On the instability of thick accretion disks

Details On the instability of thick accretion disks On the instability of thick accretion disks

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...262..322h&link_type=abstract

Astrophysical Journal, Part 1, vol. 262, Nov. 1, 1982, p. 322-329.

Astronomy and Astrophysics

Astrophysics

4

Accretion Disks, Astrophysics, Dynamic Stability, Stellar Mass Accretion, Adiabatic Conditions, Equations Of State, Virial Theorem

Scientific paper

A general method, based on a variational principle, is developed for the study of adiabatic oscillations in a gas cloud with negligible self-gravity, rotating in an external gravitational field. Second order virial equations are obtained. As an example, the formalism is applied to disk models with an equation of state wherein p is proportional to rho to the 4/3 power; such disks turn out to be unstable.

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