How Merger-driven Gas Motions in Galaxy Clusters Can Turn AGN Bubbles into Radio Relics

  title={How Merger-driven Gas Motions in Galaxy Clusters Can Turn AGN Bubbles into Radio Relics},
  author={John A. Zuhone and Maxim Markevitch and Rainer Weinberger and Paul E. J. Nulsen and K Ehlert},
  journal={The Astrophysical Journal},
Radio relics in galaxy clusters are extended synchrotron sources produced by cosmic-ray electrons in the microgauss magnetic field. Many relics are found in the cluster periphery and have a cluster-centric, narrow arc-like shape, which suggests that the electrons are accelerated or reaccelerated by merger shock fronts propagating outward in the intracluster plasma. In the X-ray, some relics do exhibit such shocks at the location of the relic, but many do not. We explore the possibility that… 
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