Observations of the 2019 April 4 Solar Energetic Particle Event at the Parker Solar Probe
Observations of the 2019 April 4 Solar Energetic Particle Event at the Parker Solar Probe
Abstract A solar energetic particle event was detected by the Integrated Science Investigation of the Sun (IS⊙IS) instrument suite on Parker Solar Probe ( PSP ) on 2019 April 4 when the spacecraft was inside of 0.17 au and less than 1 day before its second perihelion, providing an opportunity …