1. The innermost regions of the jet in NRAO 150.
- Author
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Molina, Sol N., Agudo, I., and Gómez, J. L.
- Subjects
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QUASARS , *POLARIZING microscopes , *UHF diodes , *ASTROPHYSICAL jets - Abstract
NRAO 150 is a very bright millimeter to radio quasar at redshift z=1.52 for which ultra-high-resolution VLBI monitoring has revealed a counter-clockwise jet-position-angle wobbling at an angular speed ~11°/yr in the innermost regions of the jet. In this paper we present new total and linearly polarized VLB A images at 43 GHz extending previous studies to cover the evolution of the jet in NRAO 150 between 2006 and early 2009. We propose a new scenario to explain the counter-clockwise rotation of the jet position angle based on a helical motion of the components in a jet viewed faced-on. This alternative scenario is compatible with the interpretation suggested in previous works once the indetermination of the absolute position of the self-calibrated VLBI images is taken into account. Fitting of the jet components motion to a simple internal rotation kinematical model shows that this scenario is a likely alternative explanation for the behavior of the innermost regions in the jet of NRAO 150. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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