Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: AGN Flickering and Chaotic Accretion   Observational arguments suggest that the growth phases of the supermassive
black holes in active galactic nuclei have a characteristic timescale $\sim
10^5$ yr. We show that this is the timescale expected in the chaotic accretion
picture of black hole feeding, because of the effect of self-gravity in
limiting the mass of any accretion disc feeding event.

15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs