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dc.contributor.authorBelsole, E.
dc.contributor.authorWorrall, D.M.
dc.contributor.authorHardcastle, M.J.
dc.contributor.editorSjouwerman, Lorant
dc.contributor.editorDyer, Kristy
dc.date.accessioned2009-04-01T08:59:30Z
dc.date.available2009-04-01T08:59:30Z
dc.date.issued2004
dc.identifier.citationBelsole , E , Worrall , D M & Hardcastle , M J 2004 , XMM-Newton Observations of Three High Redshift Radio Galaxies . in L Sjouwerman & K Dyer (eds) , X-Ray and Radio Connections . vol. 2004 , X-Ray and Radio Connections , Sante Fe , United States , 3/02/04 .
dc.identifier.citationconference
dc.identifier.otherPURE: 1800544
dc.identifier.otherPURE UUID: 0679ec06-3ef9-4939-9323-97603026fdf3
dc.identifier.otherdspace: 2299/3097
dc.identifier.otherScopus: 4043067949
dc.identifier.urihttp://hdl.handle.net/2299/3097
dc.description.abstractWe present results on the physical states of three highredshift powerful radio galaxies (3C292 atz = 0.7, 3C184 at z= 1, and 3C322 atz = 1.7). They were obtained by combining radio measurements with X-ray measurements from XMM-Newton that separate spectrally and/or spatially radio-related and hot-gas X-ray emission. Originally observed as part of a program to trace clusters of galaxies at high redshift, none of the sources is found to lie in a rich X-ray-emitting environment similar to those of some powerful radio galaxies at low redshift, although the estimated gas pressures are sufficient to confine the radio lobes. The weak gas emission is a particularly interesting result for 3C184, where a gravitational arc is seen, suggesting the presence of a very massive cluster. Here Chandra data complement the XMM-Newton measurements in spatially separating X-ray extended emission from that associated with the nucleus and rather small radio source. 3C292 is the source for which the X-ray-emitting gas is measured with the greatest accuracy, and its temperature of 2 keV and luminosity of 6.5X 1043 erg s-1are both characteristic of a poor cluster. This source allows the most accurate measurement of inverse-Compton X-ray emission associated with the radio lobes. In all structures where the magnetic-field strength can be estimated through combining measurements of radiosynchrotron and inverse-Compton X-ray emission, the field strengths are consistent with sources being in a state of minimum total energyen
dc.language.isoeng
dc.relation.ispartofX-Ray and Radio Connections
dc.titleXMM-Newton Observations of Three High Redshift Radio Galaxiesen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionScience & Technology Research Institute
dc.identifier.urlhttp://www.aoc.nrao.edu/events/xraydio/
rioxxterms.versionAM
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue


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