| Issue |
A&A
Volume 421, Number 3, July III 2004
|
|
|---|---|---|
| Page(s) | 839 - 846 | |
| Section | Extragalactic astronomy | |
| DOI | https://doi.org/10.1051/0004-6361:20035816 | |
| Published online | 29 June 2004 | |
Extreme superluminal motion in the curved Jet of PKS 1502+106*
1
Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, PR China
2
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, PR China
3
Istituto di Radioastronomia del CNR, via Gobetti 101, 40129 Bologna, Italy
Corresponding author: T. An, antao@center.shao.ac.cn
Received:
6
December
2003
Accepted:
16
March
2004
In this paper we present a multifrequency and multiepoch study of
PKS 1502+106 at radio frequencies. The analysis is
based on an EVN (European VLBI Network) dataset at 5 GHz and
archive VLBA (Very Long Baseline Array) datasets at 2.3, 8.3, 24.4
and 43.1 GHz over a period of 8 years. The source is characterized
by a multi-component one-sided jet at all epochs. The
high-resolution images at 5, 8.3, 24.4 and 43.1 GHz show a curved
jet morphology in the source. The radio core brightness
temperature approaches the equipartition limit. Superluminal
motions of 
, 
, 
and
are measured in four distinct components of the
jet. Our analysis supports the idea that the relativistic jet in
PKS 1502+106 is characterised by extreme beaming and
that its radio properties are similar to those of γ-ray
loud sources.
Key words: galaxies: jets / quasars: general / quasars: individual: PKS 1502+106
© ESO, 2004
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