Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A class of self-gravitating accretion disks   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.

15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph