863 citations · 8.8k across the 130 of their papers we have counts for
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Substructure and Scatter in the Mass-Temperature Relations of Simulated Clusters
David A. Ventimiglia, G. Mark Voit, Megan Donahue +1
Galaxy clusters exhibit regular scaling relations among their bulk properties. These relations establish vital links between halo mass and cluster observables. Precision cosmology…
Conduction and the Star-Formation Threshold in Brightest Cluster Galaxies
G. M. Voit, K. W. Cavagnolo, M. Donahue +3
Current models of galaxy evolution suggest that feedback from active galactic nuclei is needed to explain the high-luminosity cutoff in the galaxy luminosity function. Exactly how…
An Entropy Threshold for Strong H-alpha and Radio Emission in the Cores of Galaxy Clusters
Kenneth W. Cavagnolo, Megan Donahue, G. Mark Voit +1
Our Chandra X-ray Observatory archival study of intracluster entropy in a sample of 222 galaxy clusters shows that H-alpha and radio emission from the brightest cluster galaxy are…
Chandra studies of the X-ray gas properties of galaxy groups
M. Sun, G. M. Voit, M. Donahue +3
We present a systematic analysis of 43 galaxy groups (kT_500=0.7-2.7 keV or M_500=10^13-10^14 h^-1 M_solar, 0.012<z<0.12), based on Chandra archival data. With robust background su…
Bandpass Dependence of X-ray Temperatures in Galaxy Clusters
Kenneth W. Cavagnolo, Megan Donahue, G. Mark Voit +1
We explore the band dependence of the inferred X-ray temperature of the intracluster medium (ICM) for 192 well-observed galaxy clusters selected from the Chandra Data Archive. If t…
Infrared Emission from the Nearby Cool Core Cluster Abell 2597
Megan Donahue, Andres Jordan, Stefi A. Baum +9
We observed the brightest central galaxy (BCG) in the nearby (z=0.0821) cool core galaxy cluster Abell 2597 with the IRAC and MIPS instruments on board the Spitzer Space Telescope.…
H-alpha tail, intracluster HII regions and star-formation: ESO137-001 in Abell 3627
M. Sun, M. Donahue, G. M. Voit
We present the discovery of a 40 kpc H-alpha tail and at least 29 emission-line objects downstream of a star-forming galaxy ESO 137-001 in the rich, nearby cluster A3627. The galax…
Star Formation, Radio Sources, Cooling X-ray Gas, and Galaxy Interactions in the Brightest Cluster Galaxy in 2A0335+096
Megan Donahue, Ming Sun, Christopher P. O'Dea +2
We present deep emission-line imaging taken with the SOAR Optical Imaging Camera of the brightest cluster galaxy (BCG) in the nearby (z=0.035) X-ray cluster 2A0335+096. We analyze…
The Representative XMM-Newton Cluster Structure Survey (REXCESS) of an X-ray Luminosity Selected Galaxy Cluster Sample
H. Boehringer, P. Schuecker, G. W. Pratt +31
The largest uncertainty for cosmological studies using clusters of galaxies is introduced by our limited knowledge of the statistics of galaxy cluster structure, and of the scaling…
Entropy generation in merging galaxy clusters
Michael Balogh, Ian McCarthy, Richard Bower +1
In McCarthy et al. (2007, astro-ph/0701335) we present an analysis of entropy generation during cluster mergers, using SPH simulations. This conference proceeding contribution summ…
Modelling Shock Heating in Cluster Mergers: I. Moving Beyond the Spherical Accretion Model
Ian G. McCarthy, Richard G. Bower, Michael L. Balogh +6
(Abridged) The thermal history of the intracluster medium (ICM) is complex. Heat input from cluster mergers, AGN, and galaxy winds offsets and may even halt the cooling of the ICM.…
A 70 kpc X-ray tail in the cluster A3627
M. Sun, C. Jones, W. Forman +3
We present the discovery of a 70 kpc X-ray tail behind the small late-type galaxy ESO137-001 in the nearby, hot (T=6.5 keV) merging cluster A3627, from both Chandra and XMM observa…
Entropy Profiles in the Cores of Cooling Flow Clusters of Galaxies
Megan Donahue, Donald J. Horner, Kenneth W. Cavagnolo +1
The X-ray properties of a relaxed cluster of galaxies are determined primarily by its gravitational potential well and the entropy distribution of its intracluster gas. That entrop…
An analytic investigation of the scatter in the integrated X-ray properties of galaxy groups and clusters
Michael L. Balogh, Arif Babul, G. Mark Voit +4
(Abridged) We revisit the scaling relationships between the dark matter mass and observed X-ray luminosity and temperature of galaxy clusters and groups in the local Universe. Spec…
An Observationally Motivated Framework for AGN Heating of Cluster Cores
G. Mark Voit, Megan Donahue
The cooling-flow problem is a long-standing puzzle that has received considerable recent attention, in part because the mechanism that quenches cooling flows in galaxy clusters is…
Two Clusters with Radio-quiet Cooling Cores
Megan Donahue, G. Mark Voit, Christopher P. O'Dea +2
Radio lobes inflated by active galactic nuclei at the centers of clusters are a promising candidate for halting condensation in clusters with short central cooling times because th…
Entropy amplification from energy feedback in simulated galaxy groups and clusters
S. Borgani, A. Finoguenov, S. T. Kay +4
We use hydrodynamical simulations of galaxy clusters and groups to study the effect of pre-heating on the entropy structure of the ICM. Our simulations account for non-gravitationa…
Tracing cosmic evolution with clusters of galaxies
G. Mark Voit
The most successful cosmological models to date envision structure formation as a hierarchical process in which gravity is constantly drawing lumps of matter together to form incre…
Signatures of Galaxy Formation in the Intracluster Medium
G. Mark Voit, Trevor J. Ponman
The intergalactic gas in groups and clusters of galaxies bears the indelible stamp of galaxy formation. We present a comparison between observations and simple theoretical models i…
Cool Gas in Clusters of Galaxies
Megan Donahue, G. Mark Voit
Early X-ray observations suggested that the intracluster medium cools and condenses at the centers of clusters, leading to a cooling flow of plasma in the cluster core. The increas…
On the Origin of Intracluster Entropy
G. Mark Voit, Michael L. Balogh, Richard G. Bower +2
The entropy distribution of the intracluster medium and the shape of its confining potential well completely determine the X-ray properties of a relaxed cluster of galaxies, motiva…
Modified-Entropy Models for the Intracluster Medium
G. Mark Voit, Greg L. Bryan, Michael L. Balogh +1
We present a set of cluster models that link the present-day properties of clusters to the processes that govern galaxy formation. These models treat the entropy distribution of th…
Distant Cluster Hunting I: A Comparison Between the Optical and X-ray Luminosity Functions from an Optical/X-ray Survey
Megan Donahue, Jennifer Mack, Caleb Scharf +6
We present a comparison of X-ray and optical luminosities and luminosity functions of cluster candidates from a joint optical/X-ray survey, the ROSAT Optical X-Ray Survey. Complete…
Distant Cluster Hunting II: A comparison of X-ray and optical cluster detection techniques and catalogs from the ROX Survey
Megan Donahue, Caleb Scharf, Jennifer Mack +6
We present and analyze the optical and X-ray catalogs of moderate-redshift cluster candidates from the ROSAT Optical X-ray Survey, or ROXS. The survey covers 4.8 square degrees (23…