Sheared helical turbulence and the helicity constraint in large-scale dynamos

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dc.creatorBigazzi, A.
dc.creatorBrandenburg, A.
dc.creatorSubramanian, K.
dc.date2000-12-11
dc.date.accessioned2026-07-07T01:56:59Z
dc.date.available2026-07-07T01:56:59Z
dc.descriptionThe effect of shear on the growth of large scale magnetic fields in helical turbulence is investigated. The resulting large-scale magnetic field is also helical and continues to evolve, after saturation of the small scale field, on a slow resistive time scale. This is a consequence of magnetic helicity conservation. Because of shear, the time scale needed to reach an equipartition-strength large scale field is shortened proportionally to the ratio of the resulting toroidal to poloidal large scale fields.
dc.description8 pages, 3 figures. To be published in the Proceedings of the NATO Advanced Research Workshop, 'Dynamos and Dynamics: a mathematical challenge', August 21 - 26, 2000 Cargese, Corsica, ASI Nato series, Kluwer pub
dc.identifierhttps://arxiv.org/abs/astro-ph/0012240
dc.identifierhttp://arxiv.org/abs/astro-ph/0012240
dc.identifierP.Chossat et al.(eds.), Dynamo and Dynamics, a Mathematical Challenge, 117-124, 2001. Kluver Ac. Pub.
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/2207
dc.subjectAstrophysics
dc.titleSheared helical turbulence and the helicity constraint in large-scale dynamos
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