Kink Oscillations of Coronal Loops with a Longitudinal Electric Current

Oscillations of coronal loops with electric currents from one base to another are studied. The energy of longitudinal currents can be a source of energy for loop flares (Alfven and Carlqvist, 1967). A simplified model of a loop in the form of a composite cylindrical magnetic tube containing a shell with a potential azimuthal magnetic field is considered for the theoretical study of oscillations of loops with longitudinal currents. The dispersion features of the tube natural kink oscillations are considered based on numerical calculations.