Studying magnetic fields in several parsec-scale AGN jets using Faraday Rotation
Abstract
We present multi-frequency radio observations from the Very Long Baseline Array (VLBA) of selected AGN that seem to have a B-field structure with a central "spine" of B-field orthogonal to the jet and a longitudinal B-field near one or both edges of the jet. Two explanations for this structure have been discussed in the literature: shocks making the central orthogonal field combined with a jet-medium interaction causing the longitudinal "sheath", or both components produced by a helical jet magnetic field. One way to investigate this structure is to look for gradients in the Faraday Rotation across the jet. We will discuss results for 0333+321, 1150+812 and 2037+511 providing evidence for the latter picture.
Cite
@article{arxiv.1102.0702,
title = {Studying magnetic fields in several parsec-scale AGN jets using Faraday Rotation},
author = {Andrea Reichstein and Denise Gabuzda},
journal= {arXiv preprint arXiv:1102.0702},
year = {2015}
}
Comments
From the proceedings of the 10th European VLBI Network Symposium and EVN Users Meeting: VLBI and the new generation of radio arrays, September 20-24, 2010, Manchester, UK. 6 Pages, 4 figures