Next Article in Journal / Special Issue
Optical Polarimetry and Radio Observations of PKS1510-089 between 2009 and 2013
Previous Article in Journal / Special Issue
Polarimetric Monitoring of Jets with Kanata Telescope
Article Menu
Issue 1 (March) cover image

Export Article

Open AccessFeature PaperArticle
Galaxies 2018, 6(1), 17;

Constraints on Particles and Fields from Full Stokes Observations of AGN

Department of Physics, Denison University, Granville, OH 43023, USA
Tuorla Observatory, University of Turku, Väisäläntie 20, 21500 Piikkiö, Finland
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, 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
Crimean Astrophysical Observatory, Crimea, 98409 Nauchny, Russia
Aalto University Metsähovi Radio Observatory, Metsähovintie 114, 02540 Kylmälä, Finland
Department of Electronics and Nanoengineering, Aalto University, PL 15500, FI-00076 Aalto, Finland
Author to whom correspondence should be addressed.
Received: 14 December 2017 / Revised: 10 January 2018 / Accepted: 10 January 2018 / Published: 29 January 2018
(This article belongs to the Special Issue Polarised Emission from Astrophysical Jets)
Full-Text   |   PDF [351 KB, uploaded 29 January 2018]   |  


Combined polarization imaging of radio jets from Active Galactic Nuclei (AGN) in circular and linear polarization, also known as full Stokes imaging, has the potential to constrain both the magnetic field structure and particle properties of jets. Although only a small fraction of the emission when detected, typically less than a few tenths of a percent but up to as much as a couple of percent in the strongest resolved sources, circular polarization directly probes the magnetic field and particles within the jet itself and is not expected to be modified by external screens. A key to using full Stokes observations to constrain jet properties is obtaining a better understanding of the emission of circular polarization, including its variability and spectrum. We discuss what we have learned so far from parsec scale monitoring observations in the MOJAVE program and from multi-frequency observations of selected AGN. View Full-Text
Keywords: Galaxies; AGN; Quasars; BL Lacertae Objects; non-thermal emission Galaxies; AGN; Quasars; BL Lacertae Objects; non-thermal emission

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

Homan, D.C.; Hovatta, T.; Kovalev, Y.Y.; Lister, M.L.; Pushkarev, A.B.; Savolainen, T. Constraints on Particles and Fields from Full Stokes Observations of AGN. Galaxies 2018, 6, 17.

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