Dynamo-generated turbulence and outflows from accretion discs

Authors
Brandenburg, A
Citation
A. Brandenburg, Dynamo-generated turbulence and outflows from accretion discs, PHI T ROY A, 358(1767), 2000, pp. 759-774
Citations number
36
Categorie Soggetti
Multidisciplinary
Journal title
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
ISSN journal
1364503X → ACNP
Volume
358
Issue
1767
Year of publication
2000
Pages
759 - 774
Database
ISI
SICI code
1364-503X(20000215)358:1767<759:DTAOFA>2.0.ZU;2-U
Abstract
Local hydromagnetic simulations of accretion-disc turbulence currently prov ide the most convincing evidence that the origin of turbulence in discs cou ld be the Balbus-Hawley magnetorotational instability. The main results of such calculations are highlighted with particular emphasis on the generatio n of large-scale magnetic fields. Comparison with mean-field dynamo theory is made. This theory is then used to address the question of the launching and collimation of winds emanating from the disc surfaces.