Dynamic alignment and plasmoid formation in relativistic magnetohydrodynamic turbulence

Abstract

We present high resolution 2D and 3D simulations of magnetized decaying turbulence in relativistic resistive magneto-hydrodynamics. The simulations show dynamic formation of large scale intermittent long-lived current sheets being disrupted by the tearing instability into plasmoid chains. These current sheets are locations of enhanced magnetic field dissipation and heating of the plasma. We find magnetic energy spectra $\propto k^{-3/2}$, together with strongly pronounced dynamic alignment of Elsasser fields and of velocity and magnetic fields, for strong guide-field turbulence, whereas we retrieve spectra $\propto k^{-5/3}$ for the case of a weak guide-field.

accepted for publication in the ApJ Letters

References in corpus (10)

• The NumPy array: a structure for efficient numerical computation
• Instability of current sheets and formation of plasmoid chains
• Mayavi: a package for 3D visualization of scientific data
• Formation of Hard Power-laws in the Energetic Particle Spectra Resulting from Relativistic Magnetic Reconnection
• Dynamic Alignment in Driven Magnetohydrodynamic Turbulence
• Particle acceleration in axisymmetric pulsar current sheets
• Kinetic turbulence in relativistic plasma: from thermal bath to non-thermal continuum
• Magnetohydrodynamic turbulence mediated by reconnection
• On the linear theory of Kelvin-Helmholtz instabilities of relativistic magnetohydrodynamic planar flows
• Strong Coupling of Alfvén and Fast Modes in Compressible Relativistic Magnetohydrodynamic Turbulence in Magnetically-Dominated Plasmas

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