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dc.contributor.authorShimwell, T. W.
dc.contributor.authorLuckin, J.
dc.contributor.authorBrüggen, M.
dc.contributor.authorBrunetti, G.
dc.contributor.authorIntema, H. T.
dc.contributor.authorOwers, M. S.
dc.contributor.authorRöttgering, H. J. A.
dc.contributor.authorStroe, A.
dc.contributor.authorWeeren, R. J. van
dc.contributor.authorWilliams, W. L.
dc.contributor.authorCassano, R.
dc.contributor.authorGasperin, F. de
dc.contributor.authorHeald, G. H.
dc.contributor.authorHoang, D. N.
dc.contributor.authorHardcastle, M.J.
dc.contributor.authorSridhar, S. S.
dc.contributor.authorSabater, J.
dc.contributor.authorBest, P. N.
dc.contributor.authorBonafede, A.
dc.contributor.authorChyży, K. T.
dc.contributor.authorEnsslin, T. A.
dc.contributor.authorFerrari, C.
dc.contributor.authorHaverkorn, M.
dc.contributor.authorHoeft, M.
dc.contributor.authorHorellou, C.
dc.contributor.authorMcKean, J. P.
dc.contributor.authorMorabito, L. K.
dc.contributor.authorOrrù, E.
dc.contributor.authorPizzo, R.
dc.contributor.authorRetana-Montenegro, E.
dc.contributor.authorWhite, G.J.
dc.date.accessioned2016-08-05T15:51:05Z
dc.date.available2016-08-05T15:51:05Z
dc.date.issued2016-06-11
dc.identifier.citationShimwell , T W , Luckin , J , Brüggen , M , Brunetti , G , Intema , H T , Owers , M S , Röttgering , H J A , Stroe , A , Weeren , R J V , Williams , W L , Cassano , R , Gasperin , F D , Heald , G H , Hoang , D N , Hardcastle , M J , Sridhar , S S , Sabater , J , Best , P N , Bonafede , A , Chyży , K T , Ensslin , T A , Ferrari , C , Haverkorn , M , Hoeft , M , Horellou , C , McKean , J P , Morabito , L K , Orrù , E , Pizzo , R , Retana-Montenegro , E & White , G J 2016 , ' A plethora of diffuse steep spectrum radio sources in Abell 2034 revealed by LOFAR ' , Monthly Notices of the Royal Astronomical Society , vol. 459 , no. 1 , pp. 277-290 . https://doi.org/10.1093/mnras/stw661
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 10100753
dc.identifier.otherPURE UUID: b6058d01-d9b5-4a54-928b-ac75f00d6197
dc.identifier.otherArXiv: http://arxiv.org/abs/1603.06591v1
dc.identifier.otherScopus: 84970005966
dc.identifier.otherORCID: /0000-0001-7315-1596/work/30425905
dc.identifier.urihttp://hdl.handle.net/2299/17236
dc.description.abstractWith Low-Frequency Array (LOFAR) observations, we have discovered a diverse assembly of steep spectrum emission that is apparently associated with the intra cluster medium (ICM) of the merging galaxy cluster Abell 2034. Such a rich variety of complex emission associated with the ICM has been observed in few other clusters. This not only indicates that Abell 2034 is a more interesting and complex system than previously thought but it also demonstrates the importance of sensitive and high-resolution, low-frequency observations. These observations can reveal emission from relativistic particles which have been accelerated to sufficient energy to produce observable emission or have had their high energy maintained by mechanisms in the ICM. The most prominent feature in our maps is a bright bulb of emission connected to two steep spectrum filamentary structures, the longest of which extends perpendicular to the merger axis for 0.5Mpc across the south of the cluster. The origin of these objects is unclear, with no shock detected in the X-ray images and no obvious connection with cluster galaxies or AGNs. We also find that the X-ray bright region of the cluster coincides with a giant radio halo with an irregular morphology and a very steep spectrum. In addition, the cluster hosts up to three possible radio relics, which are misaligned with the cluster X-ray emission. Finally, we have identified multiple regions of emission with a very steep spectral index that seem to be associated with either tailed radio galaxies or a shock.en
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectastro-ph.HE
dc.titleA plethora of diffuse steep spectrum radio sources in Abell 2034 revealed by LOFARen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stw661
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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