The environments of FR II radio sources

MJ Hardcastle*, DM Worrall

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

Using ROSA T 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.

Original languageEnglish
Title of host publicationPARTICLES AND FIELDS IN RADIO GALAXIES
EditorsRA Laing, KM Blundell
Place of PublicationSAN FRANCISCO
PublisherAstronomical Society of the Pacific
Pages358-362
Number of pages5
ISBN (Print)1-58381-090-0
Publication statusPublished - 2002
EventOxford Radio Galaxy Workshop - OXFORD, United Kingdom
Duration: 3 Aug 20005 Aug 2000

Publication series

NameASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES
PublisherASTRONOMICAL SOC PACIFIC
Volume250

Conference

ConferenceOxford Radio Galaxy Workshop
CountryUnited Kingdom
Period3/08/005/08/00

Keywords

  • MECHANISM
  • GALAXIES
  • GAS

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