An optimization algorithm determines the optimal source surface radius for PFSS models by minimizing MSE against PSP radial field data from encounters 1-19 after backmapping, yielding increasing R_ss from solar minimum into cycle 25 ascending phase with improved open flux agreement.
Nick and Leisner, Andrew and Antiochos, Spiro K
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Solar wind composition depends strongly on source distance from the open-closed boundary, with enhanced variability and slow-wind signatures concentrated within ~25 Mm of the boundary.
citing papers explorer
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Optimization Algorithm for Determining the Source Surface Radius Based on Parker Solar Probe in situ Measurements from Encounters 1 to 19
An optimization algorithm determines the optimal source surface radius for PFSS models by minimizing MSE against PSP radial field data from encounters 1-19 after backmapping, yielding increasing R_ss from solar minimum into cycle 25 ascending phase with improved open flux agreement.
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Solar Wind Dependence on Source Distance from the Open-Closed Boundary
Solar wind composition depends strongly on source distance from the open-closed boundary, with enhanced variability and slow-wind signatures concentrated within ~25 Mm of the boundary.