Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Recent Chandra Results on AGNs & Future Prospects   I review Chandra's achievements in the last two years in AGN research. I
concentrate on some topics of my interest; some others are reviewed in an
accompanying article by K. Nandra. I comment briefly on the need to allow for
the discovery space to ensure rapid progress in the field.

27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con