Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parsec-scale structures of radio galaxies in the 2-Jy sample   In this paper we present the results of VLBI observations of six radio
galaxies belonging to the 2-Jy sample. The selected objects are 3C17, PKS
0620-52, PKS 0625-35, PKS 1318-43, PKS 1333-33 and 3C317. The first is a high
power radio galaxy and the remainder are low power objects. Our observations
were carried out with a set of different arrays and frequencies, and cover a
range of resolutions from a few mas to a few tens of mas. Parsec-scale images
are presented and discussed in the light of unification for radio loud
galaxies. Estimates for the intrinsic plasma speed in these objects in the
proximity of the parsec-scale core and tehir orientation to the line of sight
are in agreement with the predictions from unified models and their optical and
X-ray properties.

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The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys