Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: XMM-Newton view of galaxy pairs: activation of quiescent black holes?   We report on XMM-Newton observations of three nearby galaxy pairs,
AM0707-273, AM1211-465, and AM2040-674. All six galaxies were previously
classified as HII galaxies based on optical and IR spectroscopic analysis. All
galaxies were detected with XMM-Newton and each member was isolated and
analyzed independently. The X-ray spectra reveal strong evidence of AGN
activity in the NE member of AM1211-465 pair. We measured a luminosity of
1.94(+0.11/-0.15)x10^42 erg/s in the 2-10 keV band and the presence of a
neutral FeK_alpha line with a confidence level of 98.8%. The high nH value,
2.2+/-0.2x10^22 cm^-2, would explain the misclassification of the source.
Marginal evidence of AGN nature was found in the X-ray spectra of AM1211-465SW
and AM0707-273E. The X-ray emission of the three remaining galaxies can be
explained by starburst activity.

22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math