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dc.contributor.authorHardcastle, M.J.
dc.contributor.authorWorrall, D.M.
dc.contributor.authorBirkinshaw, M.
dc.date.accessioned2007-12-17T09:51:40Z
dc.date.available2007-12-17T09:51:40Z
dc.date.issued1999
dc.identifier.citationHardcastle , M J , Worrall , D M & Birkinshaw , M 1999 , ' Extended X-ray emission from the BL Lac object PKS 0521-365 ' , Monthly Notices of the Royal Astronomical Society , vol. 305 , no. 2 , pp. 246-252 . https://doi.org/10.1046/j.1365-8711.1999.02353.x
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 169387
dc.identifier.otherPURE UUID: 4ae1ce02-1c6a-4a59-9c92-6fcb2b0e3ec6
dc.identifier.otherdspace: 2299/1196
dc.identifier.otherScopus: 0039110104
dc.identifier.urihttp://hdl.handle.net/2299/1196
dc.descriptionThe definitive version is available at www.blackwell-synergy.com. Copyright Blackwell Publishing DOI : 10.1046/j.1365-8711.1999.02353.x
dc.description.abstractModels that seek to unify BL Lacs and low-power radio galaxies predict that the two types of object should show similar isotropically emitted X-ray emission. Testing this is usually limited by difficulties in separating strong X-ray emission from a BL Lac nucleus and surrounding low-surface brightness emission. In this paper we report ROSAT HRI observations of the z = 0.055 BL Lac object PKS 0521−365.We are able to separate a luminous extended X-ray component from the bright nucleus. Using a new radio map, we show that it is unlikely that the extended emission is due to inverse- Compton scattering of photons from the active nucleus, and instead interpret it as thermal emission from dense, rapidly cooling gas. This is a more extreme environment than is found in typical FRI radio galaxies, and may pose a problem for unified models.en
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsOpen
dc.titleExtended X-ray emission from the BL Lac object PKS 0521-365en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted1999
rioxxterms.versionofrecordhttps://doi.org/10.1046/j.1365-8711.1999.02353.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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