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dc.contributor.authorHuarte-Espinosa, M.
dc.contributor.authorKrause, M.
dc.contributor.authorAlexander, P.
dc.date.accessioned2017-04-20T16:00:48Z
dc.date.available2017-04-20T16:00:48Z
dc.date.issued2011-10-11
dc.identifier.citationHuarte-Espinosa , M , Krause , M & Alexander , P 2011 , ' 3D magnetohydrodynamic simulations of the evolution of magnetic fields in Fanaroff-Riley class II radio sources ' , Monthly Notices of the Royal Astronomical Society , vol. 417 , pp. 382-399 . https://doi.org/10.1111/j.1365-2966.2011.19271.x
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 10547192
dc.identifier.otherPURE UUID: 179a3cd3-12fe-4bc2-8818-6232b7315c47
dc.identifier.otherBibtex: urn:1f76279554a70fa6a464cea37f6edbbb
dc.identifier.otherScopus: 80053567172
dc.identifier.urihttp://hdl.handle.net/2299/17997
dc.descriptionM. Huarte-Espinoza, M. Krause, and P. Alexander, '3D magnetohydrodynamic simulations of the evolution of magnetic fields in Fanaroff–Riley class II radio sources', Monthly Notices of the Royal Astronomical Society, Vol. 417, pp. 382-399, first published online 4 October 2011. The version of record is available online at doi: 10.1111/j.1365-2966.2011.19271.x. Published by Oxford University Press on behalf of the Royal Astronomical Society. © 2011 The Author(s). Monthly Notices of the Royal Astronomical Society © 2011 RAS.
dc.description.abstractRadio observations of Fanaroff–Riley class II (FR II) sources often show correlations between the synchrotron emission and the linear-polarimetric distributions. Magnetic position vectors seem to align with the projected emission of both the radio jets and the sources’ edges. Using statistics we study such relation as well as its unknown time evolution via synthetic polarization maps of model FR II sources formed in 3D magnetohydrodynamics numerical simulations of bipolar, hypersonic and weakly magnetized jets. The magnetic field is initially random with a Kolmogorov power spectrum, everywhere. We investigate the structure and evolution of magnetic fields in the sources as a function of the power of jets and the observational viewing angle. Our synthetic polarization maps agree with observations, showing B-field vectors which are predominantly aligned with the jet axis, and show that magnetic fields inside sources are shaped by the jets’ backflow. Polarimetry is found to correlate with time, the viewing angle and the jet-to-ambient density contrast. The magnetic structure inside thin elongated sources is more uniform than inside more spherical ones. We see jets increase the magnetic energy in cocoons in proportion to the jet velocity and the cocoon width. Filaments in the synthetic emission maps suggest turbulence develops in evolved sources.en
dc.format.extent18
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsOpen
dc.subjectMHD, turbulence, methods: numerical, galaxies: active, intergalactic medium, galaxies: jets
dc.title3D magnetohydrodynamic simulations of the evolution of magnetic fields in Fanaroff-Riley class II radio sourcesen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2011-10-11
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1111/j.1365-2966.2011.19271.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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