Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A panchromatic view of AGN   We review the continuum emission of Active Galactic Nuclei (AGN) over the
entire electromagnetic spectrum. After a brief historical introduction, we
describe the main spectral properties of unobscured AGN, discussing the
selection biases which prevent us from having a complete view of the AGN
population in the universe, and trying to build an updated spectral energy
distribution of optically selected quasars. In the second part of the review,
we describe the spectral properties of obscured AGN. Finally, we discuss the
main observational methods in the different wavelength bands for disentangling
AGN and stellar emission, and the ability of these methods to find new (mainly
obscured) AGN, a significant fraction of which are probably still missing in
current surveys.

28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat