The Anisotropy of Electron MHD Turbulence

Abstract

We present numerical studies of 3-dimensional electron magnetohydrodynamic (EMHD) turbulence. We investigate cascade timescale and anisotropy of freely decaying strong EMHD turbulence with zero electron skin depth. Cascade time scales with $k^{-4/3}$. Our numerical results clearly show scale-dependent anisotropy. We discuss that the observed anisotropy is consistent with $k_{\Vert }\propto k_{\perp }^{1/3}$, where $k_{\Vert }$ and $k_{\perp }$ are wave numbers parallel and perpendicular to (local) mean magnetic field, respectively.

4 pages, 3 figures, ApJL, submitted

References in corpus (1)

• Magnetic Field Evolution in Neutron Star Crusts due to the Hall Effect and Ohmic Decay

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