Faraday rotation in the MOJAVE blazars: 3C 273 a case study
Faraday rotation in the MOJAVE blazars: 3C 273 a case study
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莫哈韦耀变体中的法拉第旋转:3C 273 案例研究
DOI:
10.1088/1742-6596/355/1/012008
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
T. Savolainen
中科院分区:
文献类型:
--
作者:
T. Hovatta;M. Lister;M. Aller;H. Aller;D. Homan;Y. Kovalev;A. Pushkarev;T. Savolainen
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.