Diagnostics of the outburst in Hercules A

Details Diagnostics of the outburst in Hercules A Diagnostics of the outburst in Hercules A

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop...68n&link_type=abstract

XMM-Newton Proposal ID #04017301

Physics

Groups Of Galaxies, Clusters Of Galaxies, Supercluster, Hercules A, Xmm-Newton Proposal 04017301

Scientific paper

The intracluster medium (ICM) of the Hercules A Cluster shows the imprint of a very energetic outburst from a central active galactic nucleus. The radio lobes of Hercules A appear to be driving a shock front into the ICM. A deep XMM-Newton observation would enable us to confirm that this is a shock front and to better quantify its properties by making accurate measurements of the temperature distribution. By examining the ICM on large scales, we can look for the individual and cumulative effects of earlier outbursts. The unusual X-ray cavities in Hercules A may have been created by shock heating of the ICM and we will attempt to detect the hot gas that should fill them if this is so. The data will also be used to measure the X-ray spectrum of the eastern radio jet.

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