A viscosity prescription for a self-gravitating accretion disc

Details A viscosity prescription for a self-gravitating accretion disc A viscosity prescription for a self-gravitating accretion disc

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.225..607l&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 225, April 1, 1987, p. 607-613. NASA-sponsored research

Astronomy and Astrophysics

Astronomy

210

Accretion Disks, Angular Momentum, Gas Viscosity, Gravitational Effects, Momentum Transfer, Similarity Theorem, Stellar Evolution

Scientific paper

A model for treating the transfer of angular momentum within a gaseous differentially rotating disc subject to gravitational instability is discussed in terms of an effective kinematic viscosity. It is assumed that even when matter in the disc is subject to self-gravitation, the instability does not necessarily lead directly to condensation of parts of the disc into self-gravitating bodies. Conditions under which the present model permits a similarity solution are discussed, and it is shown that the general solution tends to the similarity solution at large times.

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