First weak lensing results from the Red-Sequence Cluster Survey

Details First weak lensing results from the Red-Sequence Cluster Survey First weak lensing results from the Red-Sequence Cluster Survey

2001-06-21

arxiv.org/abs/astro-ph/0106388v1

Astronomy and Astrophysics

Astrophysics

4 pages, to appear in the proceedings of the STScI 2001 spring symposium "Dark Universe"

Scientific paper

The Red-Sequence Cluster Survey (RCS) is a 100 square degree galaxy cluster survey designed to provide a large sample of optically selected clusters of galaxies with redshifts 0.1^{1/2}= 111+-5 km/s. In addition we have constrained for the first time the extent of dark matter halos, and find a robust upper limit for the truncation parameter s<470 h^{-1} kpc (99.7% confidence). A preliminary analysis also excludes a simple ``prediction'' of lensing according to Modified Newtonian Dynamics (MOND) at high confidence.

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