Secondary tearingmode in the nonlinear evolution of magnetorotational instability | Zendy

Tatsuno T. | Zendy; Dorland W. | Zendy

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Secondary tearingmode in the nonlinear evolution of magnetorotational instability

Author(s) -

Tatsuno T.,

Dorland W.

Publication year - 2008

Publication title -

astronomische nachrichten

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.394

H-Index - 63

eISSN - 1521-3994

pISSN - 0004-6337

DOI - 10.1002/asna.200811013

Subject(s) - magnetorotational instability , physics , instability , magnetic reconnection , nonlinear system , context (archaeology) , tearing , accretion (finance) , magnetohydrodynamics , classical mechanics , mechanics , accretion disc , magnetic field , astrophysics , geology , paleontology , quantum mechanics , thermodynamics

Numerical investigation of the two‐dimensional magnetic reconnection is given in the context of the nonlinear evolution of the Magneto‐Rotational Instability (MRI). With a careful comparison to various theories using both one‐ and twodimensional analysis, it is found that a new stabilizing effect of the centrifugal force on tearing instability must be present in the specific geometry of the MRI.Magnetic reconnection might play a key role to the formation of the nonaxisymmetric structures observed in MRI experiments. The results may also be useful for the estimate of the accretion rate in various astrophysical objects. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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