This is a cross sectional view (measured via heliosiesmology) so it shows how the differential rotation is mostly on the outer layers and the core spins more uniformly (the line in between these two rotation regimes is referred to as the taco line). The essential physics behind this is that the material near the equator is rotating faster than the material on the poles but because of hydrodynamics the rotation eventually balances out. The difference in rotation of all these charged particles has strong effects on the magnetic field.

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