Creation of X-ray Holes with Cool Rims in Cooling Flows

Abstract

The density irregularities and holes visible in many Chandra X-ray images of cluster and galactic cooling flows can be produced by symmetrically heated gas near the central galactic black hole. As the heated gas rises away from the galactic center, a relatively small number of large plumes and bubbles are formed in qualitative agreement with the observed features. The expanding centrally heated gas drives a shock into the surrounding gas, displacing it radially. Both computational and analytic results show that the ambient gas near the bubble is cooled by expansion, accounting for the cool rims commonly observed around X-ray holes in cooling flows.

4 pages (emulateapj5) with 3 figures; accepted by The Astrophysical Journal Letters

References in corpus (5)

• The hydrodynamics of dead radio galaxies
• Chandra ACIS-S Observations of Abell 4059: Signs of Dramatic Interaction Between a Radio Galaxy and a Galaxy Cluster
• Heated Cooling Flows
• The peculiar small-scale X-ray morphology of NGC 5846 observed with Chandra
• Hot Bubbles in Cooling Flow Clusters

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• Partitioning the Outburst Energy of a Low Eddington Accretion Rate AGN at the Center of an Elliptical Galaxy: the Recent 12 Myr History of the Supermassive Black Hole in M87
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• Creation of X-ray cavities in galaxy clusters with cosmic rays
• Mechanical heating by active galaxies
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• A Chandra and XMM View of the Mass & Metals in Galaxy Groups and Clusters
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