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Dark energy in six nearby galaxy flows: Synthetic phase diagrams and self-similarity

Valtonen, M. J.; Chernin, A. D.; Teerikorpi, P. +4 more

Outward flows of galaxies are observed around groups of galaxies on spatial scales of about 1 Mpc, and around galaxy clusters on scales of 10 Mpc. Using recent data from the Hubble Space Telescope (HST), we have constructed two synthetic velocity-distance phase diagrams: one for four flows on galaxy-group scales and the other for two flows on clus…