Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (147) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
· Translate This Page
Thick accretion disks - Self-similar, supercritical models
Begelman, M. C.; Meier, D. L.
AA(California, University, Berkeley, CA; Cambridge University, Cambridge, England), AB(California Institute of Technology, Jet Propulsion Laboratory; California Institute of Technology, Pasadena, CA)
Astrophysical Journal, Part 1, vol. 253, Feb. 15, 1982, p. 873-896. Research supported by the Science Research Council of England (ApJ Homepage)
Publication Date:
NASA/STI Keywords:
Hydrodynamics, Stellar Mass Accretion, Stellar Models, Stellar Structure, Adiabatic Equations, Angular Velocity, Centrifugal Force, Pressure Gradients, Radiation Pressure, Stellar Gravitation, Stellar Radiation, Viscous Fluids
Bibliographic Code:


Self-similar models, characterized by near-equilibrium between gravity, centrifugal force and radiation pressure, are generated for geometrically thick, supercritical accretion disks analyzing their structure and stability. The assumption that hydrodynamic quantities scale as power laws in radius allows for computation of disk structure as a function of the angle from the rotation axis, given a viscosity law model to which the structure of the interior of the disk is sensitive. The behaviors of other hydrodynamic quantities near the surface depend on the viscosity law, but not on the degree of pressure support on the equator. All models are found to be unstable to local axisymmetric perturbations at high latitudes noting the role of convection in bringing the disk to marginal stability. It is recommended that future thick accretion disk models take into account both their convective nature and the dependence of their structure on the viscosity law.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences

More Article Retrieval Options

HELP for Article Retrieval

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
arXiv e-prints