Volume 501 - 39th International Cosmic Ray Conference (ICRC2025) - Cosmic-Ray Indirect
Cosmic-ray air showers as detected with the shallow antenna of RNO-G
 RNO-G Collaboration, S. Agarwal, J.A. Aguilar, N. Alden, S. Ali, P. Allison, M. Betts, D. Besson, A. Bishop, O. Botner, S. Bouma, S. Buitink, R. Camphyn, J. Chan, S. Chiche, B. Clark, A. Coleman, K. Couberly, S. De Kockere, K. de Vries, C. Deaconu, P. Giri, C. Glaser, T. Glüsenkamp, H. Gui, A. Hallgren, S. Hallmann, J. Hanson, K. Helbing, B.L. Hendricks, J. Henrichs*, N. Heyer, C. Hornhuber, E. Huesca Santiago, K. Hughes, A. Jaitly, T. Karg, A. Karle, J. Kelley, C. Kopper, M. Korntheuer, M. Kowalski, I. Kravchenko, R. Krebs, M. Kugelmeier, R. Lahmann, M. Liu, M. Marsee, K. Mulrey, M. Muzio, A. Nelles, A. Novikov, A. Nozdrina, E. Oberla, B. Oeyen, N. Punsuebsay, L. Pyras, M.L. Ravn, A. Rifaie, D. Ryckbosch, F. Schlüter, O. Scholten, D. Seckel, M. Seikh, Z.S. Selcuk, J. Stachurska, J. Stoffels, S. Toscano, D. Tosi, J. Tutt, D.J. Van Den Broeck, N. van Eijndhoven, A.G. Vieregg, A. Vijai, C. Welling, D. Williams, P. Windischhofer, S. Wissel, R. Young and A. Zinket al. (click to show)
*: corresponding author
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Pre-published on: September 23, 2025
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Abstract
The Radio Neutrino Observatory Greenland (RNO-G) is an in-ice neutrino detector currently under construction on top of the Greenlandic ice sheet. Its primary goal is to achieve detection of neutrinos beyond energies of $\sim$ 10 PeV. Each station is equipped with log-periodic dipole antennas (LPDA) oriented toward the sky, which play a crucial role for background reduction in the neutrino search. Furthermore, these antennas enable the detection of radio emission from cosmic-ray air showers. Other experiments have already shown that the radio emission of air showers allows for precision measurements of cosmic-ray properties. Upon completion of its planned 35 stations, RNO-G will be covering an area of $\sim$ 50 $\mathrm{km}^2$, making it a medium-sized cosmic-ray detector as well. A unique feature of RNO-G is its high-altitude location ($\sim$ 3000 m), which allows the study of shower cores impacting the air/ice interface and further developing in the ice itself. Moreover, RNO-G provides an opportunity to study high-energy muons, created in cosmic-ray induced air showers.

In this contribution, we will present the final results of the first analysis utilizing the shallow LPDAs to detect radio emission from cosmic-ray air showers. We will show the analysis methodology and discuss the detected cosmic-ray events, including their reconstructed properties.
DOI: https://doi.org/10.22323/1.501.0288
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