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For refcode 1998ApJ...501..126H:
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Copyright by American Astronomical Society. Reproduced by permission
1998ApJ...501..126H X-Ray Signatures of Evolving Radio Galaxies SEBASTIAN HEINZ, CHRISTOPHER S. REYNOLDS, AND MITCHELL C. BEGELMAN JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309-0440 Received 1997 October 20; accepted 1998 February 12 ABSTRACT We present a simple model for an evolving radio galaxy as it expands into the hot, X-ray-emitting interstellar medium (ISM) of its host galaxy or similarly into the hot intracluster medium (ICM) of its host cluster. We solve the governing equations numerically on a grid of model parameters in order to present simple analytical tools for X-ray observations of the shocked shell that is pushed out by the cocoon and the associated cavity in the cluster emission. We apply these tools to the well-known example of Perseus A to show that its time-averaged kinetic luminosity probably exceeds 1046 ergs s^-1^, much larger than the estimated current power. We show how future observations can be used to extract useful source parameters such as the average kinetic power and the source age, and discuss detectability of sources at various stages of their lives. Subject headings: galaxies: individual (Perseus A)-galaxies: ISM -radio continuum: galaxies-X-rays: galaxies
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