Morphology of flows and buoyant bubbles in the Virgo cluster

Details Morphology of flows and buoyant bubbles in the Virgo cluster Morphology of flows and buoyant bubbles in the Virgo cluster

2007-09-12

arxiv.org/abs/0709.1790v2

Astronomy and Astrophysics

Astrophysics

Accepted by MNRAS. High resolution pdf version http://www.astro.soton.ac.uk/~gbp/files/morphology.pdf

Scientific paper

10.1111/j.1365-2966.2007.12622.x

There is growing evidence that the active galactic nuclei (AGN) associated with the central elliptical galaxy in clusters of galaxies are playing an important role in the evolution of the intracluster medium (ICM) and clusters themselves. We use high resolution three-dimensional simulations to study the interaction of the cavities created by AGN outflows (bubbles) with the ambient ICM. The gravitational potential of the cluster is modelled using the observed temperature and density profiles of the Virgo cluster. We demonstrate the importance of the hydrodynamical Kutta-Zhukovsky forces associated with the vortex ring structure of the bubbles, and discuss possible effects of diffusive processes on their evolution.

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