Repulsive effects in steady axisymmetric fields

In this paper the repulsive effects in the Kerr and Kerr--Newman fields arediscussed. The contributions made by all parameters of the fields and testparticles to the repulsive effects are also discussed, and the accretiveeffect on interstellar dust, i.e. the distribution of dust is calculated.The discussion is also carried out on the slow rotation of the Kerr field inwhich the effect is related to the positions and velocities of the particlesand the orientations of their trajectories as well.