The twisted parsec-scale structure of 0735+178

Abstract

We present two epoch polarimetric images of the BL Lac object 0735+178 obtained with the Very Long Baseline Array at 22 and 43 GHz. These images provide the highest resolution observations of this source to date, and show a twisted jet with two sharp apparent bends of 90 deg. within two milliarcseconds of the core. The magnetic field appears to smoothly follow one of the bends in the jet, suggesting that this structure may be the result of a precessing nozzle in the jet of 0735+178. Proper motion information is not conclusive as to whether the twisted geometry is the result of knots moving ballistically or following the direction of the jet axis.

6 pages, accepted for publication in ApJ

References in corpus (2)

• Sub-milliarcsecond Imaging of Quasars and AGN
• Dynamics and Structure of Three-Dimensional Poloidally Magnetized Supermagnetosonic Jets

Cited by in corpus (12)

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• Parsec-Scale Blazar Monitoring: Proper Motions
• High--Resolution 3D Simulations of Relativistic Jets
• Ten-year optical monitoring of PKS 0735+178: historical comparison, multiband behaviour and variability timescales
• On the source of Faraday rotation in the jet of the radio galaxy 3C120
• Optical Monitoring of PKS 1510-089: A Binary Black Hole System?
• Unusual optical quiescence of the classical BL Lac object PKS 0735+178 on intranight time scale
• The milliarcsecond-scale jet of PKS 0735+178 during quiescence
• Changes in the trajectory of the radio jet in 0735+178?
• The variability of blazars throughout the electromagnetic spectrum
• Helical motion and the origin of QPO in blazar-type sources
• The milliarcsecond-scale jet in the quasar J1625+4134