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Interaction of Fanaroff-Riley class II radio jets with a randomly magnetized intracluster medium

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contributor authorHuarte-Espinosa, M.
contributor authorKrause, M.
contributor authorAlexander, P.
date accessioned2017-04-20T16:00:52Z
date available2017-04-20T16:00:52Z
date issued2011-12-11
identifier citationHuarte-Espinosa , M , Krause , M & Alexander , P 2011 , ' Interaction of Fanaroff-Riley class II radio jets with a randomly magnetized intracluster medium ' Monthly Notices of the Royal Astronomical Society , vol 418 , pp. 1621-1639 . DOI: 10.1111/j.1365-2966.2011.19545.xen
identifier issn0035-8711
identifier otherPURE: 10547284
identifier otherPURE UUID: 49ddf77f-cc15-4045-9494-f11c79a93fd1
identifier otherBibtex: urn:dcc68d8c3e8d8ac8040f79af8a295689
identifier uri
descriptionM. Huarte-Espinosa, M. Krause, and P. Alexander, 'Interaction of Fanaroff–Riley class II radio jets with a randomly magnetized intracluster medium', Monthly Notices of the Royal Astronomical Society, Vol. 418, pp. 1621-1639, first published online 6 December 2011. The version of record is available online at doi: 10.1111/j.1365-2966.2011.19545.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.en
description abstractA combination of 3D magnetohydrodynamics and synthetic numerical simulations are presented to follow the evolution of a randomly magnetized plasma that models the intracluster medium, under the isolated effects of powerful, light, hypersonic and bipolar Fanaroff–Riley class II jets. We prescribe the cluster magnetic field (CMF) as a Gaussian random field with a Kolmogorov-like energy spectrum. Both the power of the jets and the viewing angle that is used for the synthetic rotation measure (RM) observations are investigated. We find the model radio sources introduce and amplify fluctuations on the RM statistical properties which we analyse as a function of time as well as the viewing angle. The average RM and the RM standard deviation are increased by the action of the jets. Energetics, RM statistics and magnetic power spectral analysis consistently show that the effects also correlate with the jets’ power, and that the lightest, fastest jets produce the strongest changes in their environment. We see jets distort and amplify the CMFs especially near the edges of the lobes and the jets’ heads. This process leads to a flattening of the RM structure functions at scales comparable to the source size. The edge features we find are similar to ones observed in Hydra A. The results show that jet-produced RM enhancements are more apparent in quasars than in radio galaxies. Globally, jets tend to enhance the RM standard deviation which may lead to overestimations of the CMFs’ strength by about 70 per cent. This study means to serve as a pathfinder for the SKA, EVLA and LOFAR to follow the evolution of cosmic magnetic fields.en
format extent19en
language isoeng
relation ispartofMonthly Notices of the Royal Astronomical Societyen
subjectMHD, turbulence, methods: numerical, galaxies: active, intergalactic medium, galaxies: jetsen
titleInteraction of Fanaroff-Riley class II radio jets with a randomly magnetized intracluster mediumen
contributor institutionSchool of Physics, Astronomy and Mathematicsen
contributor institutionCentre for Astrophysics Researchen
identifier doi
description versionpublishersversionen
description statusPeer revieweden

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