Volume 501 - 39th International Cosmic Ray Conference (ICRC2025) - Solar & Heliospheric Physics
Observation of Radio Solar Flares in RNO-G
M.F.H. Seikh*,  RNO-G Collaboration, S. Agarwal, J.A. Aguilar, N. Alden, S. Ali, P. Allison, M. Betts, 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, A. Zink and D. Bessonet al. (click to show)
*: corresponding author
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Pre-published on: September 24, 2025
Published on:
Abstract
The Radio Neutrino Observatory - Greenland (RNO-G) is a multipurpose experiment that extends its scope to sciences like solar heliophysics and radioglaciology beyond its primary focus to detect ultra-high energy neutrinos and cosmic rays. In this contribution, we discuss the recent observations of solar flares in RNO-G. The nanosecond-sampling of the recorded snapshots allows to study the radio emission with finer resolution in the time-domain compared to dedicated solar observatories. Additionally, we highlight RNO-G's ability to utilize the known positions of the Sun to calibrate the detector and achieve sub-degree reconstruction precision. The summer 2022 and 2023 datasets used in this search came from 7 out of the planned 35 radio-receiver stations, each equipped with 24 antennas sensitive to impulsive radio signals in the 80-700 MHz bandwidth. Further confirmations on signal excesses during solar flares were obtained through coincidence measurements with the Callisto network and the SWAVES satellite. As RNO-G expands, it will continue to refine its capabilities, offering high-resolution solar flare data and precise cosmic ray and neutrino reconstruction. With data from the 2024 solar maximum still to be fully analyzed, RNO-G has the potential to provide valuable insights into both astrophysical and solar phenomena, positioning it as a versatile and impactful detector for multi-disciplinary science.
DOI: https://doi.org/10.22323/1.501.1365
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