Faraday rotation in the MOJAVE blazars: 3C 273 a case study
Abstract
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 gamma-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.
Cite
@article{arxiv.1108.1514,
title = {Faraday rotation in the MOJAVE blazars: 3C 273 a case study},
author = {T. Hovatta and M. L. Lister and M. F. Aller and H. D. Aller and D. C. Homan and Y. Y. Kovalev and A. B Pushkarev and T. Savolainen},
journal= {arXiv preprint arXiv:1108.1514},
year = {2012}
}
Comments
6 pages, 3 figures. To appear in the proceedings of "Beamed and Unbeamed Gamma-rays from Galaxies", held in Muonio, Finland, April 11-15, 2011. Journal of Physics: Conference Series