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dc.contributor.authorKharb, P.
dc.contributor.authorO'Dea, C.P.
dc.contributor.authorBaum, S.A.
dc.contributor.authorHardcastle, M.J.
dc.contributor.authorDicken, D.
dc.contributor.authorCroston, J. H.
dc.contributor.authorMingo, B.
dc.contributor.authorNoel-Storr, J.
dc.date.accessioned2015-09-10T12:58:45Z
dc.date.available2015-09-10T12:58:45Z
dc.date.issued2014-06-01
dc.identifier.citationKharb , P , O'Dea , C P , Baum , S A , Hardcastle , M J , Dicken , D , Croston , J H , Mingo , B & Noel-Storr , J 2014 , ' Very Large Baseline Array observations of Mrk 6 : probing the jet-lobe connection ' , Monthly Notices of the Royal Astronomical Society , vol. 440 , no. 4 , pp. 2976-2987 . https://doi.org/10.1093/mnras/stu421
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 9202516
dc.identifier.otherPURE UUID: 2c9ac90c-2900-4693-b284-c6eedec66bba
dc.identifier.otherScopus: 84899840179
dc.identifier.urihttp://hdl.handle.net/2299/16426
dc.description.abstractWe present the results of high-resolution VLBI (very long baseline interferometry) observations at 1.6 and 4.9 GHz of the radio-loud Seyfert galaxy, Mrk 6. These observations are able to detect a compact radio core in this galaxy for the first time. The core has an inverted spectral index (α1.6 4.9 = +1.0 ± 0.2) and a brightness temperature of 1 × 108 K. Three distinct radio components, which resemble jet elements and/or hotspots, are also detected. The position angles of these elongated jet elements point not only to a curved jet in Mrk 6, but also towards a connection between the AGN and the kpc-scale radio lobes/bubbles in this galaxy. Firmer constraints on the star formation rate provided by new Herschel observations (SFR <0.8 M⊙ yr-1) make the starburst-wind-powered bubble scenario implausible. From plasma speeds, obtained via prior Chandra X-ray observations, and ram pressure balance arguments for the interstellar medium and radio bubbles, the north-south bubbles are expected to take 7.5 × 106 yr to form, and the east-west bubbles 1.4 × 106 yr. We suggest that the jet axis has changed at least once in Mrk 6 within the last ≈107 yr. A comparison of the nuclear radio-loudness of Mrk 6 and a small sample of Seyfert galaxies with a subset of low-luminosity FR I radio galaxies reveals a continuum in radio properties.en
dc.format.extent12
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsOpen
dc.subjectGalaxies: active
dc.subjectGalaxies: individual: mrk 6
dc.subjectGalaxies: jets
dc.subjectGalaxies: seyfert
dc.subjectTechniques: high angular resolution
dc.subjectTechniques: interferometric
dc.titleVery Large Baseline Array observations of Mrk 6 : probing the jet-lobe connectionen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2014-06-01
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stu421
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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