The Interaction of Radio Sources and X-ray-Emitting Gas in Cooling Flows

Details The Interaction of Radio Sources and X-ray-Emitting Gas in Cooling Flows The Interaction of Radio Sources and X-ray-Emitting Gas in Cooling Flows

2004-02-13

arxiv.org/abs/astro-ph/0402342v1

Astronomy and Astrophysics

Astrophysics

Invited Review, "The Riddle of Cooling Flows in Galaxies and Clusters of Galaxies," Charlottesville, VA, USA. May 31 - June 4,

Scientific paper

Recent observations of the interactions between radio sources and the X-ray-emitting gas in cooling flows in the cores of clusters of galaxies are reviewed. The radio sources inflate bubbles in the X-ray gas, which then rise buoyantly outward in the clusters transporting energy to the intracluster medium (ICM). The bright rims of gas around the radio bubbles are cool, rather than hot, and do not show signs of being strongly shocked. Energy deposited into the ICM over the lifetime of a cluster through several outbursts of a radio source helps to account for at least some of the gas that is missing in cooling flows at low temperatures.

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