a Dipartimento di Fisica, Università di Pisa, 56100, Pisa, Italy
b Dipartimento di Astronomia e Scienze dello Spazio, Università di Firenze, 50125, Firenze, Italy
Abstract:
Simulations of the evolution of kink modes in line-tied coronal loops are presented which demonstrate the occurrence of magnetic reconnection in the non-linear stage of the instability. In loops which do not carry a net axial current (and are confined by a potential purely axial field) the reconnection is limited to the initial current-carrying channel and no overall loss of confinement is observed. In loops which carry a net current on the other hand, reconnection progressively involves field lines at greater and greater distances from the axis and even regions where the field was initially potential, leading to a total disruption of the magnetic field topology.