Fig. 1
Dynamical (or total) gravitational acceleration of the cluster compared to the gravitational acceleration predicted by MOND with a 1:1 line overplotted for illustrative purposes. Each line is a different cluster. We use 12 clusters from Vikhlinin et al. (2006). As the clusters lie above the 1:1 line (black solid line on plot), the required gravity is more than the “MOND predicted” gravity.
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