Tracing AGN Outbursts in Clusters Cores using X-ray and Low Frequency Radio Observations

Details Tracing AGN Outbursts in Clusters Cores using X-ray and Low Frequency Radio Observations Tracing AGN Outbursts in Clusters Cores using X-ray and Low Frequency Radio Observations

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.1331c&link_type=abstract

American Astronomical Society, HEAD meeting #9, #13.31; Bulletin of the American Astronomical Society, Vol. 38, p.371

Astronomy and Astrophysics

Astronomy

1

Scientific paper

X-ray observations of the thermal gas in the central regions of
cooling core clusters have revealed spectacular details of the
interactions between the central radio sources and the surrounding
thermal intracluster medium. In addition to depressions and filaments
associated with the active central radio source, there are a number of
cases of 'ghost cavities' in the thermal gas which may trace buoyant
lobes from past radio outbursts. The ghost cavities provide details on
the lifecycle of the central radio sources as well as their energy
input into the ICM. We present a detailed X-ray and multi-frequency
radio analysis of the central radio sources in several of these ghost
cavity systems. Our new low frequency radio observations allow us
to trace multiple cycles of radio outbursts and reveal evidence of
radio emission filling X-ray tunnels in both Abell 2597 and Abell 262.
Basic research in radio astronomy at the NRL is supported by the Office of Naval Research.

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