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.
Particle transport through localized interactions with sharp magnetic field bends in MHD turbulence.Journal of Plasma Physics2023,89, 175890501, [arXiv:physics.plasm-ph/2304.03023]
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Cosmic ray transport requires a propagator P(k,s) that encodes memory and non-diffusive behaviors rather than being reduced to a single diffusion coefficient.
Multiphase ISM simulations show PeV cosmic-ray diffusion coefficients reach 10^30 cm^2 s^-1, with perpendicular transport boosted at thermal phase boundaries while overall transport is controlled by trans-Alfvenic warm and unstable gas.
Coherent structures that self-consistently emerge in strong MHD turbulence serve as the dominant sites for localized electric-field intensification and repeated particle acceleration across cosmic plasmas.
A review summarizing pitfalls in older CR-MHD models and progress toward more rigorous treatments that connect microphysical CR scales to galactic dynamics.
The paper reviews electron transport in tangled magnetic fields, including creation via turbulence, modulation by instabilities, trapping, cross-field diffusion, and energization.
citing papers explorer
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Polarized 3D Synthetic Turbulence I: Magnetic Field Line Random Walk
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.
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Beyond the Diffusion Coefficient: Propagators and Memory in Cosmic Ray Transport
Cosmic ray transport requires a propagator P(k,s) that encodes memory and non-diffusive behaviors rather than being reduced to a single diffusion coefficient.
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Diffusion of PeV Cosmic Rays in the Turbulent and Multiphase Interstellar Medium
Multiphase ISM simulations show PeV cosmic-ray diffusion coefficients reach 10^30 cm^2 s^-1, with perpendicular transport boosted at thermal phase boundaries while overall transport is controlled by trans-Alfvenic warm and unstable gas.
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Strong MHD Turbulence and Coherent Structures as Drivers of Cosmic Particle Acceleration
Coherent structures that self-consistently emerge in strong MHD turbulence serve as the dominant sites for localized electric-field intensification and repeated particle acceleration across cosmic plasmas.
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Cosmic Rays on Galaxy Scales: Progress and Pitfalls for CR-MHD Dynamical Models
A review summarizing pitfalls in older CR-MHD models and progress toward more rigorous treatments that connect microphysical CR scales to galactic dynamics.
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Transport of electrons in tangled magnetic fields
The paper reviews electron transport in tangled magnetic fields, including creation via turbulence, modulation by instabilities, trapping, cross-field diffusion, and energization.