0.5 Mpc-scale extended X-ray emission in 4C 23.56

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dc.creatorJohnson, O.
dc.creatorAlmaini, O.
dc.creatorBest, P. N.
dc.creatorDunlop, J.
dc.date2006-08-30
dc.date.accessioned2026-07-07T10:23:31Z
dc.date.available2026-07-07T10:23:31Z
dc.descriptionWe present an XMM-Newton observation of the radio galaxy 4C 23.56 at z=2.48 which reveals extended X-ray emission coincident with the radio lobes spanning \~0.5 Mpc. These are the largest X-ray-bright lobes known at z>2. Under the assumption that these features result from inverse-Compton scattering of cosmic microwave background photons by relativistic electrons in the radio source lobes, the measured luminosity of L_0.5-8 keV=7.5x10^44 erg s^-1 implies a minimum energy stored within the lobes of ~10^59 erg. We discuss the potential of the large-scale radio/X-ray lobes to influence evolution of the host galaxy and proto-cluster environment at high redshift.
dc.description5 pages, submitted to MNRAS Letters
dc.identifierhttps://arxiv.org/abs/astro-ph/0608656
dc.identifierhttp://arxiv.org/abs/astro-ph/0608656
dc.identifierMon.Not.Roy.Astron.Soc.376:151-156,2007
dc.identifierdoi:10.1111/j.1365-2966.2006.11358.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175857
dc.subjectAstrophysics
dc.title0.5 Mpc-scale extended X-ray emission in 4C 23.56
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