Astron. Astrophys. 337, 966-974 (1998)

Influence of viscosity laws on the transition to the self-gravitating part of accretion disks

Anne Bardou ^{1, 2}, Jean Heyvaerts ² and Wolfgang J. Duschl <sup>1, 3

1</sup> Institut für Theoretische Astrophysik, Tiergartenstraße 15, D-69121 Heidelberg, Germany
² Observatoire de Strasbourg, 11 rue de l'Université, F-67000 Strasbourg, France
³ Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany

Received 7 January 1998 / Accepted 12 June 1998

Abstract

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 account self-gravity. Using this new viscosity law, we obtain a slightly different solution (compared with the standard one) for the transition between the non self-gravitating and the self-gravitating part of the disk but no solution in the self-gravitating part where additional viscosity mechanisms may play a role.

Key words: accretion disks galaxies : active hydrodynamics turbulence

Send offprint requests to: A. Bardou
Correspondence to: Observatoire de Strasbourg, 11, rue de l'Université, F-67000 Strasbourg, France

This article contains no SIMBAD objects.

Contents

• 1. Introduction
• 2. The viscosity law
• 3. An analytical solution for disks influenced by self-gravity
• 4. Discussion
  • 4.1. Global features of the new solution
  • 4.2. Self-consistency of the solution
  • 4.3. Transition to a disk dominated by self-gravity
• 5. Conclusion
• Acknowledgements
• References

© European Southern Observatory (ESO) 1998

Online publication: August 27, 1998
helpdesk.link@springer.de