Authors:
Gomez, JL; Marscher, AP; Alberdi, A; Gabuzda, DC
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 degrees within 2 mas 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.
URL:
https://ui.adsabs.harvard.edu/#abs/1999ApJ...519..642G/abstract
Keywords:
BL Lacertae objects : individual (0735+178); galaxies : active; galaxies : jets; polarization; radio continuum : galaxies; techniques : interferometric