The environments of FRII radio sources

Abstract

Using ROSAT observations, we estimate gas pressures in the X-ray-emitting medium surrounding 63 FRII radio galaxies and quasars. We compare these pressures with the internal pressures of the radio-emitting plasma estimated by assuming minimum energy or equipartition. In the majority of cases (including 12/13 sources with modelled, spatially resolved X-ray emission) radio sources appear to be underpressured with respect to the external medium, suggesting that simple minimum-energy arguments underestimate the sources' internal energy density. We discuss possible departures from the minimum energy condition and the consequences of our result for models of the dynamics of radio galaxies, in particular self-similar models (Kaiser & Alexander 1997).

11 pages, 4 figures, accepted for MNRAS

References in corpus (6)

• Chandra X-Ray Detection of the Radio Hotspots of 3C295
• X-ray-emitting Atmospheres of B2 Radio Galaxies
• X-ray observations of low-power radio galaxies from the B2 catalogue
• The hyperluminous infrared quasar 3C 318 and its implications for interpreting sub-mm detections of high-redshift radio galaxies
• Sub-Arcsecond Imaging of 3C123:108-GHz Continuum Observations of the Radio Hotspots
• Detection of Iron Emission Line from the Galaxy Cluster Including the Radio Galaxy 3C220.1 at z=0.62

Cited by in corpus (52)

• An X-ray study of magnetic field strengths and particle content in FRII radio sources
• Radio galaxies and feedback from AGN jets
• X-ray Emission Properties of Large Scale Jets, Hotspots and Lobes in Active Galactic Nuclei
• Radio Bubbles in Clusters
• Numerical modelling of the lobes of radio galaxies in cluster environments
• Magnetic field strengths in the hotspots and lobes of three powerful FRII radio sources
• A simulation-based analytic model of radio galaxies
• X-ray emission from the nuclei, lobes and hot-gas environments of two FR-II radio galaxies
• J1420--0545: The radio galaxy larger than 3C236
• Mass entrainment and turbulence-driven acceleration of ultra-high energy cosmic rays in Centaurus A
• Numerical modelling of the lobes of radio galaxies in cluster environments - III. Powerful relativistic and nonrelativistic jets
• XMM-Newton observations of the hot-gas atmospheres of 3C 66B and 3C 449
• Mutual distance dependence drives the observed jet power - radio luminosity scaling relations in radio galaxies
• A Chandra and XMM-Newton study of the wide-angle tail radio galaxy 3C465
• A Chandra detection of the radio hotspot of 3C123
• An Independent Derivation of the Oxford Jet Kinetic Luminosity Formula
• FR II radio galaxies at low frequencies I: morphology, magnetic field strength and energetics
• High redshift FRII radio galaxies: X-ray properties of the cores
• Interaction between the intergalactic medium and central radio source in the NGC 4261 group of galaxies
• On the interaction of FR-II radio sources with the intracluster medium
• The estimate of kinetic powers of jets in FRII radio galaxies: existence of invisible components?
• Jets from Sub-Parsec to Kiloparsec Scales: A Physical Connection
• A Radio through X-ray Study of the Hot Spots, Active Nucleus, and Environment of the Nearby FR II Radio Galaxy 3C 33
• Giant Radio Galaxies: I. Intergalactic Barometers
• The interaction between radio lobes and hot gas in the nearby radio galaxies 3C285 and 3C442A
• Soft Gamma-ray selected radio galaxies: favouring giant size discovery
• Chandra measurements of 3C 220.1's X-ray core and cluster
• Giant Lobes of Centaurus A Radio Galaxy Observed with the Suzaku X-ray Satellite
• Tracing Multiple Generations of AGN Feedback in the Core of Abell 262
• Constraints on the Cluster Environments and Hot Spot Magnetic Field Strengths of the Radio Sources 3C254 and 3C280
• Deciphering the large-scale environment of radio galaxies in the local Universe: where do they born, grow and die?
• The dynamics of the giant radio galaxy 3C 457
• XMM-Newton observations of three high redshift radio galaxies
• New insights into the evolution of the FR I radio galaxy 3C 270 (NGC 4261) from VLA and GMRT radio observations
• The relationship between the X-ray and radio components in the Compact Steep Spectrum Quasar 3C 48
• Heating of the Hot Intergalactic Medium by Powerful Radio Galaxies and Associated High Energy Gamma-Ray Emission
• The Hot Gas Environment of the Radio Galaxy 3C 388: Quenching the Accumulation of Cool Gas in a Cluster Core by a Nuclear Outburst
• Evidence for a significant mixture of electron/positron pairs in FRII jets constrained by cocoon dynamics
• Relativistic spine jets from Schwarzschild black holes: "Application to AGN radioloud sources"
• Low-frequency constraints on the spectra of the lobes of the microquasar GRS 1758-258
• Interactions of Radio Galaxies and the Intra-Cluster Medium in Abell 160 and Abell 2462
• The dynamics and environmental impact of 3C452
• Searching for the inverse-Compton emission from bright cluster-centre radio galaxies
• The morphological classification of distant radio galaxies explored with three-dimensional simulations
• 3C 17: The BCG of a galaxy cluster at z=0.22
• The X-ray emission of 3C 346 and its environment
• LOFAR Measures the Hotspot Advance Speed of the High-Redshift Blazar S5 0836+710
• The Gaseous Environments of Radio Galaxies
• Thermal and Non-thermal Plasmas in the Galaxy Cluster 3C 129
• Superdisks in Radio Galaxies: Jet-Wind Interactions
• Monte-Carlo Modeling of Non-Gravitational Heating Processes in Galaxy Clusters
• Search for the Sunyaev-Zel'dovich Effect in a Giant Radio Galaxy B1358+305