Magnetic-field generation in helical turbulence

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dc.creatorBoldyrev, Stanislav
dc.creatorCattaneo, Fausto
dc.creatorRosner, Robert
dc.date2005-04-27
dc.date2005-12-14
dc.date.accessioned2026-07-07T06:37:10Z
dc.date.available2026-07-07T06:37:10Z
dc.descriptionWe investigate analytically the amplification of a weak magnetic field in a homogeneous and isotropic turbulent flow lacking reflectional symmetry (helical turbulence). We propose that the spectral distributions of magnetic energy and magnetic helicity can be found as eigenmodes of a self-adjoint, Schrödinger-type system of evolution equations. We argue that large-scale and small-scale magnetic fluctuations cannot be effectively separated, and that the conventional alpha-model is, in general, not an adequate description of the large-scale dynamo mechanism. As a consequence, the correct numerical modeling of such processes should resolve magnetic fluctuations down to the very small, resistive scales.
dc.description4 pages
dc.identifierhttps://arxiv.org/abs/astro-ph/0504588
dc.identifierhttp://arxiv.org/abs/astro-ph/0504588
dc.identifierPhys. Rev. Lett. 95 (2005) 255001
dc.identifierdoi:10.1103/PhysRevLett.95.255001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/100301
dc.subjectAstrophysics
dc.subjectFluid Dynamics
dc.subjectPlasma Physics
dc.titleMagnetic-field generation in helical turbulence
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