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Combining Lens Distortion and Depletion to Map the Mass Distribution of A1689
Keiichi Umetsu, Tom Broadhurst
[Abridged] We derive a projected 2D mass map of the well studied galaxy cluster A1689 based on an entropy-regularized maximum-likelihood combination of the lens magnification and d…
A Method for Weak Lensing Flexion Analysis by the HOLICs Moment Approach
Yuki Okura, Keiichi Umetsu, Toshifumi Futamase
We have developed a method for measuring higher-order weak lensing distortions of faint background galaxies, namely the weak gravitational flexion, by fully extending the Kaiser, S…
Observational Constraints on the ICM Temperature Enhancement by Cluster Mergers
Nobuhiro Okabe, Keiichi Umetsu
We present results from a combined weak lensing and X-ray analysis of the merging cluster A1914 at a redshift of based on -band imaging data with Subaru/Suprime…
Subaru Weak Lensing Study of Seven Merging Clusters: Distributions of Mass and Baryons
Nobuhiro Okabe, Keiichi Umetsu
We present and compare projected distributions of mass, galaxies, and the intracluster medium (ICM) for a sample of merging clusters of galaxies based on the joint weak-lensing, op…
Probing the Cluster Mass Distribution using Subaru Weak Lensing Data
Keiichi Umetsu, Masahiro Takada, Tom Broadhurst
We present results from a weak lensing analysis of the galaxy cluster A1689 (z=0.183) based on deep wide-field imaging data taken with Suprime-Cam on Subaru telescope. A maximum en…