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arxiv: astro-ph/0101483 · v1 · submitted 2001-01-26 · 🌌 astro-ph

Polarimetric VLBI observations of 0735+178

I. Agudo (1) , J. L. Gomez (1) , D. C. Gabuzda (2) , J. C. Guirado (3) , A. Alberdi (1) , A. P. Marscher (4) , M. A. Aloy (5) , J. M. Marti (3) ((1) IAA
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Spain; (2) JIVE The Netherlands; (3) Univ. of Valencia Spain; (4) Boston Univ. USA; (5) MPIfA Germany)
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keywords componentsjetspolarimetricprecessionvlbiagnsalwaysanalysis
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We present a new centimeter polarimetric VLBI image of the BL Lac object 0735+178. This source exhibits one of the most pronounced curvatures observed in jets of AGNs, with two sharp apparent bends of 90 degrees within the inner 2 milliarcseconds from the core. Through the analysis of the data gathered over the past decades we study whether this curvature is produced by precession of the jet with ejection of ballistic components, or a precession in such a way that components' velocity vector are always parallel to the jet axis. These possibilities are also studied by comparison with 3D hydrodynamic relativistic simulations of precessing jets.

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