Turbulent regeneration of magnetic fields

Details Turbulent regeneration of magnetic fields Turbulent regeneration of magnetic fields

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.122..193c&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 122, no. 2, May 1986, p. 193-199. CNPq-supported research.

Astronomy and Astrophysics

Astrophysics

4

Dynamo Theory, Interstellar Magnetic Fields, Magnetohydrodynamic Turbulence, Regeneration, Reynolds Number, Velocity Distribution

Scientific paper

The turbulent velocity field proposed by Parker (1955, 1970) was used to compute an exact expression for the regeneration term of the turbulent dynamo equation, which is valid for arbitrary values of the magnetic Reynolds number. It was found that finite conductivity can change the regenerative character of the dynamo, depending on the geometry and character of the fluid motion in the turbulent eddies. The exact solution of the regeneration problem of a magnetic field in the turbulent dynamos shows the correctness of the approximations employed by Levy (1978) in the limit of high magnetic Reynolds number.

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