Chandra Observations Of The Group Gas Around 3C 449

Details Chandra Observations Of The Group Gas Around 3C 449 Chandra Observations Of The Group Gas Around 3C 449

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21712505l&link_type=abstract

American Astronomical Society, AAS Meeting #217, #125.05; Bulletin of the American Astronomical Society, Vol. 43, 2011

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Chandra has detected shocks in the ICM around several radio galaxies in both rich environments and relatively poor environments, but we are still far from a complete understanding of role that supersonic lobe inflation plays in the overall energy budget of the hot gas of groups and clusters of galaxies. Energy input by strong shocks may be particularly important in the thermodynamic evolution of groups, however. We present preliminary results from a deep Chandra observations of 3C 449, a canonical FR I radio galaxy, to study a large scale, high Mach number shock in a nearby (z=0.017) 1.5 keV group. We find multiple surface brightness discontinuities in the gas, probably shocks, which are indicative of the supersonic inflation of the radio lobes. We also find X-ray cavities in the group gas coincident with the radio lobes. Surprisingly, there is no X-ray synchrotron emission associated with the inner jet at flux levels well below that observed in other nearby FRIs.

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