SH035-05
Heavy Ion Sensor on Solar Orbiter: Linking the Solar Wind and the Sun

Monday, 14 December 2020: 04:16
Virtual
Stefano A Livi1, Susan T Lepri2, Jim M Raines2, Antoinette Galvin3, Lynn M Kistler4, Frederic Allegrini5, Keiichi Ogasawara1, Benjamin L Alterman6, Michael R Collier7, Timothy Stubbs8, Christopher John Owen9, Philippe Louarn10, Andrei Fedorov10, Roberto Bruno11, Timothy Simon Horbury12, Helen O'Brien12, Vincent Evans13 and Virginia Angelini13, (1)Southwest Research Institute, San Antonio, TX, United States, (2)University of Michigan, Ann Arbor, MI, United States, (3)University of New Hampshire Main Campus, Durham, NH, United States, (4)Univ New Hampshire, Durham, NH, United States, (5)Southwest Research Institute San Antonio, San Antonio, TX, United States, (6)Southwest Research Institute, San Antonio, MI, United States, (7)NASA/GSFC, Greenbelt, MD, United States, (8)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (9)University College London, Mullard Space Science Laboratory, Dorking, United Kingdom, (10)IRAP, CNRS, Toulouse, France, (11)INAF-IFSI, Rome, Italy, (12)Imperial College London, Department of Physics, London, SW7, United Kingdom, (13)Imperial College London, Department of Physics, London, United Kingdom
Recorded Presentation
Abstract:
The HIS sensor, part of the SWA suite onboard Solar Orbiter, has been designed and optimized to study heavy ions in the solar wind, suprathermal particles, and pickup ions in the range 0.5 to 75keV/e. This instrument will allow for unprecedented data collection of particle characteristics near the Sun at various heliolatitudes during both the quiet and active phases of the solar cycle. The close proximity and the quasi-corotation will allow for determination of the source regions on the Sun for the observed events. Data collected during the early cruise phase of the mission highlight the richness of new information that have been gathered and will continue to be gained in the course of the next 10 years. In particular we will show how heavy ion data enable us to link events on the surface of the Sun with structures in the interplanetary medium; determine the extent of gravitational settling in the expansion region of the solar wind; characterize the heating and dissipation mechanisms at shocks at various radial distances and latitudes; and identify the mechanisms that heat thermal solar wind ions.
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