Eccentricity Evolution in Simulated Galaxy Clusters
نویسندگان
چکیده
Strong cluster eccentricity evolution for z ≤ 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 significant 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. Subject headings: cosmology: galaxy clusters: evolution –large-scale structure of universe
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