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


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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 1, 3

1 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

© European Southern Observatory (ESO) 1998

Online publication: August 27, 1998

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