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Dark Matter and Baryons in the Most X-ray Luminous and Merging Galaxy Cluster RX J1347.5-1145
Maruša Bradač, Tim Schrabback, Thomas Erben +12
The galaxy cluster RX J1347-1145 is one of the most X-ray luminous and most massive clusters known. Its extreme mass makes it a prime target for studying issues addressing cluster…
Direct Observation of Cosmic Strings via their Strong Gravitational Lensing Effect: I. Predictions for High Resolution Imaging Surveys
Maria Alice Gasparini, Phil Marshall, Tommaso Treu +2
We use current theoretical estimates for the density of long cosmic strings to predict the number of strong gravitational lensing events in astronomical imaging surveys as a functi…
Analytic models of plausible gravitational lens potentials
Edward A. Baltz, Phil Marshall, Masamune Oguri
Gravitational lenses on galaxy scales are plausibly modelled as having ellipsoidal symmetry and a universal dark matter density profile, with a Sersic profile to describe the distr…
Strong and weak lensing united III: Measuring the mass distribution of the merging galaxy cluster 1E0657-56
Marusa Bradac, Douglas Clowe, Anthony H. Gonzalez +7
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 o…
Physical component analysis of galaxy cluster weak gravitational lensing data
Phil Marshall
We present a novel approach for reconstructing the projected mass distribution of clusters of galaxies from sparse and noisy weak gravitational lensing shear data. The reconstructi…
The SNAP Strong Lens Survey
Phil Marshall, Roger Blandford, Masao Sako
Basic considerations of lens detection and identification indicate that a wide field survey of the types planned for weak lensing and Type Ia SNe with SNAP are close to optimal for…
Very Small Array observations of the Sunyaev-Zel'dovich effect in nearby galaxy clusters
Katy Lancaster, Ricardo Genova-Santos, Nelson Falcon +10
We present VSA observations (~34GHz) on scales ~20 arcmin towards a complete, X-ray-flux-limited sample of seven clusters at redshift z<0.1. Four have significant SZ detections in…
A Wide Field Hubble Space Telescope Study of the Cluster Cl0024+1654 at z=0.4 II: The Cluster Mass Distribution
Jean-Paul Kneib, Patrick Hudelot, Richard S. Ellis +6
(abridged) We present a comprehensive lensing analysis of the rich cluster Cl0024+1654 based on panoramic sparse-sampled imaging conducted with HST. We demonstrate an ability to de…