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dc.contributor.authorGear, W.K.
dc.contributor.authorStevens, Jason
dc.contributor.authorHughes, D.H.
dc.contributor.authorLitchfield, S.J.
dc.contributor.authorRobson, E.I.
dc.contributor.authorTerasranta, H.
dc.contributor.authorValtaoja, E.
dc.contributor.authorSteppe, H.
dc.contributor.authorAller, M. F.
dc.contributor.authorAller, H. D.
dc.identifier.citationGear , W K , Stevens , J , Hughes , D H , Litchfield , S J , Robson , E I , Terasranta , H , Valtaoja , E , Steppe , H , Aller , M F & Aller , H D 1994 , ' A Comparison of the Radio / Submillimetre Spectra of Bl-Lacertae Objects and Flat Spectrum Radio Quasars ' , Monthly Notices of the Royal Astronomical Society , vol. 267 , no. 1 , pp. 167-186 .
dc.identifier.otherPURE: 523839
dc.identifier.otherPURE UUID: 9a656d41-d844-4735-bcd0-8afe613af643
dc.identifier.otherBibtex: urn:6c6f682fbec72ea4b89c6f22e4fcee32
dc.description.abstractWe present quasi-simultaneous radio, millimetre and submillimetre spectra of 22 BL Lac objects and 24 radio-loud, violently variable quasars. These data are used to test the hypothesis that BL Lacs and OVV quasars are fundamentally different objects. We find a considerable degree of consistency of the overall spectral shape in all sources and conclude that the same basic physical model applies to the continuum emission over this frequency range in both cases. There is clear evidence in the data for the BL Lacs to have flatter 150-375 GHz spectra, and we attribute the effect to an intrinsic difference between the underlying jets in the two types of object. A similar difference in the 37-270 GHz spectral indices between the two types can be attributed to a simple redshifting of the synchrotron self-absorption turnover.en
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.titleA Comparison of the Radio / Submillimetre Spectra of Bl-Lacertae Objects and Flat Spectrum Radio Quasarsen
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
rioxxterms.typeJournal Article/Review

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