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The Dissection of Abell 2744: A Rich Cluster Growing Through Major and Minor Mergers
Matt S. Owers, Scott W. Randall, Paul E. J. Nulsen +3
New Chandra X-ray data and extensive optical spectroscopy, obtained with AAOmega on the 3.9 m Anglo-Australian Telescope, are used to study the complex merger taking place in the g…
AGN Driven Weather and Multiphase Gas in the Core of the NGC 5044 Galaxy Group
Laurence P. David, Ewan O'Sullivan, Christine Jones +7
A deep Chandra observation of the X-ray bright group, NGC 5044, shows that the central region of this group has been strongly perturbed by repeated AGN outbursts. These recent AGN…
Chandra Observation of 3C288 - Reheating the Cool Core of a 3 keV Cluster from a Nuclear Outburst at z = 0.246
D. V. Lal, R. P. Kraft, W. R. Forman +6
We present results from a 42 ks Chandra/ACIS-S observation of the transitional FRI/FRII radio galaxy 3C288 at z = 0.246. We detect 3 keV gas extending to a radius of 0.…
Radio and Deep Chandra Observations of the Disturbed Cool Core Cluster Abell 133
S. W. Randall, T. E. Clarke, P. E. J. Nulsen +4
We present results based on new Chandra and multi-frequency radio observations of the disturbed cool core cluster Abell 133. The diffuse gas has a complex bird-like morphology, wit…
Model-independent X-ray mass determinations
P. E. J. Nulsen, S. L. Powell, A. Vikhlinin
A new method is introduced for making X-ray mass determinations of spherical clusters of galaxies. Treating the distribution of gravitating matter as piecewise constant and the clu…
Shocks and Cavities from Multiple Outbursts in the Galaxy Group NGC 5813: A Window to AGN Feedback
S. W. Randall, W. R. Forman, S. Giacintucci +10
We present results from new Chandra, GMRT, and SOAR observations of NGC 5813, the dominant central galaxy in a nearby galaxy group. The system shows three pairs of collinear caviti…