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Recent Dynamical Relaxation of Galaxy Clusters: Evidence for a Low-Ωm Universe

Adrian L. Melott, Scott W. Chambers, Christopher J. Miller

astro-pharXiv:astro-ph/0108222

Abstract

We argue that there has been substantial evolution in the ellipticity of rich galaxy clusters between 0 < z < 0.1, and suggest that this is additional evidence for a low matter-density Universe.

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