First near-relativistic solar electron events observed by EPD onboard Solar Orbiter

Context. Solar Orbiter, launched in February 2020, started its cruise phase June coincidence with first perihelion at 0.51 au from the Sun. The situ instruments onboard, including Energetic Particle Detector (EPD), operate continuously during enabling observation of solar energetic particles. Aims. In measurements near-relativistic electron events observed July 2020 by EPD are analyzed and origins conditions for interplanetary transport these particles investigated. Methods. Electron observations keV energies to range were combined detection type III radio bursts extreme ultraviolet (EUV) multiple spacecraft order identify origin events. anisotropies timing as well plasma magnetic field environment evaluated characterize conditions. Results. All clearly associated bursts. EUV jets also found association all them except one. A diversity time profiles pitch-angle distributions was observed. Different source locations different connectivity likely involved. 11 event detected Wind, separated 107 degrees longitude Orbiter. For 22 event, Suprathermal Proton sensor allowed us not only resolve injections low energies, but it provided an exceptionally high resolution a very anisotropic beam. This, together local Langmuir waves suggest good connection event. This scenario is challenged high-frequency occultation burst nominally non-direct source; therefore, requires further investigation.