,,,- Space Research Centre of Polish Academy of Sciences, Warsaw,Poland
In the following study, we aim to investigate the possible impacts of a Solar eclipse on ionospheric conditions. On October 25th, 2022, and March 29th, 2025, a partial Solar eclipse was visible from Borowiec, Poland. In both cases, the LOFAR observations were carried out to study the ionospheric conditions during their occurrence. The LOFAR PL610 station was used in a single mode and continuously observed strong radio sources prior to, during, and after both eclipses.
In case of an eclipse that occurred in October 2022, the observations reveal the diffraction pattern seen on the signal intensity image for CasA, a strong astronomical radio source. No similar patterns were observed for other strong sources, such as CygA or VirA. On the other hand, observations of the Sun show a decrease in visibility of recorded structures during the solar eclipse. In this case, the decreased signal intensity could be caused by partial coverage of the Solar disc.
No evident similar ionospheric effects were observed, which may be related to changes in the ionosphere resulting from the solar eclipse on March 29, 2025. However, the findings presented in this work, linking ionospheric effects observed by LOFAR during the eclipses, should be further investigated.
How to cite: Pożoga, M., Ciechowska, H., Matyjasiak, B., Grzesiak, M., Przepiórka-Skup, D., Phung, T., Tomasik, Ł., Hanna Rothkaehl, H., and Wronowski, R.: Ionospheric effects of solar eclipse observed with PL610 LOFAR station, EGU General Assembly 2026, Vienna, Austria, 3–8 May 2026, EGU26-17912, https://doi.org/10.5194/egusphere-egu26-17912, 2026.
