AAS 201st Meeting, January, 2003
Session 86. Radio Galaxies and Jets
Poster, Wednesday, January 8, 2003, 9:20am-6:30pm, Exhibit Hall AB

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[86.05] Non-Ballistic Motions in Relativistic Jets

D. C. Homan (National Radio Astronomy Observatory)

We present results from the 2cm Very Long Baseline Array (VLBA) survey of motions in relativistic jets (Kellermann et al. 1998; Zensus et al. 2002). In particular, we discuss the distribution of non-ballistic motions and present several examples from our sample. The non-ballistic motions we observe are generally in the direction of the downstream jet emission, providing evidence that jet features follow streaming flows in curved, bent jets. We also discuss the jet of the quasar 3C279, which displays a distinct change in the motion of a bright superluminal component. The new motion for this component is along a parallel track to the motion of an older superluminal component, suggesting collimation of the jet may still be occurring at radii (de-projected) of a kiloparsec or more.

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Bulletin of the American Astronomical Society, 34, #4
© 2002. The American Astronomical Soceity.