INFLUENCE OF VISCOSITY LAWS ON THE TRANSITION TO THE SELF-GRAVITATINGPART OF ACCRETION DISKS

In this paper we obtain a new solution for accretion disks influenced by self-gravity using the viscosity law proposed by Heyvaerts et al. ( 1996). We show how to solve analytically the problem taking into accou nt self-gravity. Using this new viscosity law, we obtain a slightly di fferent solution (compared with the standard one) for the transition b etween the non self-gravitating and the self-gravitating part of the d isk but no solution in the self-gravitating part where additional visc osity mechanisms may play a role.