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A unique small-scale gravitational arc in Abell 1201
Alastair C. Edge, Graham P. Smith, David J. Sand +4
We present a snapshot Hubble Space Telescope (HST) image of the galaxy cluster A1201 (z=0.169), revealing a tangential arc 2arcsec from the brightest cluster galaxy (BCG). Keck-ESI…
The Dark Matter Distribution in the Central Regions of Galaxy Clusters
D. J. Sand, T. Treu, G. P. Smith +1
Cosmological N-body simulations predict that dark matter halos should have a universal shape characterized by a steep, cuspy inner profile. Here we report on a spectroscopic study…
The Dark Matter Distribution in the Central Regions of Galaxy Clusters: Implications for CDM
David J. Sand, Tommaso Treu, Graham P. Smith +1
We have undertaken a spectroscopic survey of gravitational arcs in a carefully chosen sample of six clusters each containing a dominant brightest cluster galaxy. We use these syste…