, Apostolos Tsirigotis, George Bourlis, Kostas Papageorgiou, Ioannis Gkialas, Ioannis Manthos and Spyros Tzamarias
Universe 2019, 5(1), 3; https://doi.org/10.3390/universe5010003 - 22 Dec 2018
Cited by 10 | Viewed by 2864
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 [...] Read more.
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. Full article
(This article belongs to the Special Issue Selected Papers from the 7th International Conference on New Frontiers in Physics (ICNFP 2018))
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