Parametric resonance in a thin disc dynamo

Details Parametric resonance in a thin disc dynamo Parametric resonance in a thin disc dynamo

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.208..245k&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 208, no. 2, p. 245-252

Statistics

Computation

8

Accretion Disks, Computational Astrophysics, Dynamo Theory, Magnetic Fields, Periodic Variations, Perturbation, Resonance, Stellar Physics, Aspect Ratio, Density Wave Model, Integral Equations, Operators (Mathematics), Outgassing, Wave Equations

Scientific paper

The swing excitation or parametric resonance in dynamos is discussed. A simple example of the parametric resonance in a thin disk is considered by the use of Wiener integral methods. The additional growth rate of bisymmetric mode being controlled by the disk aspect ratio is shown to be relatively small and insufficient to explain the preferable generation of this mode in galaxies.

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