Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Faint arc-minute extended radio emission around Cygnus X-3   Aims. We revisit the vicinity of the microquasar Cygnus X-3 at radio
wavelengths. We aim to improve our previous search for possible associated
extended radio features/hot spots in the position angle of the Cygnus X-3
relativistic jets focusing on shorter angular scales than previously explored.
  Methods. Our work is mostly based on analyzing modern survey and archive
radio data, mainly including observations carried out with the Very Large Array
and the Ryle Telescopes. We also used deep near-infrared images that we
obtained in 2005.
  Results. We present new radio maps of the Cygnus X-3 field computed after
combining multi-configuration Very Large Array archive data at 6 cm and
different observing runs at 2 cm with the Ryle Telescope. These are probably
among the deepest radio images of Cygnus X-3 reported to date at cm
wavelengths. Both interferometers reveal an extended radio feature within a few
arc-minutes of the microquasar position, thus making our detection more
credible. Moreover, this extended emission is possibly non-thermal, although
this point still needs confirmation. Its physical connection with the
microquasar is tentatively considered under different physical scenarios. We
also report on the serendipitous discovery of a likely Fanaroff-Riley type II
radio galaxy only 3 arc-minute away from Cygnus X-3.

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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: stat
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The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
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The categories of this paper are: math
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The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
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The categories of this paper are: solv-int
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The categories of this paper are: physics
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The categories of this paper are: adap-org