Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A disk in the Galactic Center in the past ?   We raise the question whether in the past a disk could have existed in our
Galactic Center which has disappeared now. Our model for the interaction of a
cool disk and a hot corona above (Liu et al. 2004) allows to estimate an upper
limit for the mass that might have been present in a putative accretion disk
after a last star forming event, but would now have evaporated by coronal
action.

10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex