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arxiv: 0708.2607 · v1 · submitted 2007-08-20 · 🌌 astro-ph

Gamma-ray emission associated with the Cluster-scale AGN Outbursts in the Hydra A system

W. Domainko (1) , J. A. Hinton (2) , E. C. D. Pope (2) ((1) Max-Planck-Institut fuer Kernphysik , Heidelberg , Germany , (2) School of Physics & Astronomy University of Leeds , UK) This is my paper
classification 🌌 astro-ph
keywords cavitieshydraobservationsoutburstparticlesapparentlyargueassociated
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Recent observations have revealed the existence of an enormously energetic > 10^61 erg AGN outburst in the Hydra A cluster of galaxies. This outburst has produced cavities in the intra-cluster medium, apparently supported by pressure from cosmic rays. Here we argue that if these cavities are filled with > GeV particles, these particles are very likely protons and nuclei. For a plausible spatial distribution of the target gas, based on observations and hydrodynamical simulations, we show that the pi^0-decay gamma-rays from these cosmic-rays may be detectable with the H.E.S.S.experiment.

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