Parsec-scale rotation-measure distribution in the quasar 3C 147 at 8 GHz
Abstract
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 (∼-1800 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.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 2004
- DOI:
- 10.1051/0004-6361:20034313
- Bibcode:
- 2004A&A...415..477Z
- Keywords:
-
- polarization;
- galaxies: jets;
- galaxies: magnetic fields;
- galaxies: quasars: individual: 3C 147