Buoyant radio plasma in clusters of galaxies
Buoyant radio plasma in clusters of galaxies
Radio galaxies are known to inflate lobes of hot relativistic plasmas into the intergalactic medium. Here we present hydrodynamical and magnetohydrodynamical simulations of these hot plasma bubbles in FR II objects. We focus on the later stages of their evolution after the jet has died down and after the bow shock that surrounded the lobes at earlier stages has vanished. We investigate the evolution of the plasma bubbles as they become subject to Rayleigh–Taylor instabilities. From our simulations we calculate the radio and X-ray emissivities of the bubbles and discuss their appearance in observations. Finally, we investigate the influence of large-scale magnetic fields on the evolution of the bubbles. The issues of re-acceleration and diffusion of relativistic particles are briefly discussed.
hydrodynamics, MHD, galaxies: jets, radio continuum: galaxies
676-684
Brüggen, M.
22978d12-1091-42aa-a172-6cda407ba55b
Kaiser, C.R.
a486973d-799c-401e-aa99-47dddd3972f7
2001
Brüggen, M.
22978d12-1091-42aa-a172-6cda407ba55b
Kaiser, C.R.
a486973d-799c-401e-aa99-47dddd3972f7
Brüggen, M. and Kaiser, C.R.
(2001)
Buoyant radio plasma in clusters of galaxies.
Monthly Notices of the Royal Astronomical Society, 325 (2), .
Abstract
Radio galaxies are known to inflate lobes of hot relativistic plasmas into the intergalactic medium. Here we present hydrodynamical and magnetohydrodynamical simulations of these hot plasma bubbles in FR II objects. We focus on the later stages of their evolution after the jet has died down and after the bow shock that surrounded the lobes at earlier stages has vanished. We investigate the evolution of the plasma bubbles as they become subject to Rayleigh–Taylor instabilities. From our simulations we calculate the radio and X-ray emissivities of the bubbles and discuss their appearance in observations. Finally, we investigate the influence of large-scale magnetic fields on the evolution of the bubbles. The issues of re-acceleration and diffusion of relativistic particles are briefly discussed.
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Published date: 2001
Keywords:
hydrodynamics, MHD, galaxies: jets, radio continuum: galaxies
Identifiers
Local EPrints ID: 14776
URI: http://eprints.soton.ac.uk/id/eprint/14776
ISSN: 0035-8711
PURE UUID: 75e0763b-4afa-41c5-8183-ed2ea92c5b7d
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Date deposited: 28 Feb 2005
Last modified: 08 Jan 2022 06:45
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Contributors
Author:
M. Brüggen
Author:
C.R. Kaiser
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