Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bent-Tailed Radio Sources in the Australia Telescope Large Area Survey
  of the Chandra Deep Field-South   Using the 1.4 GHz Australia Telescope Large Area Survey (ATLAS), supplemented
with the 1.4 GHz Very Large Array images, we undertook a search for bent-tailed
(BT) radio galaxies in the Chandra Deep Field-South (CDFS). Here we present a
catalog of 56 detections, which include 45 bent-tailed sources, four diffuse
low-surface-brightness objects (one relic, two halos, and one unclassified
object), and a further seven complex, multi-component sources. We report BT
sources with rest-frame powers in the range $10^{22} \leq$ $\textrm{P}_{1.4
\textrm{ GHz}} \leq 10^{26}$ W Hz$^{-1}$, redshifts up to 2 and linear extents
from tens of kpc up to about one Mpc. This is the first systematic study of
such sources down to such low powers and high redshifts and demonstrates the
complementary nature of searches in deep, limited area surveys as compared to
shallower, large surveys. Of the sources presented here one is the most distant
bent-tailed source yet detected at a redshift of 2.1688. Two of the sources are
found to be associated with known clusters: a wide-angle tail source in Abell
3141 and a putative radio relic which appears at the infall region between the
galaxy group MZ 00108 and the galaxy cluster AMPCC 40. Further observations are
required to confirm the relic detection, which if successful would demonstrate
this to be the least powerful relic yet seen with $\textrm{P}_{1.4 \textrm{
GHz}} = 9 \times 10^{22}$ W Hz$^{-1}$. Using these data we predict future 1.4
GHz all-sky surveys with a resolution of $\sim$ 10 arcseconds and sensitivity
of 10 $\mu$Jy will detect of the order of 560,000 extended
low-surface-brightness radio sources of which 440,000 will have a bent-tailed
morphology.

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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: math
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The categories of this paper are: patt-sol
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The categories of this paper are: ao-sci
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: alg-geom
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
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The categories of this paper are: supr-con