Chirality, extended MHD statistics and solar wind turbulence

Abstract

We unite the one-flow-dominated-state (OFDS) argument of \citet{MeyrandGaltierPRL12} with the one-chiral-sector-dominated-state (OCSCS) one \citep[][]{hydrochirality} to form a nonlinear extended-magnetohydrodynamics (XMHD) theory for the solar wind turbulence (SWT), \textbf{ranging from the MHD- to subproton-, and even to subelectron-scale regimes} \citep[modifying the theory of][]{AbdelhamidLingamMahajanAPJ16}. Degenerate chiral states in \citet{MiloshevichLingamMorrisonNJP17}'s XMHD absolute equilibria are exposed with helical representation, to offer the basis of replacing the linear wave (of infinitesimal or arbitrarily finite amplitudes) arguments of previous theories with OCSDS. Possible connection of the OFDS-plus-OCSDS theory with the local minimal-energy/stability principle is also discussed.

uncorrected version

References in corpus (8)

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Cited by in corpus (4)

• Vorticity and helicity decompositions and dynamics with real Schur form of the velocity gradient
• Compressible helical turbulence: Fastened-structure geometry and statistics
• Direction of cascades in a magnetofluid model with electron skin depth and ion sound Larmor radius scales
• Local invariants in non-ideal flows of neutral fluids and two-fluid plasmas