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Hydrostatic Chandra X-ray analysis of SPT-selected galaxy clusters - I. Evolution of profiles and core properties
J. S. Sanders, A. C. Fabian, H. R. Russell +1
We analyse Chandra X-ray Observatory observations of a set of galaxy clusters selected by the South Pole Telescope using a new publicly-available forward-modelling projection code,…
Is there a giant Kelvin-Helmholtz instability in the sloshing cold front of the Perseus cluster?
S. A. Walker, J. Hlavacek-Larrondo, M. Gendron-Marsolais +5
Deep observations of nearby galaxy clusters with Chandra have revealed concave 'bay' structures in a number of systems (Perseus, Centaurus and Abell 1795), which have similar X-ray…
Deep 230-470 MHz VLA Observations of the mini-halo in the Perseus Cluster
M. Gendron-Marsolais, J. Hlavacek-Larrondo, R. J. van Weeren +6
We present a low-frequency view of the Perseus cluster with new observations from the Karl G. Jansky Very Large Array (JVLA) at 230-470 MHz. The data reveal a multitude of new stru…
The Mass Distribution of the Unusual Merging Cluster Abell 2146 from Strong Lensing
Joseph E. Coleman, Lindsay J. King, Masamune Oguri +11
Abell 2146 consists of two galaxy clusters that have recently collided close to the plane of the sky, and it is unique in showing two large shocks on $\textit{Chandra X-ray Observa…
The Distribution of Dark and Luminous Matter in the Unique Galaxy Cluster Merger Abell 2146
Lindsay J. King, Douglas I. Clowe, Joseph E. Coleman +9
Abell 2146 ( = 0.232) consists of two galaxy clusters undergoing a major merger. The system was discovered in previous work, where two large shock fronts were detected using the…
Detecting edges in the X-ray surface brightness of galaxy clusters
J. S. Sanders, A. C. Fabian, H. R. Russell +2
The effects of many physical processes in the intracluster medium of galaxy clusters imprint themselves in X-ray surface brightness images. It is therefore important to choose opti…
Deep Chandra study of the truncated cool core of the Ophiuchus cluster
N. Werner, I. Zhuravleva, R. E. A. Canning +7
We present the results of a deep (280 ks) Chandra observation of the Ophiuchus cluster, the second-brightest galaxy cluster in the X-ray sky. The cluster hosts a truncated cool cor…
Dynamical analysis of galaxy cluster merger Abell 2146
J. A. White, R. E. A. Canning, L. J. King +12
We present a dynamical analysis of the merging galaxy cluster system Abell 2146 using spectroscopy obtained with the Gemini Multi-Object Spectrograph on the Gemini North telescope.…
Deep Chandra observation and numerical studies of the nearest cluster cold front in the sky
N. Werner, J. A. ZuHone, I. Zhuravleva +9
We present the results of a very deep (500 ks) Chandra observation, along with tailored numerical simulations, of the nearest, best resolved cluster cold front in the sky, which li…
Feedback, scatter and structure in the core of the PKS 0745-191 galaxy cluster
J. S. Sanders, A. C. Fabian, J. Hlavacek-Larrondo +5
We present Chandra X-ray Observatory observations of the core of the galaxy cluster PKS 0745-191. Its centre shows X-ray cavities caused by AGN feedback and cold fronts with an ass…
A volume-limited sample of X-ray galaxy groups and clusters - II. X-ray cavity dynamics
E. K. Panagoulia, A. C. Fabian, J. S. Sanders +1
We present the results of our study of a volume-limited sample (z <= 0.071) of 101 X-ray galaxy groups and clusters, in which we explore the X-ray cavity energetics. Out of the 101…
A giant radio halo in the cool core cluster CL1821+643
A. Bonafede, H. T. Intema, M. Brüggen +8
Giant radio halos are Mpc-size sources found in some merging galaxy clusters. The synchrotron emitting electrons are thought to be (re)accelerated by plasma turbulence induced by t…
