X-shaped Radio Galaxies as Probes of Radio-Mode AGN Feedback

Details X-shaped Radio Galaxies as Probes of Radio-Mode AGN Feedback X-shaped Radio Galaxies as Probes of Radio-Mode AGN Feedback

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011scgg.conf...23h&link_type=abstract

"Structure in Clusters and Groups of Galaxies in the Chandra Era, 2011 Chandra Science Workshop held July 12-14, 2011. Edited by

Physics

Scientific paper

``X"-shaped Radio Galaxies (XRGs) are radio galaxies with a second pair of lobes (``wings") in addition to the double-lobed radio morphology. The wings are long and faint (having no jet) and are symmetric about the nucleus, thereby forming an ``X" shape. The origin of XRGs is debatable (SMBH merger vs. hydrodynamic lobe deflection), but regardless they are interesting probes of radio-mode feedback because XRGs illuminate a pair of ``dead" radio lobes which interact with the surrounding intracluster medium. Since dead radio galaxies are notoriously rare, a radio/X-ray study could provide constraints on models of AGN feedback wherein dead radio galaxies play a significant role. I will present a few ``proof of concept" objects.

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