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Eccentricity Evolution in Simulated Galaxy Clusters

Stephen Floor·Adrian Melott·Christopher Miller·Greg Bryan
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Abstract

Strong cluster eccentricity evolution for $z \le 0.13$ has appeared in a variety of observational data sets. We examine the evolution of eccentricity in simulated galaxy clusters using a variety of simulation methodologies, amplitude normalizations, and background cosmologies. We do not find find such evolution for $z < 0.1$ in any of our simulation ensembles. We suggest a systematic error in the form of a redshift-dependent selection effect in cluster catalogs or missing physics in cluster simulations important enough to modify the cluster morphology.

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Stephen Floor, Adrian Melott, Christopher Miller, Greg Bryan. 2003-03-21. Eccentricity Evolution in Simulated Galaxy Clusters. https://doi.org/10.1086/375493

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