Next Article in Journal
Multi-Band Intra-Night Optical Variability of BL Lacertae
Next Article in Special Issue
Magnetic Field Studies in BL Lacertae through Faraday Rotation and a Novel Astrometric Technique
Previous Article in Journal / Special Issue
Multi-Frequency VLBA Polarimetry and the Twin-Jet Quasar 0850+581
Article Menu
Issue 4 (December) cover image

Export Article

Open AccessFeature PaperArticle
Galaxies 2017, 5(4), 93;

Linear Polarization Properties of Parsec-Scale AGN Jets

Crimean Astrophysical Observatory, Crimea, 98409 Nauchny, Russia
Astro Space Center of Lebedev Physical Institute, Profsoyuznaya 84/32, 117997 Moscow, Russia
Moscow Institute of Physics and Technology, Dolgoprudny, Institutsky per., 9, 141700 Moscow Region, Russia
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
Department of Physics and Astronomy, Purdue University, 525 Northwestern Avenue, West Lafayette, IN 47907, USA
Metsähovi Radio Observatory, Aalto University, Metsähovintie 114, FI-02540 Kylmälä, Finland
Department of Electronics and Nanoengineering, Aalto University, PL 15500, FI-00076 Aalto, Finland
Department of Astronomy, University of Michigan, 311 West Hall, 1085 S. University Avenue, Ann Arbor, MI 48109, USA
This paper is an extended version of our paper published in Polarised Emission from Astrophysical Jets.
Author to whom correspondence should be addressed.
Received: 6 October 2017 / Revised: 21 November 2017 / Accepted: 27 November 2017 / Published: 1 December 2017
(This article belongs to the Special Issue Polarised Emission from Astrophysical Jets)
Full-Text   |   PDF [9002 KB, uploaded 1 December 2017]   |  


We used 15 GHz multi-epoch Very Long Baseline Array (VLBA) polarization sensitive observations of 484 sources within a time interval 1996–2016 from the MOJAVE program, and also from the NRAO data archive. We have analyzed the linear polarization characteristics of the compact core features and regions downstream, and their changes along and across the parsec-scale active galactic nuclei (AGN) jets. We detected a significant increase of fractional polarization with distance from the radio core along the jet as well as towards the jet edges. Compared to quasars, BL Lacs have a higher degree of polarization and exhibit more stable electric vector position angles (EVPAs) in their core features and a better alignment of the EVPAs with the local jet direction. The latter is accompanied by a higher degree of linear polarization, suggesting that compact bright jet features might be strong transverse shocks, which enhance magnetic field regularity by compression. View Full-Text
Keywords: active galactic nuclei; relativistic jets; linear polarization; radio interferometry active galactic nuclei; relativistic jets; linear polarization; radio interferometry

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).

Share & Cite This Article

MDPI and ACS Style

Pushkarev, A.B.; Kovalev, Y.Y.; Lister, M.L.; Savolainen, T.; Aller, M.F.; Aller, H.D.; Hodge, M.A. Linear Polarization Properties of Parsec-Scale AGN Jets. Galaxies 2017, 5, 93.

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



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