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dc.contributor.authorWykes, Sarka
dc.contributor.authorHardcastle, M.J.
dc.contributor.authorCroston, J. H.
dc.date.accessioned2016-03-16T10:14:56Z
dc.date.available2016-03-16T10:14:56Z
dc.date.issued2015-12-11
dc.identifier.citationWykes , S , Hardcastle , M J & Croston , J H 2015 , ' Centaurus A: constraints on the nature of the giant lobe filaments from XMM-Newton observations ' , Monthly Notices of the Royal Astronomical Society , vol. 454 , no. 3 , pp. 3277-3282 . https://doi.org/10.1093/mnras/stv2187
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 9755297
dc.identifier.otherPURE UUID: 5a10237b-4590-4155-a774-89095e775118
dc.identifier.otherArXiv: http://arxiv.org/abs/1508.03264v2
dc.identifier.otherScopus: 85015678587
dc.identifier.urihttp://hdl.handle.net/2299/16799
dc.description.abstractWe report on deep XMM-Newton observations of the vertex filament in the southern giant lobe of the Fanaroff-Riley class I radio galaxy Centaurus A. We find no X-ray excess from the filament region and place a 3 sigma upper limit on the 1 keV flux density of the filament of 9.6 nJy. This directly constrains the electron density and magnetic field strength in the filament. For the first time in an individual filament, we show that so long as the particle index >=2, the excess in synchrotron emissivity cannot be produced purely by excess electrons: the filament magnetic field strength must be higher than in the giant lobes as a whole, and close to or above the equipartition value for the filament. The filaments are not significantly overpressured with respect to the surrounding lobe with a pressure provided by relativistic electrons.en
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectastro-ph.GA
dc.subjectastro-ph.HE
dc.titleCentaurus A: constraints on the nature of the giant lobe filaments from XMM-Newton observationsen
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/stv2187
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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