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Compressible Sub-Alfvenic MHD turbulence in Low-beta Plasmas

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arxiv astro-ph/0205282 v1 pith:LPODYNMR submitted 2002-05-17 astro-ph physics.flu-dynphysics.geo-phphysics.plasm-phphysics.space-ph

Jungyeon Cho , A. Lazarian This is my paper · ORCID
classification astro-phphysics.flu-dynphysics.geo-phphysics.plasm-phphysics.space-ph
keywords modesturbulencealfvencompressiblefastslowlow-betaplasmas
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We present a model for compressible sub-Alfvenic isothermal magnetohydrodynamic (MHD) turbulence in low-beta plasmas and numerically test it. We separate MHD fluctuations into 3 distinct families - Alfven, slow, and fast modes. We find that, production of slow and fast modes by Alfvenic turbulence is suppressed. As a result, Alfven modes in compressible regime exhibit scalings and anisotropy similar to those in incompressible regime. Slow modes passively mimic Alfven modes. However, fast modes show isotropy and a scaling similar to acoustic turbulence.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Polarized 3D Synthetic Turbulence I: Magnetic Field Line Random Walk

    astro-ph.HE 2026-05 unverdicted novelty 7.0 of 10

    Magnetosonic polarization in synthetic turbulence produces field-line diffusion scaling as (δB/B)^4 with subdiffusion matching MHD simulations, unlike the (δB/B)^2 scaling for random polarization.

  2. Sub-sonic compressible magnetohydrodynamic turbulence I. Alfv\'enic and fast-magnetosonic injection, amplitude dependence, and compressibility effects

    physics.plasm-ph 2026-08 conditional novelty 6.0 of 10

    In decaying sub-sonic MHD turbulence simulations, the amplitude and plasma beta, not the injection wave type, set the turbulent density fluctuation level, while curvature and mirror statistics change dramatically with...

  3. Intensity fluctuations of radio halo in galaxy cluster: Insights from power spectrum estimation

    astro-ph.CO 2026-07 conditional novelty 6.0 of 10

    Angular power spectra of 610 MHz radio halos show excess power-law fluctuations only in Abell 2744, requiring multiplicative C_ℓ ∝ ℓ^{-3} structure atop an exponential profile and consistent with ICM turbulence.

  4. Transport of electrons in tangled magnetic fields

    physics.space-ph 2026-05 unverdicted novelty 2.0 of 10

    This review summarizes the basic principles of electron transport in inhomogeneous and tangled magnetic fields through gyro-centre trajectories, kinetic instabilities, trapping, and diffusion processes.

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