Structure of Current Sheets with Quasi-Adiabatic Dynamics of Particles in the Solar Wind

Cosmic Research. 2018. Vol. 56. No. 6. P. 462–470.

Malova H. V., Popov V., Khabarova O. V., Grigorenko E. E., Petrukovich A. A., Zelenyi L. M.

Within the self-consistent hybrid model based on the quasi-adiabatic approximation of the proton
dynamics, a fine structure of strong current sheets (SCSs) in the solar wind has been investigated, including
the heliospheric current sheet. The motion of electrons is fast and considered in the Boltzmann approximation.
The simulation results have been shown that the SCS profiles have a multiscale enclosed structure with
a narrow central current sheet that is enclosed in a wider sheet, similar to the heliospheric current sheet surrounded
by the plasma sheet. The features of the SCS structure are determined by the relative contributions
of the current of demagnetized protons in serpentine orbits and drift currents of electrons. The model predicts
and describes the properties of SCSs observed by spacecraft. It has been shown that the multiscale structure
of current sheets is an inherent intrinsic property of current sheets in the solar wind.

Keywords: solar wind, Current Sheets, Particles Dynamic