Dynamo-driven accretion in galaxies

Details Dynamo-driven accretion in galaxies Dynamo-driven accretion in galaxies

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...270...53r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 270, no. 1-2, p. 53-59.

Astronomy and Astrophysics

Astrophysics

7

Accretion Disks, Dynamo Theory, Galactic Rotation, Magnetohydrodynamic Turbulence, Two Dimensional Models, Angular Momentum, Hydrodynamic Equations

Scientific paper

The 2D timestepping code of Elstner et al. (1990) is presently used to generate nonlinear flat dynamo models with a view to the feedback effects of the magnetic field on the inducing motions; these effects encompass alpha-quenching, turbulent buoyancy, and accretion flow. For galaxies with only a small core of rigid rotation, the dynamo is noted to work for the highest dimensionless c(eta) parameter value of unity. Only magnetic modes with quadrupolar symmetry are found.

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