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Interactions of jets with inhomogenous cloudy media

Saxton, Curtis; Bicknell, Geoffrey; Sutherland, Ralph; Midgley, Stuart

Description

We present two-dimensional slab-jet simulations of jets in inhomogeneous media consisting of a tenuous hot medium populated with a small filling factor by warm, dense clouds. The simulations are relevant to the structure and dynamics of sources such as gigahertz peak spectrum and compact steep spectrum (CSS) radio galaxies, high-redshift radio galaxies and radio galaxies in cooling flows. The jets are disrupted to a degree depending upon the filling factor of the clouds. With a small filling...[Show more]

dc.contributor.authorSaxton, Curtis
dc.contributor.authorBicknell, Geoffrey
dc.contributor.authorSutherland, Ralph
dc.contributor.authorMidgley, Stuart
dc.date.accessioned2015-12-13T22:35:26Z
dc.identifier.issn0035-8711
dc.identifier.urihttp://hdl.handle.net/1885/76589
dc.description.abstractWe present two-dimensional slab-jet simulations of jets in inhomogeneous media consisting of a tenuous hot medium populated with a small filling factor by warm, dense clouds. The simulations are relevant to the structure and dynamics of sources such as gigahertz peak spectrum and compact steep spectrum (CSS) radio galaxies, high-redshift radio galaxies and radio galaxies in cooling flows. The jets are disrupted to a degree depending upon the filling factor of the clouds. With a small filling factor, the jet retains some forward momentum but also forms a halo or bubble around the source. At larger filling factors channels are formed in the cloud distribution through which the jet plasma flows and a hierarchical structure consisting of nested lobes and an outer enclosing bubble results. We suggest that the CSS quasar 3C 48 is an example of a low filling factor jet-interstellar medium interaction while M87 may be an example of the higher filling factor type of interaction. Jet disruption occurs primarily as a result of Kelvin-Helmholtz instabilities driven by turbulence in the radio cocoon not through direct jet-cloud interactions, although there are some examples of these. In all radio galaxies whose morphology may be the result of jet interactions with an inhomogeneous interstellar medium we expect that the dense clouds will be optically observable as a result of radiative shocks driven by the pressure of the radio cocoon. We also expect that the radio galaxies will possess faint haloes of radio-emitting material well beyond the observable jet structure.
dc.publisherBlackwell Publishing Ltd
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.subjectKeywords: Galaxies: active; Galaxies: individual: 3C 48; Galaxies: ISM; Galaxies: jets; Hydrodynamics; ISM: clouds
dc.titleInteractions of jets with inhomogenous cloudy media
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume359
dc.date.issued2005
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationMigratedxPub5402
local.type.statusPublished Version
local.contributor.affiliationSaxton, Curtis, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBicknell, Geoffrey, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSutherland, Ralph, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationMidgley, Stuart, Administrative Division, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage781
local.bibliographicCitation.lastpage200
local.identifier.doi10.1111/j.1365-2966.2005.08962.x
dc.date.updated2015-12-11T09:27:57Z
local.identifier.scopusID2-s2.0-18744362218
CollectionsANU Research Publications

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