CURRENT SHEET CREATION BY A SUPER-ALFVENIC JET IN A BIPOLAR FIELD

Energy accumulation in a current sheet (CS) can occur during the injec tion of a fast plasma jet in a perpendicular magnetic field. A similar situation can occur in the solar corona when a flux of plasma appears under a magnetic arch. The flare can be produced at the CS disruption . The CS creation during plasma jet interaction with the magnetic fiel d is demonstrated by numerical MHD simulation. The choice of dimension less parameters Re, Re-m, beta, II, which are suitable for simulation of coronal phenomena, is discussed. When jet injection ceases, the CS evolution produces an unstable state and fast magnetic energy dissipat ion is observed.