2011/02/03 by Andrea Reichstein, Reichstein, Andrea, D. C. Gabuzda +2
Engineering · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Particle accelerators and beam dynamics #Radio Astronomy Observations and Technology #astro-ph.CO
paper · pdf · doi:10.48550/arxiv.1102.0702
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
arxiv created 2011/02/03 · openalex publication_date 2011/02/03 · arxiv updated 2015/03/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.