Sun: activity

Multi-spacecraft observations of near-relativistic electron events at different radial distances

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

*Context.* Solar Orbiter, launched in February 2020, started its cruise phase in June 2020, in coincidence with its first perihelion at 0.51 au from the Sun. The in situ instruments onboard, including the Energetic Particle Detector (EPD), operate …

First year of energetic particle measurements in the inner heliosphere with Solar Orbiter's Energetic Particle Detector

*Context.* Solar Orbiter strives to unveil how the Sun controls and shapes the heliosphere and fills it with energetic particle radiation. To this end, its Energetic Particle Detector (EPD) has now been in operation, providing excellent data, for …