dc.contributor.author | Hardcastle, M.J. | |
dc.contributor.author | Worrall, D.M. | |
dc.date.accessioned | 2008-02-01T11:34:58Z | |
dc.date.available | 2008-02-01T11:34:58Z | |
dc.date.issued | 2001 | |
dc.identifier.citation | Hardcastle , M J & Worrall , D M 2001 , The environments of FR II radio sources . in In: Procs of Particles and Fields in Radio Galaxies, ASP Conference Series 250 . Astronomical Society of the Pacific , pp. 358-362 . | |
dc.identifier.isbn | 1-58381-090-0 | |
dc.identifier.other | dspace: 2299/1504 | |
dc.identifier.other | ORCID: /0000-0003-4223-1117/work/30391130 | |
dc.identifier.uri | http://hdl.handle.net/2299/1504 | |
dc.description | Original paper can be found at: http://www.astrosociety.org/pubs/cs/222-252.html--Copyright Astronomical Society of the Pacific | |
dc.description.abstract | Using ROSAT observations, we estimate gas pressures in the X-ray-emitting media surrounding 63 FR II radio galaxies and quasars. We compare these pressures with the internal pressures of the radio-emitting plasma estimated by assuming minimum energy or equipartition. The majority of the radio sources (including 12/13 sources with modelled, spatially resolved X-ray emission) appear to be underpressured with respect to the external medium, suggesting that simple minimum-energy arguments underestimate the sources' internal energy densities. Some consequences of this result are discussed. | en |
dc.format.extent | 426524 | |
dc.language.iso | eng | |
dc.publisher | Astronomical Society of the Pacific | |
dc.relation.ispartof | In: Procs of Particles and Fields in Radio Galaxies, ASP Conference Series 250 | |
dc.title | The environments of FR II radio sources | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | SPECS Deans Group | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
rioxxterms.type | Other | |
herts.preservation.rarelyaccessed | true | |