The effects of dynamo-generated magnetic fields on accretion disc structure

Authors
Campbell, CG
Citation
Cg. Campbell, The effects of dynamo-generated magnetic fields on accretion disc structure, GEOPH ASTRO, 90(1-2), 1999, pp. 113-126
Citations number
11
Categorie Soggetti
Space Sciences
Journal title
GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS
ISSN journal
03091929 → ACNP
Volume
90
Issue
1-2
Year of publication
1999
Pages
113 - 126
Database
ISI
SICI code
0309-1929(1999)90:1-2<113:TEODMF>2.0.ZU;2-#
Abstract
The effects of dynamo-generated magnetic fields in accretion discs are cons idered for the two main types of diffusion mechanisms of turbulence and mag netic buoyancy. Thin disc solutions are possible in both cases, and it is s hown that the dynamo equations and vertical equilibrium place limits on the turbulent parameters. A lower limit arises for the Prandtl number in the c ase of turbulent diffusion.