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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:	Refereed Article
Keywords:	hydrodynamics - galaxies: active - galaxies: jets - radio continuum: galaxies
Research Division:	Physical Sciences
Research Group:	Astronomical sciences
Research Field:	Cosmology and extragalactic astronomy
Objective Division:	Expanding Knowledge
Objective Group:	Expanding knowledge
Objective Field:	Expanding knowledge in the physical sciences
UTAS Author:	Yates, PM (Mr Patrick Yates-Jones)
UTAS Author:	Shabala, SS (Associate Professor Stas Shabala)
UTAS Author:	Krause, MGH (Dr Martin Krause)
ID Code:	130389
Year Published:	2018
Funding Support:	Australian Research Council (DE130101399)
Web of Science® Times Cited:	10
Deposited By:	Mathematics and Physics
Deposited On:	2019-01-23
Last Modified:	2019-03-13
Downloads:	49 View Download Statistics