Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-08-09
Astronomy and Astrophysics
Astrophysics
To appear in A&A
Scientific paper
We consider a class of steady-state self-gravitating accretion disks for which efficient cooling mechanisms are assumed to operate so that the disk is self-regulated at a condition of approximate marginal Jeans stability. In an earlier paper, this scenario had been shown to lead naturally, in the absence of a central point mass, to a self-similar solution characterized by a flat rotation curve. In this article we investigate the entire parameter space available for such self-regulated accretion disks and provide two non-trivial extensions of the model. The first extension is that of a bimodal disk, obtained by partially relaxing the self-regulation constraint, so that full matching with an inner "standard" Keplerian accretion disk takes place. The second extension is the construction of self-regulated accretion disks embedded in a diffuse spherical "halo". The analysis is further strengthened by a careful discussion of the vertical structure of the disk, in such a way that the transition from self-gravity dominated to non-gravitating disks is covered uniformly.
Bertin Giuseppe
Lodato Giuseppe
No associations
LandOfFree
A class of self-gravitating accretion disks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A class of self-gravitating accretion disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A class of self-gravitating accretion disks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-222175