Next Article in Journal / Special Issue
The Optical Variability of the BL Lac AO 0235+164
Previous Article in Journal / Special Issue
The Classifications and Some Correlations for Fermi Blazars
Article Menu

Export Article

Open AccessArticle
Galaxies 2016, 4(3), 18; doi:10.3390/galaxies4030018

18–22 cm VLBA Observational Evidence for Toroidal B-Field Components in Six AGN Jets

1
Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, São Paulo 05508-090, Brasil
2
Physics Department, University College Cork, Cork, Ireland
*
Author to whom correspondence should be addressed.
Academic Editors: Jose L. Gómez, Alan P. Marscher and Svetlana G. Jorstad
Received: 5 July 2016 / Revised: 20 August 2016 / Accepted: 26 August 2016 / Published: 30 August 2016
(This article belongs to the Special Issue Blazars through Sharp Multi-wavelength Eyes)
View Full-Text   |   Download PDF [575 KB, uploaded 30 August 2016]   |  

Abstract

The formation of relativistic jets in Active Galactic Nuclei (AGN) is related to accretion onto their central supermassive black holes, and magnetic (B) fields are believed to play a central role in launching, collimating, and accelerating the jet streams from very compact regions out to kiloparsec scales. We present results of Faraday rotation studies based on Very Long Baseline Array (VLBA) data obtained at 18–22 cm for six well known AGN (OJ 287, 3C 279, PKS 1510-089, 3C 345, BL Lac, and 3C 454.3), which probe projected distances out to tens of parsecs from the observed cores. We have identified statistically significant, monotonic, transverse Faraday rotation gradients across the jets of all but one of these sources, indicating the presence of toroidal B fields, which may be one component of helical B fields associated with these AGN jets. View Full-Text
Keywords: AGN; relativistic jets; polarization; radio interferometry AGN; relativistic jets; polarization; radio interferometry
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Motter, J.C.; Gabuzda, D.C. 18–22 cm VLBA Observational Evidence for Toroidal B-Field Components in Six AGN Jets. Galaxies 2016, 4, 18.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Galaxies EISSN 2075-4434 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top