Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unveiling the hidden AGN in the merging starburst system ARP 299 (IC694
  + NGC 3690)   As part of a research of elusive AGN in a well defined sample of infrared
selected galaxies (using BeppoSAX, Chandra, XMM-Newton and INTEGRAL data) we
have observed with BeppoSAX the merging starburst system Arp 299. The
broad-band (0.1-40 keV) coverage of this observation clearly reveals, for the
first time in this system, the presence of a deeply buried AGN having an
intrinsic luminosity of L(0.5-100 keV) = 1.9E43 cgs.

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The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat