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dc.contributor.authorHardcastle, M.J.
dc.date.accessioned2013-11-14T10:31:08Z
dc.date.available2013-11-14T10:31:08Z
dc.date.issued2012-01-01
dc.identifier.citationHardcastle , M J 2012 , Large-scale components of radio galaxies in gamma rays . in AIP Conference Proceedings . vol. 1505 , American Institute of Physics , pp. 72-79 , High Energy Gamma-Ray Astronomy , Heidelberg , Germany , 9/07/12 . https://doi.org/10.1063/1.4772222
dc.identifier.citationconference
dc.identifier.isbn9780735411234
dc.identifier.otherPURE: 1911545
dc.identifier.otherPURE UUID: ae7b4ba0-5acd-4091-8c74-c57018b06259
dc.identifier.otherScopus: 84873207778
dc.identifier.urihttp://hdl.handle.net/2299/12128
dc.description.abstractThe populations of relativistic electrons and high-energy cosmic rays in the extended components of radio-loud active galaxies-kiloparsec-scale jets, hotspots and lobes-make them, in principle, interesting sources of gamma-ray photons up to the highest (TeV) energies. Here I discuss the few detections of extended gamma-ray emission with Fermi and show what constraints they put on the physical conditions in radio galaxies. Although detections of radio galaxies at TeV energy are rare, I show that the information we do have can already put interesting constraints on radio galaxy physics: the CTA should have the sensitivity and resolution to improve this situation considerably, and to resolve the expected arcmin-scale gamma-ray jet in the nearest radio galaxy, Centaurus A. Finally, I review the connection between the gamma-ray observations and the acceleration of ultra-high-energy cosmic rays, and suggest that, while radio galaxies may well be the sources of the highest-energy cosmic rays observed, they may constitute a 'disappointing' population in the sense that only very nearby sources, such as Cen A, will ever be identified as discrete cosmic-ray sources.en
dc.format.extent8
dc.language.isoeng
dc.publisherAmerican Institute of Physics
dc.relation.ispartofAIP Conference Proceedings
dc.titleLarge-scale components of radio galaxies in gamma raysen
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=84873207778&partnerID=8YFLogxK
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
rioxxterms.versionofrecordhttps://doi.org/10.1063/1.4772222
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue
herts.rights.accesstyperestrictedAccess


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