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Observability of intermittent radio sources in galaxy groups and clusters

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Yates, PM, Shabala, SS ORCID: 0000-0001-5064-0493 and Krause, MGH 2018 , 'Observability of intermittent radio sources in galaxy groups and clusters' , Monthly Notices of the Royal Astronomical Society, vol. 480, no. 4 , pp. 5286-5306 , doi: 10.1093/MNRAS/STY2191.

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Abstract

We have carried out numerical hydrodynamic simulations of radio jets from active galactic nuclei using the PLUTO simulation code, with the aim of investigating the effect of different environments and intermittency of energy injection on the resulting dynamics and observable properties of the jet-inflated lobes. Initially conical jets are simulated in poor group and cluster environments. We show that the environment into which a radio jet is propagating plays a large role in the resulting morphology, dynamics, and observable properties of the radio source. The same jet collimates much later in a poor group compared to a cluster, which leads to pronounced differences in radio morphology. The intermittency of the jet also affects the observable properties of the radio source, and multiple hotspots are present for multiple outburst jets in the cluster environment. We quantify the detectability of active and quiescent phases, and find this to be strongly environment-dependent. We conclude that the dynamics and observational properties of jets depend strongly on the details of energy injection and environment.

Item Type: Article
Authors/Creators:Yates, PM and Shabala, SS and Krause, MGH
Keywords: hydrodynamics - galaxies: active - galaxies: jets - radio continuum: galaxies
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Blackwell Publishing Ltd
ISSN: 0035-8711
DOI / ID Number: 10.1093/MNRAS/STY2191
Copyright Information:

Copyright 2018 The Author. This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©:2018. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

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