Spine-sheath polarization structures in four active galactic nuclei jets

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dc.contributor.author Pushkarev, A. B.
dc.contributor.author Gabuzda, Denise
dc.contributor.author Vetukhnovskaya, Y. N.
dc.contributor.author Yakimov, V. E.
dc.date.accessioned 2017-11-07T09:38:58Z
dc.date.available 2017-11-07T09:38:58Z
dc.date.issued 2005
dc.identifier.citation Pushkarev, A. B., Gabuzda, D. C., Vetukhnovskaya, Y. N. and Yakimov, V. E. (2005) 'Spine–sheath polarization structures in four active galactic nuclei jets', Monthly Notices of the Royal Astronomical Society, 356(3), pp. 859-871. doi: 10.1111/j.1365-2966.2004.08535.x en
dc.identifier.volume 356
dc.identifier.issued 3
dc.identifier.startpage 859
dc.identifier.endpage 871
dc.identifier.issn 0035-8711
dc.identifier.uri http://hdl.handle.net/10468/4986
dc.identifier.doi 10.1111/j.1365-2966.2004.08535.x
dc.description.abstract We present the results of multifrequency (15 + 8 + 5 GHz) polarization Very Long Baseline Array (VLBA) observations of the three BL Lacertae objects 0745 + 241, 1418 + 546 and 1652 + 398 together with 5-GHz VLBI Space Observatory Programme (VSOP) observations of 1418 + 546 and 1.6- and 5-GHz VSOP observations of the blazar 1055 + 018. The jets of all these sources have polarization structure transverse to the jet axis, with the polarization E vectors aligned with the jet along the jet spine and 'sheaths' of orthogonal E vectors at one or both edges of the jet. The presence of polarization aligned with the jet near the 'spine' may indicate that the jets are associated with helical B fields that propogate outward with the jet flow; the presence of orthogonal polarization near the edges of the jet may likewise be a consequence of a helical jet B field, or may be owing to an interaction with the ambient medium on parsec scales. We have tentatively detected interknot polarization in 1055 + 018 with E aligned with the local jet direction, consistent with the possibility that the jet of this source is associated with a helical B field. en
dc.description.sponsorship Russian Foundation for Basic Research (project code No. 02-02-16305); International Association for the Promotion of Cooperation with Scientists from the New Independent States (Grant No. 2001–0669)
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Oxford University Press en
dc.relation.uri https://academic.oup.com/mnras/article-lookup/doi/10.1111/j.1365-2966.2004.08535.x
dc.rights © 2004, Royal Astronomical Society en
dc.subject Magnetic fields en
dc.subject Polarization en
dc.subject BL Lacertae objects en
dc.subject General en
dc.title Spine-sheath polarization structures in four active galactic nuclei jets en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Denise Gabuzda, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: d.gabuzda@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder Russian Foundation for Basic Research
dc.contributor.funder International Association for the Promotion of Cooperation with Scientists from the New Independent States
dc.description.status Peer reviewed en
dc.identifier.journaltitle Monthly Notices of the Royal Astronomical Society en
dc.internal.IRISemailaddress d.gabuzda@ucc.ie en


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