Radio polarimetric observations of Active Galactic Nuclei can reveal the magnetic field structure in the parsec-scale jets of these sources. We have observed the γ-ray blazar 3C 273 as part of our multi-frequency survey with the Very Long Baseline Array to study Faraday rotation in a large sample of jets. Our observations re-confirm the transverse rotation measure gradient in 3C 273. For the first time the gradient is seen to cross zero which is further indication for a helical magnetic field and spine-sheath structure in the jet. We believe the difference to previous epochs is due to a different part of the jet being illuminated in our observations.
|Number of pages||6|
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2012|
|MoE publication type||A1 Journal article-refereed|
|Event||International Workshop on Beamed and Unbeamed Gamma-Rays from Galaxies - Muonio, Finland|
Duration: 11 Apr 2011 → 15 Apr 2011