Heavy Ion Heating Observed by Solar Orbiter HIS Across a Shock

Authors: B. L. Alterman (SwRI), Stefano Livi (SwRI, UMich), Christopher Owen (MSSL), Phillipe Louarn (IRAP), Roberto Bruno (INAF), A Fedorov (CESR), George Ho (APL), Susan Lepri (Umich), Jim Raines (Umich), Toni Galvin (UNH), Lynn Kistler (UNH), Frederic Allegrini (SwRI), Keiichi Ogasawara (SwRI), Peter Wurz (UBern), Ryan Dewey (UMich), Yeimy Rivera (UMich), Sarah Spitzer (UMich), Christopher Bert (UMich), Kylie Sullivan (UTSA), Tim Horbury (Imperial), Domenico Trotta (Imperial), Heli Hietala (Imperial), Milan Maksimovic (Paris Observatory), Andrew Dimmock (Swedish Institute of Space Physics), Yuri Khotyaintsev (Swedish Institute of Space Physics)

Heavy Ion Heating at a Shock Observed by Solar Orbiter (Poster) Shock injection processes depend on ion mass-per-charge and geometry. As such, the larger gyroradii of heavy ions as compared to protons impacts their heating. The Heavy Ion Sensor (HIS) Solar Orbiter measures heavy ions in the solar wind at a 30 second cadence. Combining this information with magnetic field measurements, we extract 3D velocity distribution functions (VDF) of He++ and O6+ and characterize their temperatures perpendicular and parallel to the local magnetic field. We then report on the evolution of this heating across a shock.