Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Winged Radio Sources from LOFAR Two-metre Sky Survey First Data Release
  (LoTSS DR1)   Winged radio sources are a small sub-class of extragalactic radio sources
which display a pair of low surface brightness radio lobes, known as `wings'
aligned at a certain angle with the primary jets. Depending on the location of
wings, these galaxies look like X or Z and are known as X-shaped Radio Galaxy
(XRG) or Z-shaped Radio Galaxy (ZRG). We report the identification of 33 winged
radio sources from the LOFAR Two-metre Sky Survey First Data Release (LoTSS
DR1) out of which 21 sources are identified as X-shaped radio galaxies and 12
as Z-shaped radio galaxies. Optical counterparts are identified for 14 XRGs (67
per cent) and 12 ZRGs (100 per cent). We studied various physical parameters of
these sources like spectral index, radio luminosity, and power. The radio
spectrum of the majority of XRGs and ZRGs is steep ($\alpha_{1400}^{144}>0.5$),
which is typical of lobe dominated radio galaxies. The statistical studies are
done on the relative size of the major and minor axes and the angle between the
major axis and minor axis for XRGs.

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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: q-alg
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: cs
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The categories of this paper are: funct-an