Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the double natured solutions to the two-temperature external soft
  photon comptonized accretion disks   We have analyzed pair production in the innermost region of a two-temperature
external soft photon comptonized accretion disk. We have shown that, if the
viscosity parameter is greater than a temperature and r dependent critical
value, the solution to the disk equation is double valued: one, advection
dominated and the other, radiation dominated. When the viscosity parameter is
below this critical value, the accretion rate has to be confined within a
region limited by a minimum and a maximum accretion rates in order to have two
steady state solutions. These critical accretion rates are shown to be
dependent on r, on the temperature and on the viscosity parameter . Depending
on the combination of the parameters, the advection dominated solution may not
be physically consistent.

5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph