Waves, Coriolis Force, and the Dynamo Effect
Copyright policy )Waves, Coriolis Force, and the Dynamo Effect
Dynamo activity caused by waves in a rotating magneto-plasma is investigated. In astrophysical environments such as accretion disks and at sufficiently small spatial scales, the Hall effect is likely to play an important role. It is shown that a combination of the Coriolis force and Hall effect can produce a finite $α$-effect by generating net helicity in the small scales. The shear/ion-cyclotron normal mode of the Hall plasma is the dominant contributor to the dynamo action for short scale motions.
8 pages, 3 figures, ApJ (in press)
- University of Buenos Aires Argentina
- National Center for Atmospheric Research United States
- University Corporation for Atmospheric Research United States
- Facultad de Ciencias Agrarias y Forestales Argentina
- National Scientific and Technical Research Council Argentina
Environmental Magnetism, MHD, Magnetic Properties, Accretion (finance), FOS: Physical sciences, Astrophysics, Mechanics, Quantum mechanics, Star Formation in Molecular Clouds and Protoplanetary Disks, Magnetohydrodynamics, Plasma, Helicity, https://purl.org/becyt/ford/1.3, Dynamo theory, Magnetohydrodynamic Turbulence, magnetoplasma, https://purl.org/becyt/ford/1, Magnetic helicity, Solar dynamo, Quantum electrodynamics, Solar Physics and Space Weather, Galaxies: magnetic fields, Physics, Astrophysics (astro-ph), Hall effect, Astronomy and Astrophysics, Dynamo, Geomagnetic reversal, Space Weather and Magnetospheric Physics, Magnetic field, Physics and Astronomy, Magnetic fields, Cyclotron, Physical Sciences, Stars: magnetic fields
Environmental Magnetism, MHD, Magnetic Properties, Accretion (finance), FOS: Physical sciences, Astrophysics, Mechanics, Quantum mechanics, Star Formation in Molecular Clouds and Protoplanetary Disks, Magnetohydrodynamics, Plasma, Helicity, https://purl.org/becyt/ford/1.3, Dynamo theory, Magnetohydrodynamic Turbulence, magnetoplasma, https://purl.org/becyt/ford/1, Magnetic helicity, Solar dynamo, Quantum electrodynamics, Solar Physics and Space Weather, Galaxies: magnetic fields, Physics, Astrophysics (astro-ph), Hall effect, Astronomy and Astrophysics, Dynamo, Geomagnetic reversal, Space Weather and Magnetospheric Physics, Magnetic field, Physics and Astronomy, Magnetic fields, Cyclotron, Physical Sciences, Stars: magnetic fields
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