2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/10331Accretion disk instabilities are briefly reviewed. Some details are given to the short-wavelength thermal instabilities and the convective instabilities. Time-dependent calculations of two-dimensional advection-dominated accretion flows are presented.an invited talk presented at the workshop: Basic Physics of Accretion Disks, Kyoto, 22 - 27 October 1995. uuencoded, compressed, PS file; also available on Web at http://fy.chalmers.se/~chen/Astrophysicstext