Remote And In Situ Detection of Energetic Electrons in The Solar Corona

The Parker Solar Probe (PSP) mission provides a unique opportunity for both remote and in situ measurements of solar activity very close to the Sun. This is an especially powerful approach when studying solar radio bursts, which can also be observed with modern ground-based radio interferometers such as the Low Frequency Array (LOFAR). We report here the combined remote and in situ detection of solar energetic electrons with the Low Frequency Array (LOFAR) radio telescope and PSP during its 17th perihelion encounter, on September 24, 2023. The LOFAR telescope observed a short but intense period of type III and type II bursts in metric wavelengths, while PSP was very well connected magnetically and successfully detected the related electron beams in situ. To understand the event in depth we have studied these observations, combining them with optical and EUV data, as well as modeling. In this work we employ a novel approach to processing 1 second time resolution LOFAR solar interferometry and apply a new method for automated source extraction and measurement. During the eruptive event we observe two distinct active emission regions in the solar corona, which are related to the radio bursts and the electron beams observed in situ. In our analysis, we measure key parameters of the electron beams both in situ and remotely to analyze their energies and determine their correspondence. We investigate the dynamics of the type II solar radio sources from LOFAR interferometry.