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

被引：3

作者：

Hovatta, T. ^{[1
,2
]}

Lister, M. L. ^{[2
]}

Aller, M. F. ^{[3
]}

Aller, H. D. ^{[3
]}

Homan, D. C. ^{[4
]}

Kovalev, Y. Y. ^{[5
,6
]}

Pushkarev, A. B. ^{[7
,8
]}

Savolainen, T. ^{[6
]}

机构：

[1] CALTECH, Cahill Lab Astron & Astrophys, Pasadena, CA 91125 USA

[2] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA

[3] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[4] Denison Univ, Dept Phys & Astron, Granville, OH 43023 USA

[5] PN Lebedev Phys Inst, Astro Space Ctr, Moscow 117997, Russia

[6] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[7] Pulkovo Observ, St Petersburg 196140, Russia

[8] Crimean Astrophys Observ, UA-98409 Nauchnyi, Crimea, Ukraine

来源：

INTERNATIONAL WORKSHOP ON BEAMED AND UNBEAMED GAMMA-RAYS FROM GALAXIES | 2012年 / 355卷

关键词：

HELICAL MAGNETIC-FIELD; ACTIVE GALACTIC NUCLEI; MEASURE GRADIENTS; JET; 3C-273;

D O I：

10.1088/1742-6596/355/1/012008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 gamma-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.

引用

页数：6

共 21 条

[1] A helical magnetic field in the jet of 3C 273 [J].