ИСТИНА

IMF plays significant role for Mercury, as this planet is located close to the Sun and obtains a week own magnetic field. At the Mercury orbit the radial IMF component dominates. The topology of Mercury magnetosphere for strong radial IMF leads to formation of a quasi-neutral line in one of the cusps and neutral point of magnetic field in the other. FTEs generation may be associated with this quasi-neutral line. Thus, depending on the sign of the radial IMF component, FTEs may be connected with one or the other cusp. This result was supported by MESSENGER observations.