The Use of Faraday Rotation Sign Maps as a Diagnostic for Helical Jet Magnetic Fields

We present maps of the sign of the Faraday Rotation measure [sign(RM)] obtained from multi-frequency radio observations on the Very Long Baseline Array (VLBA). Many of the Active Galactic Nuclei (AGN) considered have B-field structures with a central "spine" of B-field orthogonal to the je...

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Main Authors: Reichstein, Andrea, Gabuzda, Denise
Format: Text
Language:unknown
Published: arXiv 2011
Subjects:
Cosmology and Nongalactic Astrophysics astro-ph.CO
FOS Physical sciences
Faraday
Muonio
Online Access:https://dx.doi.org/10.48550/arxiv.1109.2507
https://arxiv.org/abs/1109.2507
id ftdatacite:10.48550/arxiv.1109.2507
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spelling ftdatacite:10.48550/arxiv.1109.2507 2023-05-15T17:13:27+02:00 The Use of Faraday Rotation Sign Maps as a Diagnostic for Helical Jet Magnetic Fields Reichstein, Andrea Gabuzda, Denise 2011 https://dx.doi.org/10.48550/arxiv.1109.2507 https://arxiv.org/abs/1109.2507 unknown arXiv https://dx.doi.org/10.1088/1742-6596/355/1/012021 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Cosmology and Nongalactic Astrophysics astro-ph.CO FOS Physical sciences article-journal Article ScholarlyArticle Text 2011 ftdatacite https://doi.org/10.48550/arxiv.1109.2507 https://doi.org/10.1088/1742-6596/355/1/012021 2022-04-01T14:05:08Z We present maps of the sign of the Faraday Rotation measure [sign(RM)] obtained from multi-frequency radio observations on the Very Long Baseline Array (VLBA). Many of the Active Galactic Nuclei (AGN) considered have B-field structures with a central "spine" of B-field orthogonal to the jet and/or a longitudinal B-field near one or both edges of the jet. This structure can plausibly be interpreted as being caused by a helical/toroidal jet magnetic field. Faraday Rotation is a rotation of the plane of polarization that occurs when the polarized radiation passes through a magnetized plasma. The sign of the RM is determined by the direction of the line-of-sight B-Field in the region causing the Faraday Rotation, and an ordered toroidal or helical magnetic field associated with an AGN jet will thus produce a distinctive bilateral distribution of positive and negative RMs across the jet. We present and discuss sign(RM) maps and their possible interpretation regarding the magnetic field geometries for several sources. : From the proceedings of Beamed and Unbeamed Gamma-Rays from Galaxies, April 11-15, 2011, Muonio, Finland. 5 pages, 4 figures Text Muonio DataCite Metadata Store (German National Library of Science and Technology) Faraday ENVELOPE(-64.256,-64.256,-65.246,-65.246) Muonio ENVELOPE(23.833,23.833,67.833,67.833)
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
topic Cosmology and Nongalactic Astrophysics astro-ph.CO
FOS Physical sciences
spellingShingle Cosmology and Nongalactic Astrophysics astro-ph.CO
FOS Physical sciences
Reichstein, Andrea
Gabuzda, Denise
The Use of Faraday Rotation Sign Maps as a Diagnostic for Helical Jet Magnetic Fields
topic_facet Cosmology and Nongalactic Astrophysics astro-ph.CO
FOS Physical sciences
description We present maps of the sign of the Faraday Rotation measure [sign(RM)] obtained from multi-frequency radio observations on the Very Long Baseline Array (VLBA). Many of the Active Galactic Nuclei (AGN) considered have B-field structures with a central "spine" of B-field orthogonal to the jet and/or a longitudinal B-field near one or both edges of the jet. This structure can plausibly be interpreted as being caused by a helical/toroidal jet magnetic field. Faraday Rotation is a rotation of the plane of polarization that occurs when the polarized radiation passes through a magnetized plasma. The sign of the RM is determined by the direction of the line-of-sight B-Field in the region causing the Faraday Rotation, and an ordered toroidal or helical magnetic field associated with an AGN jet will thus produce a distinctive bilateral distribution of positive and negative RMs across the jet. We present and discuss sign(RM) maps and their possible interpretation regarding the magnetic field geometries for several sources. : From the proceedings of Beamed and Unbeamed Gamma-Rays from Galaxies, April 11-15, 2011, Muonio, Finland. 5 pages, 4 figures
format Text
author Reichstein, Andrea
Gabuzda, Denise
author_facet Reichstein, Andrea
Gabuzda, Denise
author_sort Reichstein, Andrea
title The Use of Faraday Rotation Sign Maps as a Diagnostic for Helical Jet Magnetic Fields
title_short The Use of Faraday Rotation Sign Maps as a Diagnostic for Helical Jet Magnetic Fields
title_full The Use of Faraday Rotation Sign Maps as a Diagnostic for Helical Jet Magnetic Fields
title_fullStr The Use of Faraday Rotation Sign Maps as a Diagnostic for Helical Jet Magnetic Fields
title_full_unstemmed The Use of Faraday Rotation Sign Maps as a Diagnostic for Helical Jet Magnetic Fields
title_sort use of faraday rotation sign maps as a diagnostic for helical jet magnetic fields
publisher arXiv
publishDate 2011
url https://dx.doi.org/10.48550/arxiv.1109.2507
https://arxiv.org/abs/1109.2507
long_lat ENVELOPE(-64.256,-64.256,-65.246,-65.246)
ENVELOPE(23.833,23.833,67.833,67.833)
geographic Faraday
Muonio
geographic_facet Faraday
Muonio
genre Muonio
genre_facet Muonio
op_relation https://dx.doi.org/10.1088/1742-6596/355/1/012021
op_rights arXiv.org perpetual, non-exclusive license
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
op_doi https://doi.org/10.48550/arxiv.1109.2507
https://doi.org/10.1088/1742-6596/355/1/012021
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