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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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) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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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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1766070558188896256 |