A celestial waltz: swirls and turbulence from radio galaxies in a rich group

Details A celestial waltz: swirls and turbulence from radio galaxies in a rich group A celestial waltz: swirls and turbulence from radio galaxies in a rich group

Sep 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010cxo..prop.3022w&link_type=abstract

Chandra proposal ID #12700380

Physics

Scientific paper

Though it is widely understood that radio galaxies heat the intergalactic medium (IGM), pictures of interactions have been hard to come by. High-quality mapping of the NGC 7016/7018 system has shown adjacent radio galaxies in this rich group interacting strongly with a ROSAT-detected hot atmosphere. Two remarkable 360-degree bends in the N radio jet of NGC 7016 appear to trace a collision between the jet and a vortex in the IGM. We see symmetric bends closer to the core, and buoyancy effects in the lobes of NGC 7018. These features point to likely sites of heating associated with the radio plasma and density irregularities in the IGM. We propose ACIS observations to study the dynamics and heating, so to assess the extent to which this phase of radio activity is disturbing the IGM.

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