Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The pc-scale structure and evolution of BL Lac PKS 0003-066   We present the results of global VLBI observations of the BL Lac object PKS
0003-066 at 2.3 and 8.6 GHz, over a 10 year period using data from new and
archived VLBA, geodetic VLBI, and global VLBI (including the use of new
disk-based recording and software correlation systems) observations.
Inter-continental baselines resolve this source into a compact core and three
jet components that move away from the core with proper motions ranging between
\~0.1 mas/yr for the outer jet component and ~1.4 mas/yr for the fastest inner
jet component, i.e. apparent speeds of ~2.0 c to ~21.6 c respectively. This
result is in contrast to previous studies of this source which did not reveal
significant jet motions from limited data sets. We find that the fast inner jet
components catch up to the more slowly moving outer jet components and interact
strongly, causing local brightening of the jet in the interaction. We document
the body of VLBI data for this source, as well as other supporting radio
observations, as a basis for future work that will investigate the underlying
physics of the pc-scale jet in PKS 0003-066.

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The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph