Faraday rotation in the MOJAVE blazars: 3C 273 a case study

T. Hovatta; M. L. Lister; M. F. Aller; H. D. Aller; D. C. Homan; Y. Y. Kovalev; A. B. Pushkarev; T. Savolainen

doi:10.1088/1742-6596/355/1/012008

Faraday rotation in the MOJAVE blazars: 3C 273 a case study

T. Hovatta, M. L. Lister, M. F. Aller, H. D. Aller, D. C. Homan, Y. Y. Kovalev, A. B. Pushkarev, T. Savolainen

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Abstract

Radio polarimetric observations of Active Galactic Nuclei can reveal the magnetic field structure in the parsec-scale jets of these sources. We have observed the γ-ray blazar 3C 273 as part of our multi-frequency survey with the Very Long Baseline Array to study Faraday rotation in a large sample of jets. Our observations re-confirm the transverse rotation measure gradient in 3C 273. For the first time the gradient is seen to cross zero which is further indication for a helical magnetic field and spine-sheath structure in the jet. We believe the difference to previous epochs is due to a different part of the jet being illuminated in our observations.

Original language	English
Article number	012008
Number of pages	6
Journal	Journal of Physics: Conference Series
Volume	355
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/355/1/012008
Publication status	Published - 2012
MoE publication type	A1 Journal article-refereed
Event	International Workshop on Beamed and Unbeamed Gamma-Rays from Galaxies - Muonio, Finland Duration: 11 Apr 2011 → 15 Apr 2011

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10.1088/1742-6596/355/1/012008

http://adsabs.harvard.edu/abs/2012JPhCS.355a2008H

Cite this

@article{f64b6e40f49e4f4bbf31858ab3325baa,

title = "Faraday rotation in the MOJAVE blazars: 3C 273 a case study",

abstract = "Radio polarimetric observations of Active Galactic Nuclei can reveal the magnetic field structure in the parsec-scale jets of these sources. We have observed the γ-ray blazar 3C 273 as part of our multi-frequency survey with the Very Long Baseline Array to study Faraday rotation in a large sample of jets. Our observations re-confirm the transverse rotation measure gradient in 3C 273. For the first time the gradient is seen to cross zero which is further indication for a helical magnetic field and spine-sheath structure in the jet. We believe the difference to previous epochs is due to a different part of the jet being illuminated in our observations.",

author = "T. Hovatta and Lister, {M. L.} and Aller, {M. F.} and Aller, {H. D.} and Homan, {D. C.} and Kovalev, {Y. Y.} and Pushkarev, {A. B.} and T. Savolainen",

year = "2012",

doi = "10.1088/1742-6596/355/1/012008",

language = "English",

volume = "355",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "Institute of Physics Publishing ",

number = "1",

note = "International Workshop on Beamed and Unbeamed Gamma-Rays from Galaxies ; Conference date: 11-04-2011 Through 15-04-2011",

}

TY - JOUR

T1 - Faraday rotation in the MOJAVE blazars

T2 - International Workshop on Beamed and Unbeamed Gamma-Rays from Galaxies

AU - Hovatta, T.

AU - Lister, M. L.

AU - Aller, M. F.

AU - Aller, H. D.

AU - Homan, D. C.

AU - Kovalev, Y. Y.

AU - Pushkarev, A. B.

AU - Savolainen, T.

PY - 2012

Y1 - 2012

N2 - Radio polarimetric observations of Active Galactic Nuclei can reveal the magnetic field structure in the parsec-scale jets of these sources. We have observed the γ-ray blazar 3C 273 as part of our multi-frequency survey with the Very Long Baseline Array to study Faraday rotation in a large sample of jets. Our observations re-confirm the transverse rotation measure gradient in 3C 273. For the first time the gradient is seen to cross zero which is further indication for a helical magnetic field and spine-sheath structure in the jet. We believe the difference to previous epochs is due to a different part of the jet being illuminated in our observations.

AB - Radio polarimetric observations of Active Galactic Nuclei can reveal the magnetic field structure in the parsec-scale jets of these sources. We have observed the γ-ray blazar 3C 273 as part of our multi-frequency survey with the Very Long Baseline Array to study Faraday rotation in a large sample of jets. Our observations re-confirm the transverse rotation measure gradient in 3C 273. For the first time the gradient is seen to cross zero which is further indication for a helical magnetic field and spine-sheath structure in the jet. We believe the difference to previous epochs is due to a different part of the jet being illuminated in our observations.

U2 - 10.1088/1742-6596/355/1/012008

DO - 10.1088/1742-6596/355/1/012008

M3 - Article

SN - 1742-6588

VL - 355

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012008

Y2 - 11 April 2011 through 15 April 2011

ER -

Faraday rotation in the MOJAVE blazars: 3C 273 a case study

Abstract

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