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Slow wind belt in the quiet solar corona

Romoli, M.; Andretta, V.; Uslenghi, M. +16 more

The slow solar wind belt in the quiet corona, observed with the Metis coronagraph on board Solar Orbiter on May 15, 2020, during the activity minimum of the cycle 24, in a field of view extending from 3.8 R ⊙ to 7.0 R ⊙, is formed by a slow and dense wind stream running along the coronal current sheet, accelerating in the radial direction and reac…

Unexpected energetic particle observations near the Sun by Parker Solar Probe and Solar Orbiter

McComas, D. J.; Rodríguez-Pacheco, J.; Wimmer-Schweingruber, R. F. +6 more

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-driven shock waves. Although our knowledge of the origin, acceleration, and transport of these particles from close to the Sun through the interplanetary medium ha…