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Local dark energy: HST evidence from the vicinity of the M81/M82 galaxy group

Karachentsev, I. D.; Kashibadze, O. G.; Makarov, D. I. +5 more

The Hubble Space Telescope observations of the nearby galaxy group M81/M82 and its vicinity indicate that the dynamics of the expansion outflow around the group is dominated by the antigravity of the dark energy background. The local density of dark energy in the area is estimated to be near the global dark energy density or perhaps exactly equal …