Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Future of X-ray Reverberation from AGN   XMM-Newton is capable of making a transformational advance in our
understanding of how luminous accreting black holes work, by dedicating about
10 per cent of future observing time to long observations, of order
Megaseconds, to X-ray variable Active Galactic Nuclei (AGN) research. This
would enable reverberation studies, already a commonplace feature of AGN, to
proceed to the next level and follow the behaviour of the powerful dynamic
corona. Such a dedicated legacy programme can only be carried out with
XMM-Newton.

18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc