The effect of mixing on metallicity gradients in the ICM

Abstract

It is generally argued that most clusters of galaxies host cooling flows in which radiative cooling in the centre causes a slow inflow. However, recent observations by Chandra and XMM conflict with the predicted cooling flow rates. It has been suggested that radio jets that are situated at the centre of clusters of galaxies can assist in reducing the deposition of cold gas. Radio jets inflate cavities of hot radio plasma that rise through the cluster atmosphere and thus stir the intra-cluster medium. In this letter it is investigated whether this scenario is consistent with the pronounced metallicity gradients that have been observed in the cores of clusters.

submitted to ApJL. 8 pages, 3 colour figures

References in corpus (6)

• Cooling Flows as a Calorimeter of AGN Mechanical Power
• Relativistic models and the jet velocity field in the radio galaxy 3C 31
• The New Emerging Model for the Structure of Cooling Cores in Clusters of Galaxies
• Interaction of Radio Lobes with the Hot Intracluster Medium: Driving Convective Outflow in Hydra A
• Evidence for a heated gas bubble inside the "cooling flow" region of MKW3s
• The Centaurus A Northern Middle Lobe as a Buoyant Bubble

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• Anisotropic Metal-enriched Outflows Driven by AGN in Clusters of Galaxies
• Metal mixing by buoyant bubbles in galaxy clusters
• Direct Evidence for Outflow of Metal-enriched Gas Along the Radio Jets of Hydra A
• Cosmological Effects of Powerful AGN Outbursts in Galaxy Clusters: Insights from an XMM-Newton Observation of MS0735+7421
• AGN feedback and gas mixing in the core of NGC 4636
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• A volume-limited sample of X-ray galaxy groups and clusters: III. Central abundance drops
• Possible AGN Shock Heating in the Cool Core Galaxy Cluster Abell 478
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• Chemical enrichment of the intracluster medium by FR II radio sources
• Mechanical heating by active galaxies