Research of influence of regular magnetic fields on flows in outer rings of galaxies

Now it is no doubt that there are large-scale magnetic fields in the spiral galaxies. Their evolution is described by the dynamo mechanism which is based on joint action of differential rotation and alpha-effect. For galaxies usually the no-z approximation is used, which takes into account that the galaxy disk is quite thin. It is necessary to study so-called outer rings of galaxies. Studying the magnetic fields there is quite difficult. Firstly, we cannot say that the outer ring is thinner than the radial lengthscale. Secondly, it is necessary to take into account the influence of the magnetic field on the turbulent motions. In this work we present the results of the magnetic field modeling, and also demonstrate the influence of the magnetic field on the turbulent motions of the interstellar medium.