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The Behaviour Of The Diamagnetic Current Modified Mri In Different Rotationprofiles, Suzan Doğan
The Behaviour Of The Diamagnetic Current Modified Mri In Different Rotationprofiles, Suzan Doğan
Turkish Journal of Physics
Magnetohydrodynamic turbulence driven by magnetorotational instability (MRI) has been widely accepted as an efficient mechanism for transporting angular momentum radially outward in the discs. Previously, we have shown the triggering effect of the magnetization currents and the gradients produced by these currents on MRI for Keplerian discs. In this work, we examine the properties of the diamagnetic current modified MRI for the discs where the epicyclic frequencies deviate from Keplerian behaviour. We show that the diamagnetic effect modifies the instability both for an increasing and for a decreasing angular momentum with radius. The novel unstable region produced by magnetization effects …