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An Energetic AGN Outburst Powered by a Rapidly Spinning Supermassive Black Hole or an Accreting Ultramassive Black Hole
B. R. McNamara, F. Kazemzadeh, D. A. Rafferty +4
Powering the 10^62 erg nuclear outburst in the MS0735.6+7421 cluster central galaxy by accretion implies that its supermassive black hole (SMBH) grew by ~6x10^8 solar masses over t…
Jet Interactions with the Hot Halos of Clusters and Galaxies
B. R. McNamara, L. Birzan, D. A. Rafferty +3
X-ray observations of cavities and shock fronts produced by jets streaming through hot halos have significantly advanced our understanding of the energetics and dynamics of extraga…
Radio Properties of Cavities in the ICM: Imprints of AGN Activity
L. Birzan, B. R. McNamara, C. L. Carilli +2
We present new, high resolution radio images of sources associated with cD galaxies and X-ray cavity systems located in cluster cores. The cavity properties derived from archival C…
AGN Heating through Cavities and Shocks
P. E. J. Nulsen, C. Jones, W. R. Forman +5
Three comments are made on AGN heating of cooling flows. A simple physical argument is used to show that the enthalpy of a buoyant radio lobe is converted to heat in its wake. Thus…
The Starburst in the Abell 1835 Cluster Central Galaxy: A Case Study of Galaxy Formation Regulated by an Outburst from a Supermassive Black Hole
B. R. McNamara, D. A. Rafferty, L. Birzan +6
We present an optical, X-ray, and radio analysis of the starburst in the Abell 1835 cluster's central cD galaxy. The dense gas surrounding the galaxy is radiating X-rays with a lum…
The powerful outburst in Hercules A
P. E. J. Nulsen, D. C. Hambrick, B. R. McNamara +4
The radio source Hercules A resides at the center of a cooling flow cluster of galaxies at redshift z = 0.154. A Chandra X-ray image reveals a shock front in the intracluster mediu…