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Wavenumber spectrum of whistler turbulence: Particle-in-cell simulation
Narita, Y.; Gary, S. Peter; Saito, S.
The forward cascade of decaying whistler turbulence is studied in low beta plasma to understand essential properties of the energy spectrum at electron scales, by using a two-dimensional electromagnetic particle-in-cell (PIC) simulation. This simulation demonstrates turbulence in which the energy cascade rate is greater than the dissipation rate a…
Equations of state in collisionless magnetic reconnection
Egedal, J.; Daughton, W.; Drake, J. F. +4 more
Kinetic simulation as well as in situ measurement of reconnecting current sheets in the Earth's magnetosphere show strong electron temperature anisotropy, with the parallel electron temperature becoming several times greater than the perpendicular temperature. This anisotropy is accounted for in a solution of the Vlasov equation recently derived f…
Potential structure around the Cassini spacecraft near the orbit of Enceladus
Miloch, W. J.; Olson, J.; Ratynskaia, S. +1 more
We present the results of numerical simulations of the potential structure around an object in a streaming plasma with parameters relevant for the Cassini spacecraft passing through Saturn's plasma disk near the orbit of Enceladus. Two- and three-dimensional particle-in-cell codes have been used allowing the potential of the simulated spacecraft b…
Hall magnetohydrodynamic effects for current sheet flapping oscillations related to the magnetic double gradient mechanism
Semenov, V. S.; Erkaev, N. V.; Biernat, H. K.
Hall magnetohydrodynamic model is investigated for current sheet flapping oscillations, which implies a gradient of the normal magnetic field component. For the initial undisturbed current sheet structure, the normal magnetic field component is assumed to have a weak linear variation. The profile of the electric current velocity is described by hy…
Nonlinear effects associated with the dispersive Alfvén waves in space plasmas
Sharma, R. P.; Kumar, Sanjay
This paper presents the model equations governing the nonlinear dynamics of the dispersive Alfvén wave (DAW) in the low-β plasmas (β ≪me/mi; known as inertial Alfvén waves) applicable to solar corona and intermediate-β plasmas (me/mi≪β≪1; kinetic Alfvén waves) applicable to solar wind in Earth's magnetos…