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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…

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 ≪m_e/m_i; known as inertial Alfvén waves) applicable to solar corona and intermediate-β plasmas (m_e/m_i≪β≪1; kinetic Alfvén waves) applicable to solar wind in Earth's magnetos…