Self-Organized Criticality and Intermittent Turbulence in an MHD Current Sheet with a Threshold Instability

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dc.creatorKlimas, Alexander J.
dc.creatorUritsky, Vadim M.
dc.creatorPaczuski, Maya
dc.date2007-01-17
dc.date2009-01-08
dc.date.accessioned2026-07-07T12:27:13Z
dc.date.available2026-07-07T12:27:13Z
dc.descriptionWe report numerical evidence of a self-organized criticality (SOC) and intermittent turbulence (IT) symbiosis in a resistive magnetohydrodynamic (MHD) current sheet model that includes a local hysteretic switch to capture plasma physical processes outside of MHD that are described in the model as current-dependent resistivity. Results from numerical simulations show scale-free avalanches of magnetic energy dissipation characteristic of SOC, as well as multi-scaling in the velocity field numerically indistinguishable from certain hierarchical turbulence theories. We suggest that SOC and IT may be complementary descriptions of dynamical states realized by driven current sheets -- which occur ubiquitously in astrophysical and space plasmas.
dc.description4 pages, 4 figures; corrected typos, updated Fig.2
dc.identifierhttps://arxiv.org/abs/astro-ph/0701486
dc.identifierhttp://arxiv.org/abs/astro-ph/0701486
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215131
dc.subjectAstrophysics
dc.titleSelf-Organized Criticality and Intermittent Turbulence in an MHD Current Sheet with a Threshold Instability
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