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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/2221
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dc.contributor.authorNair, Sunita-
dc.contributor.authorGarrett, M.A.-
dc.date.accessioned2007-04-03T09:35:05Z-
dc.date.available2007-04-03T09:35:05Z-
dc.date.issued2005-10-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2005, Vol.362, Issue 4, p1157-1166.en
dc.identifier.issn0035-8711-
dc.identifier.urihttp://hdl.handle.net/2289/2221-
dc.descriptionRestricted Access. An open access version is available at arXiv.org.(one of the alternative locations)en
dc.description.abstractRecent radio very long baseline interferometry observations of the complex gravitationally lensed system PKS 1830-211 have thrown up some questions with regard to the processes occurring at the heart of the blazar source at a redshift of 2.51, which is viewed almost straight down the jet axis. This work links, by a model of a helical jet tracked by ballistically ejected plasmons from a precessing nozzle, observations on the scale of tens of microarcseconds to those on the scale of milliarcseconds. An observed jet precession period of 1.08 yr is inferred from the model, translating to an intrinsic period of 30.8 yr for a source at redshift zs= 2.51 and an assumed jet bulk velocity β of 0.99c. This fits well with the picture of the active galactic nucleus hosting a binary black hole system at its centre, with the jet emitted by one member of the system and the precession as being a result of its orbital motion around its companion.en
dc.format.extent8338 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherBlackwell Publishing for the Royal Astronomical Societyen
dc.relation.urihttp://arxiv.org/abs/astro-ph/0507015en
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2005MNRAS.362.1157Nen
dc.relation.urihttp://dx.doi.org/10.1111/j.1365-2966.2005.09355.xen
dc.rights(2005) Blackwell Publishing for the Royal Astronomical Societyen
dc.subjectGravitational lensingen
dc.subjectGalaxies: activeen
dc.titleHelical jet in the gravitationally lensed blazar PKS1830-211en
dc.typeArticleen
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