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Chandra Cluster Cosmology Project III: Cosmological Parameter Constraints
- A. Vikhlinin, A. Kravtsov, A. Voevodkin
- Physics
- 20 February 2009
Chandra observations of large samples of galaxy clusters detected in X-rays by ROSAT provide a new, robust determination of the cluster mass functions at low and high redshifts. Statistical and…
CHANDRA STUDIES OF THE X-RAY GAS PROPERTIES OF GALAXY GROUPS
- Ming Sun, G. Voit, M. Donahue, Christine Jones, W. Forman, A. Vikhlinin
- Physics
- 5 March 2009
We present a systematic analysis of 43 nearby galaxy groups (kT 500 = 0.7-2.7 keV or M 500 = 1013-1014 h –1 M ☉, 0.012 0.15 r 500 and are consistent with a "universal temperature profile." We present…
A Direct Empirical Proof of the Existence of Dark Matter
We present new weak lensing observations of 1E0657-558 (z = 0.296), a unique cluster merger, that enable a direct detection of dark matter, independent of assumptions regarding the nature of the…
Host Galaxies, Clustering, Eddington Ratios, and Evolution of Radio, X-Ray, and Infrared-selected AGNs.
- R. Hickox, Christine Jones, Michael E. Anderson
- Physics
- 27 January 2009
We explore the connection between different classes of active galactic nuclei (AGNs) and the evolution of their host galaxies, by deriving host galaxy properties, clustering, and Eddington ratios of…
Strong and Weak Lensing United. III. Measuring the Mass Distribution of the Merging Galaxy Cluster 1ES 0657–558*
The galaxy cluster 1E0657-56 (z = 0.296) is remarkably well-suited for addressing outstanding issues in both galaxy evolution and fundamental physics. We present a reconstruction of the mass…
A Correlation between Star Formation Rate and Average Black Hole Accretion in Star-forming Galaxies (Proceeding of IAUS304: Multiwavelength AGN Surveys and Studies)
- Chien-Ting J. Chen, R. Hickox, A. Pope
- Physics
- 5 June 2013
We present the results of recent studies on the co-evolution of galaxies and the supermassive black holes (SMBHs) using Herschel far-infrared and Chandra X-ray observations in the Bo\"otes survey…
Cosmological Implications of ROSAT Observations of Groups and Clusters of Galaxies
- L. David, Christine Jones, W. Forman
- Physics
- 1 June 1995
We have combined ROSAT Position Sensitive Proportional Counter (PSPC) and optical observations of a sample of groups and clusters of galaxies to determine the fundamental parameters of these systems…
A Dynamical Analysis of Twelve Clusters of Galaxies
- T. Beers, K. Gebhardt, W. Forman, J. Huchra, Christine Jones
- Physics
- 1991
428 new redshifts for galaxies in the vicinity of twelve rich clusters are reported. The clusters observed, A85, A569, A957, A1069, A1185, A1750, A1991, A2063, A2440, A2589, A2593, and A2657, exhibit…
The Formation of Massive Cluster Galaxies
- C. Mancone, A. Gonzalez, Christine Jones
- Physics
- 8 July 2010
We present composite 3.6 and 4.5 μm luminosity functions (LFs) for cluster galaxies measured from the Spitzer Deep, Wide-Field Survey for 0.3 5σ) disagreement between the measured LF and the…
MAPPING THE DARK MATTER IN THE NGC 5044 GROUP WITH ROSAT : EVIDENCE FOR A NEARLY HOMOGENEOUS COOLING FLOW WITH A COOLING WAKE
- L. David, Christine Jones, W. Forman, S. Daines
- Physics
- 20 June 1994
The NGC 5044 group of galaxies was observed by the ROSAT Position Sensitive Proportional Counter (PSPC) for 30 ks during its reduced pointed phase (1991 July). Due to the relatively cool gas…
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