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Three-dimensional magnetohydrodynamic description of the process of impingement of a solar wind rotational discontinuity on the Earth’s bow shock

Research paper by E. A. Pushkar

Indexed on: 03 May '11Published on: 03 May '11Published in: Fluid Dynamics



Abstract

The impact of the plane front of a rotational discontinuity, which has a circular polarization and propagates in the solar wind along the Sun-Earth radius, on the Earth’s bow shock and the magnetosheath is first investigated in the three-dimensional formulation. The most characteristic values of the solar wind parameters and the interplanetary magnetic field strength in the Earth’s orbit are considered. The global three-dimensional pattern of the flow is constructed as a function of the latitude and longitude of points on the bow shock and the intensities of all the waves appearing in the interaction which significantly depend on the angle of rotation of the magnetic field are found. The solution obtained is necessary to interpret the solar wind parameters and the interplanetary magnetic field measured by spacecraft located in the neighborhood of the Lagrange point and the Earth’s magnetosphere.