Spine-sheath polarization structures in four active galactic nuclei jets

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dc.contributor.authorPushkarev, A. B.
dc.contributor.authorGabuzda, Denise
dc.contributor.authorVetukhnovskaya, Y. N.
dc.contributor.authorYakimov, V. E.
dc.contributor.funderRussian Foundation for Basic Research
dc.contributor.funderInternational Association for the Promotion of Cooperation with Scientists from the New Independent States
dc.date.accessioned2017-11-07T09:38:58Z
dc.date.available2017-11-07T09:38:58Z
dc.date.issued2005
dc.description.abstractWe 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.sponsorshipRussian 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.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationPushkarev, 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.xen
dc.identifier.doi10.1111/j.1365-2966.2004.08535.x
dc.identifier.endpage871
dc.identifier.issn0035-8711
dc.identifier.issued3
dc.identifier.journaltitleMonthly Notices of the Royal Astronomical Societyen
dc.identifier.startpage859
dc.identifier.urihttps://hdl.handle.net/10468/4986
dc.identifier.volume356
dc.language.isoenen
dc.publisherOxford University Pressen
dc.relation.urihttps://academic.oup.com/mnras/article-lookup/doi/10.1111/j.1365-2966.2004.08535.x
dc.rights© 2004, Royal Astronomical Societyen
dc.subjectMagnetic fieldsen
dc.subjectPolarizationen
dc.subjectBL Lacertae objectsen
dc.subjectGeneralen
dc.titleSpine-sheath polarization structures in four active galactic nuclei jetsen
dc.typeArticle (peer-reviewed)en
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