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Non-force-free extrapolation of solar coronal magnetic field using vector magnetograms
Gary, G. A.; Hu, Qiang; Büchner, J. +2 more
We report our recent improvement in non-force-free extrapolation of coronal magnetic field, using vector magnetograms. Based on the principle of minimum (energy) dissipation rate (MDR), a generally non-force-free magnetic field solution is expressed as the superposition of one potential field and two (constant-[alpha]) linear force-free fields, wi…
Analytical description of electric currents in the magnetosheath region
Veselovsky, I. S.; Vandas, M.; Romashets, E.
Volume currents in the magnetosheath region are calculated within the framework of a new analytical model. Magnetic field structure in the region is found, satisfying boundary conditions on the bow shock and the magnetopause, and then volume currents are calculated using the Maxwell equation. Surface bow shock and magnetopause currents are calcula…