Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The self-similar structure of advection-dominated discs with outflow and
  radial viscosity   Observational evidence and theoretical arguments postulate that outflows may
play a significant role in the advection-dominated accretion discs (ADAFs).
While the azimuthal viscosity is the main focus of most previous studies in
this context, recent studies indicated that disc structure can also be affected
by the radial viscosity. In this work, we incorporate these physical
ingredients and the toroidal component of the magnetic field to explore their
roles in the steady-state structure of ADAFs. We thereby present a set of
similarity solutions where outflows contribute to the mass loss, angular
momentum removal, and the energy extraction. Our solutions indicate that the
radial viscosity causes the disc to rotate with a slower rate, whereas the
radial gas velocity increases. For strong winds, the infall velocity may be of
order the Keplerian speed if the radial viscosity is considered and the
saturated conduction parameter is high enough. We show that the strength of
magnetic field and of wind can affect the effectiveness of radial viscosity.

5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom