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dc.contributor.authorMingo, B.
dc.contributor.authorCroston, J. H.
dc.contributor.authorHardcastle, M. J.
dc.contributor.authorBest, P. N.
dc.contributor.authorDuncan, K. J.
dc.contributor.authorMorganti, R.
dc.contributor.authorRottgering, H. J. A.
dc.contributor.authorSabater, J.
dc.contributor.authorShimwell, T. W.
dc.contributor.authorWilliams, W. L.
dc.contributor.authorBrienza, M.
dc.contributor.authorGurkan, G.
dc.contributor.authorMahatma, V. H.
dc.contributor.authorMorabito, L. K.
dc.contributor.authorPrandoni, I.
dc.contributor.authorBondi, M.
dc.contributor.authorIneson, J.
dc.contributor.authorMooney, S.
dc.date.accessioned2019-08-01T16:29:25Z
dc.date.available2019-08-01T16:29:25Z
dc.date.issued2019-09-01
dc.identifier.citationMingo , B , Croston , J H , Hardcastle , M J , Best , P N , Duncan , K J , Morganti , R , Rottgering , H J A , Sabater , J , Shimwell , T W , Williams , W L , Brienza , M , Gurkan , G , Mahatma , V H , Morabito , L K , Prandoni , I , Bondi , M , Ineson , J & Mooney , S 2019 , ' Revisiting the Fanaroff-Riley dichotomy and radio-galaxy morphology with the LOFAR Two-Metre Sky Survey (LoTSS) ' , Monthly Notices of the Royal Astronomical Society . https://doi.org/10.1093/mnras/stz1901
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 17074396
dc.identifier.otherPURE UUID: 406c2235-1787-4280-b3ba-cdb167ae2355
dc.identifier.otherArXiv: http://arxiv.org/abs/1907.03726v1
dc.identifier.otherORCID: /0000-0001-7315-1596/work/62750961
dc.identifier.urihttp://hdl.handle.net/2299/21540
dc.description21 pages, 4 tables, 16 Figures. Accepted for publication on Monthly Notices of the Royal Astronomical Society (MNRAS). Our LoTSS morphological catalogue containing classifications for 5805 extended radio-loud AGN is available from www.lofar-surveys.org/releases.html
dc.description.abstractThe relative positions of the high and low surface brightness regions of radio-loud active galaxies in the 3CR sample were found by Fanaroff and Riley to be correlated with their luminosity. We revisit this canonical relationship with a sample of 5805 extended radio-loud AGN from the LOFAR Two-Metre Sky Survey (LoTSS), compiling the most complete dataset of radio-galaxy morphological information obtained to date. We demonstrate that, for this sample, radio luminosity does *not* reliably predict whether a source is edge-brightened (FRII) or centre-brightened (FRI). We highlight a large population of low-luminosity FRIIs, extending three orders of magnitude below the traditional FR break, and demonstrate that their host galaxies are on average systematically fainter than those of high-luminosity FRIIs and of FRIs matched in luminosity. This result supports the jet power/environment paradigm for the FR break: low-power jets may remain undisrupted and form hotspots in lower mass hosts. We also find substantial populations that appear physically distinct from the traditional FR classes, including candidate restarting sources and ``hybrids''. We identify 459 bent-tailed sources, which we find to have a significantly higher SDSS cluster association fraction (at $zen
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsOpen
dc.subjectastro-ph.GA
dc.titleRevisiting the Fanaroff-Riley dichotomy and radio-galaxy morphology with the LOFAR Two-Metre Sky Survey (LoTSS)en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2019-09-01
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stz1901
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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