Large scale gas sloshing out to half the virial radius in the strongest cool core REXCESS galaxy cluster, RXJ2014.8-2430
S. A. Walker, A. C. Fabian, J. S. Sanders
We search the cool core galaxy clusters in the REXCESS sample for evidence of large scale gas sloshing, and find clear evidence for sloshing in RXJ2014.8-2430, the strongest cool c…
A Ten Billion Solar Mass Outflow of Molecular Gas Launched by Radio Bubbles in the Abell 1835 Brightest Cluster Galaxy
B. R. McNamara, H. R. Russell, P. E. J. Nulsen +17
We report ALMA Early Science observations of the Abell 1835 brightest cluster galaxy (BCG) in the CO (3-2) and CO (1-0) emission lines. We detect 5E10 solar masses of molecular gas…
An XMM-Newton view of the merging activity in the Centaurus cluster
S. A. Walker, A. C. Fabian, J. S. Sanders
We report the results of XMM-Newton observations of the regions around the core of the Centaurus cluster where evidence for merging activity between the subgroup Cen 45 and the mai…
Deep Chandra Observations of Abell 2199: the Interplay between Merger-Induced Gas Motions and Nuclear Outbursts in a Cool Core Cluster
Paul E. J. Nulsen, Zhiyuan Li, William R. Forman +9
We present new Chandra observations of Abell 2199 that show evidence of gas sloshing due to a minor merger, as well as impacts of the radio source, 3C 338, hosted by the central ga…
Searching for the missing iron in the core of the Centaurus cluster
E. K. Panagoulia, A. C. Fabian, J. S. Sanders
We re-analyse a combined 198 ks Chandra observation of NGC4696, the brightest galaxy of the Centaurus cluster. We extract temperature and metallicity profiles from the data, and we…
Probing the extreme realm of AGN feedback in the massive galaxy cluster, RX J1532.9+3021
J. Hlavacek-Larrondo, S. W. Allen, G. B. Taylor +7
We present a detailed Chandra, XMM-Newton, VLA and HST analysis of one of the strongest cool core clusters known, RX J1532.9+3021 (z=0.3613). Using new, deep 90 ks Chandra observat…
Cosmological growth and feedback from supermassive black holes
P. Mocz, Katherine M. Blundell, A. C. Fabian
We develop a simple evolutionary scenario for the growth of supermassive black holes (BHs), assuming growth due to accretion only, to learn about the evolution of the BH mass funct…
X-ray exploration of the outskirts of the nearby Centaurus cluster using Suzaku and Chandra
S. A. Walker, A. C. Fabian, J. S. Sanders +2
We present Suzaku observations of the Centaurus cluster out to 0.95r200, taken along a strip to the north west. We have also used congruent Chandra observations of the outskirts to…
The Black Hole and Central Stellar Population of MCG--6-30-15
S. I. Raimundo, R. I. Davies, P. Gandhi +3
We present the first near-infrared integral field spectroscopy observations of the galaxy MCG--6-30-15. The H-band data studied in this paper cover the central 500 pc of the galaxy…
The rapid evolution of AGN feedback in brightest cluster galaxies: switching from quasar-mode to radio-mode feedback
J. Hlavacek-Larrondo, A. C. Fabian, A. C. Edge +4
We present an analysis of the 2-10 keV X-ray emission associated with the active galactic nuclei (AGNs) in brightest cluster galaxies (BCGs). Our sample consists of 32 BCGs that li…
Galaxy cluster outskirts: a universal entropy profile for relaxed clusters?
S. A. Walker, A. C. Fabian, J. S. Sanders +1
We fit a functional form for a universal ICM entropy profile to the scaled entropy profiles of a catalogue of X-ray galaxy cluster outskirts results, which are all relaxed cool cor…
Large-scale Motions in the Perseus Galaxy Cluster
A. Simionescu, N. Werner, O. Urban +6
By combining large-scale mosaics of ROSAT PSPC, XMM-Newton, and Suzaku X-ray observations, we present evidence for large-scale motions in the intracluster medium of the nearby, X-r…