Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Advectively dominated flows in the cores of giant elliptical galaxies:
  application to M60 (NGC 4649)   It has been suggested that the final stages of accretion in present--day
giant elliptical galaxies occur in an advection-dominated mode. The poor
radiative efficiency of this accretion solution accounts for the fact that
massive black holes, which are believed to reside in the centres of these
galaxies, do not have the luminosities expected if accretion from the hot
interstellar medium occurs at the Bondi rate. We discuss the
advection-dominated solution for the nucleus of M60 (NGC 4649) and show that
accretion at the Bondi rate is consistent with the core flux from radio to
X-ray. This solution allows for a black hole mass of ~ 10^9 solar masses as
required by independent arguments. The successful application of this model to
both M60, and previously to the well known nucleus of M87, suggests that
accretion of hot gas in an elliptical galaxy creates the ideal circumstances
for advection-dominated accretion flows to operate.

28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc