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dc.contributor.authorShulevski, A.
dc.contributor.authorBarthel, P. D.
dc.contributor.authorMorganti, R.
dc.contributor.authorHarwood, J. J.
dc.contributor.authorBrienza, M.
dc.contributor.authorShimwell, T. W.
dc.contributor.authorRöttgering, H. J. A.
dc.contributor.authorWhite, G. J.
dc.contributor.authorCallingham, J. R.
dc.contributor.authorMooney, S.
dc.contributor.authorRafferty, D. A.
dc.date.accessioned2019-07-31T16:42:41Z
dc.date.available2019-07-31T16:42:41Z
dc.date.issued2019-07-28
dc.identifier.citationShulevski , A , Barthel , P D , Morganti , R , Harwood , J J , Brienza , M , Shimwell , T W , Röttgering , H J A , White , G J , Callingham , J R , Mooney , S & Rafferty , D A 2019 , ' LOFAR first look at the giant radio galaxy 3C 236 ' , Astronomy & Astrophysics . https://doi.org/10.1051/0004-6361/201935586
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 17145561
dc.identifier.otherPURE UUID: b11cdb10-f27d-4722-ac1b-9d77cca771c9
dc.identifier.otherArXiv: http://arxiv.org/abs/1907.09060v1
dc.identifier.otherORCID: /0000-0003-0251-6126/work/62748336
dc.identifier.urihttp://hdl.handle.net/2299/21521
dc.description10 pages, 6 figures
dc.description.abstractWe have examined the giant radio galaxy 3C~236 using LOFAR at 143 MHz down to an angular resolution of 7", in combination with observations at higher frequencies. We have used the low frequency data to derive spectral index maps with the highest resolution yet at these low frequencies. We confirm a previous detection of an inner hotspot in the north-west lobe and for the first time observe that the south-east lobe hotspot is in fact a triple hotspot, which may point to an intermittent source activity. Also, the spectral index map of 3C 236 shows that the spectral steepening at the inner region of the northern lobe is prominent at low frequencies. The outer regions of both lobes show spectral flattening, in contrast with previous high frequency studies. We derive spectral age estimates for the lobes, as well as particle densities of the IGM at various locations. We propose that the morphological differences between the lobes are driven by variations in the ambient medium density as well as the source activity history.en
dc.language.isoeng
dc.relation.ispartofAstronomy & Astrophysics
dc.rightsOpen
dc.subjectastro-ph.GA
dc.titleLOFAR first look at the giant radio galaxy 3C 236en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionSchool of Humanities
dc.contributor.institutionSchool of Creative Arts
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.relation.schoolSchool of Humanities
dc.relation.schoolSchool of Creative Arts
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2019-07-28
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1051/0004-6361/201935586
rioxxterms.licenseref.uriOther
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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