Solar Energetic Particles (SEPs) from suprathermal (few keV) up to relativistic (~few GeV) energies are accelerated at the Sun in association with solar flares and coronal mass ejection (CME)-driven shocks. In this review, we present important recent results of the study of Interplanetary CMEs and shocks in relation to energetic particle acceleration and transport, taking advantage of...
One of the main objective of the Solar Orbiter mission is concerned with the production of energetic particles in the heliosphere, in particular with understanding how particles are released from their acceleration sources and distributed in space and time in the heliosphere. For energetic electrons, part of this question can be addressed by combining X-ray and radio observations. Indeed,...
We report observations of <500 keV/nucleon suprathermal (ST) H, He, O, and Fe ions in association with several crossings of the heliospheric current sheet that occurred near perhelia during PSP encounters 7-18. In particular, we compare and contrast the ST ion time-intensity profiles, velocity dispersion, pitch-angle distributions, spectral forms, and maximum energies during the three HCS...
We analyze two solar flares—an X-class flare from October 28th, 2021, and an M-class flare from November 29th, 2020—to investigate the dynamic changes in thermal energy during their evolution. Our study uses data from several sources, including the Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO), the X-ray Telescope (XRT) on Hinode, and the Spectrometer/Telescope for...
