Linear source self-action in the space-time of a thick cosmic string

The regularized self-action energy for a linear source of electric and magnetic fields in the space-time of a thick cosmic string is calculated. It is shown that, at large distances from the string, the relevant expression transforms into that for the self-action energy in the space-time of an infinitely thin string. The introduction of the string finite thickness noticeably changes the dependence of the regularized energy on the deficit of the angle and geodesic distance between the string and the source.