Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Supermassive Black Hole or a Compact Object Without Events Horizon ?   Previously it was shown that gravitation theory allows the existance of
supermassive stable compact configurations of the degenerated electronic gas
(L.V.Verozub, Astr. Nacr. 317 (1996) 107) without events horizon. In the
present paper the simplest model of such kind of objects in gas environment has
been considered. It is shown that at the spherically symmetric accretion onto
the object the luminosity is about $10^{37} erg/s$ for the mass accretion rate
of the order of $\stackrel{\cdot}{M}=10^{-6} M_{\odot}/year$. The wavelength of
the radiation maximum is about $400\div 500\stackrel{\circ}{A}$. There is an
ionization zone around the central objects with the radius about $10^{-3}pc$.

28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph