Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Head Tail Radio Sources from VLA FIRST Survey   The study of Head Tail (HT) radio galaxies track the information of
associated galaxy clusters. With the help of the VLA FIRST survey at 1.4 GHz,
we detected 607 new HT radio sources, among them, 398 are Wide Angle Tail (WAT)
and 216 are Narrow-Angle Tail (NAT) sources. NAT sources generally have `V'
shaped structure with an opening angle less than ninety degrees and for WAT
sources opening angle between the jets is more than ninety degrees. We found
that almost 80 per cent of our sources are associated with a known galaxy
cluster. We mentioned various useful physical properties of these HT sources.
Taking advantage of a large sample of newly discovered HT sources, various
statistical studies have been done. The luminosity range of sources presented
in the current paper is $10^{39}$ $\leq$ $L_{1.4GHz}$ $\leq$ $10^{43}$ erg
sec$^{-1}$. We identified optical counterparts for 193 WAT and 104 NAT sources.
The sources are found up to redshift 2.08.

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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
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The categories of this paper are: physics
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The categories of this paper are: q-bio
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: cond-mat
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The categories of this paper are: econ
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The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: mtrl-th