3:42 PM - 3:45 PM
[PEM26-P05] Electron temperature anisotropy during compression of current sheets thicker than the ion skin depth
3-min talk in an oral session
In this study, we perform the current sheet thinning by using the one-dimensional PIC simulation imposed the Dawn-Dusk electric field at boundaries with various initial parameters. We investigate the dependence on the initial parameters of the strength and the distribution of the anisotropy and of the compression level of current sheets. The results show that (1) the distribution of the anisotropy changes with the initial thickness of current sheets, (2) the strength of the anisotropy at the center of current sheets is explained by the adiabatic heating perpendicular to magnetic fields regardless of the initial parameters, (3) the compression level of current sheets normalized by the local ion skin depth is much lower than the ratio of the terminal strength of the lobe magnetic field to the initial strength of that. These results can be useful to understand processes of the current sheet thinning and the trigger of magnetic reconnection in multidimensional simulations including the tearing instability and/or the lower-hybrid drift instability.