Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unveiling the 100 pc scale nuclear radio structure of NGC 6217 with
  e-MERLIN and the VLA   We present high-sensitivity 1.51 GHz e-MERLIN radio images of the nearby
galaxy NGC 6217. We resolve the compact radio source at the centre of NGC 6217
for the first time, finding a twin-lobed structure with a total linear size of
~4 arcsec (~400pc). The radio source does not have a compact central core but
there is an unresolved hot spot near the outer edge of the southern lobe.
Combining our e-MERLIN data with new VLA A-Array data and archival
multi-wavelength data, we explore possible scenarios which might explain this
complex radio morphology. We conclude that this radio source is most likely
powered by a low-luminosity AGN (LLAGN) but with a possible important
contribution from nuclear star formation. We also investigate the origin of a
putative X-ray jet in NGC 6217, previously suggested in the literature. This
`jet' consists of three X-ray `knots' in a line, pointed away from the nucleus,
with a total size of ~3 arcmin (~15 kpc). We find no extended radio emission
coincident with the `jet'. An additional compact radio source, aligned with the
knots but without an X-ray counterpart is detected. We detect IR/optical
sources falling within the X-ray extraction regions of the `knots', but note
that these sources could be chance associations due to high source density
around the target field and we estimate the probability of three randomly
aligned X-ray sources to be 0.3 per cent in this field.

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The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph