Generation of B y in Earth’s magnetotail with the effect of IMF B y during southward interplanetary magnetic field

Abstract

Based on the three-dimensional compressible resistive MHD models, the Earth’s dipole magnetic field is employed to investigate IMF By penetration driven by the solar wind during southward interplanetary magnetic field (IMF) with uniform resistivity. It is found that the magnetic field By is built up in the central plasma sheet of the Earth’s magnetotail. When θ = 30° (where BIMFy = BIMF sin θ), the magnetic field By in the plasma sheet is the strongest and even larger than the initial imposed BIMFy. In addition, BIMFy promotes the reconnection process of dayside magnetopause. With a further increase in θ, the reconnection rate of dayside magnetopause and the magnetic field By decrease, and the structure changes significantly. The results can be used to analyze the observed data of IMF By penetration.

Three-dimensional magnetic reconnection in complex multiple X-point configurations in an ancient solar–lunar terrestrial system

“…A detailed description of the model and its numerical solver can be found in Ref. [33]. Characteristic parameters, such as the Earth-Moon distance (D EM = 18R E ), fierce solar wind conditions due to the "faint young Sun", [34] and especially ancient Earth field and Moon field ∼ 3 Ga-4 Ga ago [27] are selected in the simulation of this work.…”