Chandra observation of 3C 288

Details Chandra observation of 3C 288 Chandra observation of 3C 288

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe.139l&link_type=abstract

Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo

Physics

Agn Jets

Scientific paper

We present preliminary results from a 40-ks Chandra/ACIS-S observation of the cluster gas associated with the transitional FRI/FRII radio galaxy 3C 288 at z = 0.246. We measure the total energy of the current outburst to be ˜10^{60} ergs. We find multiple surface brightness discontinuities in the gas indicative of either supersonic heating by the inflation of the radio lobe or a recent merger event. The X-ray isophotes do not appear to be centered on the central galaxy, demonstrating the presence of non-hydrostatic gas motions on scales of kpcs. Additionally, we find a significant soft (<0.5 keV) excess X-ray emission above that predicted from the 3 keV cluster gas temperature. This excess is clearly present in archival ROSAT observations of this cluster. The origin of this emission is unclear, but implies either massive cooling if thermal, or the presence of a population of ultra-relativistic electrons with a total energy far in excess of the energy of the current nuclear outburst.

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