Magnetic Reconnections in the Presence of Three-Dimensional Magnetic Nulls and Quasi-Separatrix Layers

Three-dimensional (3D) magnetohydrodynamic simulations are carried out to explore magnetic reconnections in the presence of 3D nulls and quasi-separatrix layers (QSLs). The initial fields created by superposing uniform vertical two different magnitudes on a linear force-free field. interior numerical box contains with separatrix domes separated quasi-separator (or hyperbolic flux tube) QSLs. In first simulation, field is so large that located at low heights separate. Initially unbalanced Lorentz forces drive rotational flows form strong electric currents torsional fan reconnection weak QSL tube. Flipping or slipping lines observed both cases. second weaker larger domes, surfaces meet central their rotation drives stronger than before.