MHD-Effects Due to the Hypersonic Motion of a Cylindrical Body in the Magnetosphere of a Planet for Mutually Perpendicular Orientations of the Generatrix and Magnetic Field

MHD-effects associated with the movement of a weakly conducting cylindrical body in a planetary atmosphere are analyzed numerically. The longitudinal axis of the body is perpendicular to the direction of motion and the field lines of the planetary magnetic field. In the calculations we used data similar to those for the collision of the Shoemaker-Levy 9 comet with Jupiter. The simulation is developed for two atmospheric levels: H100 km (magnetic pressure number R_H1) and H280 km (R_H1). It is shown that the maximum strength of the induced magnetic field is 2–3 orders of magnitude greater than the planetary magnetic field. For small R_H, analytical expressions giving a fairly reliable estimate for the field strength in the shock-compressed space ahead of the body are obtained.