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 (226) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
· Translate This Page
The role of viscosity and cooling mechanisms in the stability of accretion disks
Piran, T.
AA(Oxford University, Oxford, England)
Astrophysical Journal, Part 1, vol. 221, Apr. 15, 1978, p. 652-660. Research supported by the Science Research Council. (ApJ Homepage)
Publication Date:
NASA/STI Keywords:
Cooling, Stellar Mass Accretion, Stellar Models, Thermal Stability, Viscosity, Binary Stars, Black Holes (Astronomy), Disks (Shapes), X Ray Stars
Bibliographic Code:


A dispersion relation for linearized perturbation of a geometrically thin accretion disk is derived for an arbitrary viscosity law and cooling mechanism. Using this equation, we formulate the necessary and sufficient conditions for the stability of a disk. The conditions which are imposed on the viscosity and the cooling process are general and can be used as an a priori check if a particular choice of mechanisms leads to a stable disk. It is shown that the conditions cannot be satisfied by any one of the relevant cooling mechanisms with the standard viscosity law. Small variations in this law lead, however, to a stable configuration.

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