EAS Publications Series
Volume 3, 2002Star Formation and the Physics of Young Stars: Summer school on Stellar Physics X
|Page(s)||203 - 228|
|Published online||25 September 2002|
J. Bouvier and J.-P. Zahn (eds)
EAS Publications Series, 3 (2002) 203-228
Theory of Turbulent Accretion Disks
Institut d'Astrophysique de Paris, France
2 Université Denis Diderot-Paris VII, France
In low-mass disks, turbulent torques are probably the most important way of redistributing angular momentum. Here we present the theory of turbulent accretion disks. We show the molecular viscosity is far too small to account for the evolutionary timescale of disks, and we describe how turbulence may result in enhanced transport of (angular) momentum. We then turn to the magnetorotational instability, which thus far is the only mechanism that has been shown to initiate and sustain turbulence in disks. Finally, we present both the basis and the structure of α disk models.
© EAS, EDP Sciences, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.