Linear polarization properties of parsec-scale AGN jets
Loading...
Access rights
openAccess
CC BY
CC BY
© 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2017-12-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
Galaxies, Volume 5, issue 4
Abstract
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.Description
Keywords
Active galactic nuclei, Linear polarization, Radio interferometry, Relativistic jets
Other note
Citation
Pushkarev, A B, Kovalev, Y Y, Lister, M L, Savolainen, T, Aller, M F, Aller, H D & Hodge, M A 2017, ' Linear polarization properties of parsec-scale AGN jets ', Galaxies, vol. 5, no. 4, 93 . https://doi.org/10.3390/galaxies5040093