The modeling of magnetoplasma structures in the solar wind

Axisymmetric MHD model of the solar wind is constructed, which allows us to study the spatial distribution of the magnetic field and plasma characteristics at radial distances from 20 to 400 radii of the Sun in a wide range of heliolatitudes. Self-consistent solutions for the magnetic field, plasma and current densities in the solar wind depending on the phase of the solar cycle are obtained. It is shown that during the dominance of the dipole magnetic component in the solar wind, a heliospheric current sheet (HCS) is formed, being the part of a system of longitudinal and transverse currents symmetric in the Northern and Southern hemispheres. As the relative contribution of a quadrupole component to the total magnetic field of HTS increases, the last one becomes to be cone-shaped; at high latitudes of the opposite hemisphere, a second conical HTS appears, its opening angle increases. The model describes a smooth transition from the fast solar wind at high heliolatitudes to the slow solar wind at low heliolatitudes and the steepened profiles of main solar wind characteristics with the increased radial distance from the Sun