Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Phoenix survey: the pairing fraction of faint radio sources   The significance of tidal interactions in the evolution of the faint radio
population (sub-mJy) is studied using a deep and homogeneous radio survey (1.4
GHz), covering an area of 3.14 deg$^2$ and complete to a flux density of 0.4
mJy. Optical photometric and spectroscopic data are also available for this
sample. A statistical approach is employed to identify candidate physical
associations between radio sources and optically selected `field' galaxies. We
find an excess of close pairs around optically identified faint radio sources,
albeit at a low significance level, implying that the pairing fraction of the
sub-mJy radio sources is similar to that of `field' galaxies (at the same
magnitude limit) but higher than that of local galaxies.

8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph