197 citations · 528 across the 6 of their papers we have counts for
6 papers
Line of Sight Bias in Dark Matter Inferences from Galaxy Cluster Mergers
David Wittman, Scott Adler, Rodrigo Stancioli
In collisions of galaxy clusters, the lack of displacement between dark matter and galaxies suggests that the dark matter scattering depth is small. This yields an upper limit on t…
First Results On Shear-Selected Clusters From the Deep Lens Survey: Optical Imaging, Spectroscopy, and X-ray Followup
D. Wittman, I. P. Dell'Antonio, J. P. Hughes +4
We present the first sample of galaxy clusters selected on the basis of their weak gravitational lensing shear. The shear induced by a cluster is a function of its mass profile and…
Weak Lensing Results from the 75 Square Degree CTIO Survey
M. Jarvis, G. Bernstein, B. Jain +4
We measure seeing-corrected ellipticities for 2 x 10^6 galaxies with magnitude R<23 in 12 widely separated fields totalling 75 deg^2 of sky. At angular scales >30\arcmin, elliptici…
LSST: a Complementary Probe of Dark Energy
J. A. Tyson, D. M. Wittman, J. F. Hennawi +1
The number of mass clusters and their distribution in redshift are very sensitive to the density of matter Omega_m and the equation of state of dark energy w. Using weak lens gravi…
Discovery of a Galaxy Cluster via Weak Lensing
D. Wittman, J. A. Tyson, V. E. Margoniner +2
We report the discovery of a cluster of galaxies via its weak gravitational lensing effect on background galaxies, the first spectroscopically confirmed cluster to be discovered th…
The Dark Matter Telescope
J. A. Tyson, David Wittman, J. R. P. Angel
Weak gravitational lensing enables direct reconstruction of dark matter maps over cosmologically significant volumes. This research is currently telescope-limited. The Dark Matter…