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SYSF: Symposium Turbulence in Space and Fusion Plasmas
SYSF 1: Turbulence in Space and Fusion Plasmas
SYSF 1.3: Hauptvortrag
Mittwoch, 2. April 2025, 14:45–15:15, ZHG101
Turbulence in the young solar wind, results from Solar Orbiter and Parker Solar Probe — •Robert Wicks1, Utsav Panchal1, Julia Stawarz1, Stefan Lotz2, Du Toit Strauss3, and Amore Nel2 — 1Northumbria University, Newcastle, NE1 8ST, UK — 2South African National Space Agency, Hermanus, 7200, South Africa — 3Center for Space Research, North-West University, Potchefstroom, 2522, South Africa
Five years of observations by Parker Solar Probe (PSP) and Solar Orbiter (SO) have revolutionised our view of the inner heliosphere, challenged established theories of solar wind acceleration and heating, and demonstrated the essential interaction of kinetic plasma physics and large-scale structure. Unexpected revelations include the prevalence of ion beams, kinetic waves, and magnetic inversions commonly called switchbacks - all key ingredients of the reorganisation of energy that defines the young solar wind.
In this talk, we will review results from PSP and SO that show that the inner 0.4 au of the heliosphere plays a role as significant as the coronal source region in determining the properties of the solar wind. Here, the young solar wind undergoes processes that modify the structure of the plasma as energy is exchanged between electromagnetic, kinetic, and internal energy of particle populations. In particular, we will look at the initialisation of turbulence, the dissipation of energy and its impact on ion and electron distributions as the highly structured near-coronal wind expands and evolves into the solar wind.
Keywords: Turbulence; Solar Wind; Plasma; Dissipation