What physics does affect the MRI threshold

Details What physics does affect the MRI threshold What physics does affect the MRI threshold

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1242...23i&link_type=abstract

PLASMAS IN THE LABORATORY AND THE UNIVERSE: Interactions, Patterns, and Turbulence. AIP Conference Proceedings, Volume 1242, pp

Physics

Couette Flow, Magnetic Field Effects, Mach Number, Magnetohydrodynamic Waves, Stability Of Laminar Flows, Interplanetary Magnetic Fields, Shock Wave Interactions And Shock Effects, Magnetohydrodynamic Waves

Scientific paper

Several physical effects, which can considerably decrease the magnetorotational instability (MRI) threshold are discussed. First, we show that MRI features are changed significantly in non-uniform magnetic field. Second, the buoyancy effect is shown to can be destabilizing for azimuthal flow of a resistive plasma. Third, we demonstrate that the rotating fluid may be unstable with respect to non-axisymmetric modes at much lower rotation velocities than with respect to usual symmetric modes.

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