Mean Magnetic Field Generation in Sheared Rotators

A generalized mean magnetic field induction equation for differential rotators is derived, including a compressibility, and the anisotropy induced on the turbulent quantities from the mean magnetic field itself and a mean velocity shear. Derivations of the mean field equations often do not emphasize that there must be anisotropy and inhomogeneity in the turbulence for mean field growth. The ani...

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ar X iv : a st ro - p h / 99 07 06 1 v 2 8 A ug 1 99 9 – 1 – Mean Magnetic Field Generation in Sheared Rotators

A generalized mean magnetic field induction equation for differential rotators is derived, including a compressibility, and the anisotropy induced on the turbulent quantities from the mean magnetic field itself and a mean velocity shear. Derivations of the mean field equations often do not emphasize that there must be anisotropy and inhomogeneity in the turbulence for mean field growth. The ani...

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ar X iv : a st ro - p h / 99 07 06 1 v 1 5 J ul 1 99 9 – 1 – Mean Magnetic Field Generation in Sheared Rotators

A generalized mean magnetic field induction equation for differential rotators is derived, including a compressibility, and the anisotropy induced on the turbulent quantities from the mean magnetic field itself and a mean velocity shear. Derivations of the mean field equations often do not emphasize that there must be anisotropy and inhomogeneity in the turbulence for mean field growth. The ani...

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Synchronization for discrete mean-field rotators

We analyze a non-reversible mean-field jump dynamics for discrete q-valued rotators and show in particular that it exhibits synchronization. The dynamics is the meanfield analogue of the lattice dynamics investigated by the same authors in [30] which provides an example of a non-ergodic interacting particle system on the basis of a mechanism suggested by Maes and Shlosman [37]. Based on the cor...

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New mechanism of generation of large-scale magnetic field in a sheared turbulent plasma

A review of recent studies on a new mechanism of generation of large-scale magnetic field in a sheared turbulent plasma is presented. This mechanism is associated with the shear-current effect which is related to the W×J-term in the mean electromotive force. This effect causes the generation of the large-scale magnetic field even in a nonrotating and nonhelical homogeneous sheared turbulent con...

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Mean Magnetic Field Generation in Sheared Rotators

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