Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Accretion in Radiative Equipartition (AiRE) Disks   Standard accretion disk theory (Shakura & Sunyaev 1973) predicts that the
total pressure in disks at typical (sub-)Eddington accretion rates becomes
radiation pressure dominated. However, radiation pressure dominated disks are
thermally unstable. Since these disks are observed in approximate steady state
over the instability time-scale, our accretion models in the radiation pressure
dominated regime (i.e. inner disk) need to be modified. Here, we present a
modification to the SS model, where radiation pressure is in equipartition with
gas pressure in the inner region. We call these flows Accretion in Radiative
Equipartition (AiRE) Disks. We introduce the basic features of AiRE disks and
show how they modify disk properties such as the Toomre parameter and central
temperature. We then show that the accretion rate of AiRE disks is limited from
above and below, by Toomre and nodal sonic point instabilities, respectively.
The former leads to a strict upper limit on the mass of supermassive black
holes as a function of cosmic time (and spin), while the latter could explain
the transition between hard and soft states of X-ray binaries.

13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph