Parsec-scale rotation-measure distribution in the quasar 3C 147 at 8 GHz
National Astronomical Observatories, Chinese Academy of Science, A20 Datun Road, Chaoyang District, Beijing 100012, PR China
2 Department of Physics, University College Cork, Cork, Ireland
Corresponding author: H. Y. Zhang, email@example.com
Accepted: 28 October 2003
VLBA polarization observations of the high-rotation-measure source 3C 147 were made at four frequencies in the available 8 GHz band. The distribution of total flux and rotation measure across the source has been imaged. The rotation measure of the inner jet of the source ( rad m-2) is consistent with previous results. After removing the rotation of the plane of polarization due to a foreground screen, the derived intrinsic magnetic field structure of the source on parsec scales is roughly transverse to the predominant jet direction, indicating the presence of relativistic shocks or a dominant toroidal jet B-field component.
Key words: polarization / galaxies: jets / galaxies: magnetic fields / galaxies: quasars: individual: 3C 147
© ESO, 2004