Abstract.
This lecture is an introduction to MHD. Relevant equations, both in the classical and special-relativistic regimes are derived. The magnetic field evolution is considered both in the perfect-MHD limit and when weak resistivity is present, giving rise to reconnection flows. A short section gives a flavour of dynamo theory. Examples of simple stationnary flows and equilibria are then presented. Stationnary, axisymmetric, rotating perfect-MHD winds and jets are discussed in some more detail. Their asymptotic structure is described. The last sections deal with small motions about an equilibrium and stability. These issues are illustrated by a few classical examples. The last section discusses linear aspects of the magneto-rotationnal instability.
Preview
Unable to display preview. Download preview PDF.
Author information
Authors and Affiliations
Editor information
Rights and permissions
About this paper
Cite this paper
Heyvaerts, J. Course 1: Accretion and Ejection-Related MHD. In: Beskin, V., Henri, G., Menard, F., Pelletier, G., Dalibard, J. (eds) Accretion discs, jets and high energy phenomena in astrophysics. Les Houches-École d’Été de Physique Theorique, vol 78. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-39932-2_1
Download citation
DOI: https://doi.org/10.1007/978-3-540-39932-2_1
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-20171-7
Online ISBN: 978-3-540-39932-2
eBook Packages: Springer Book Archive