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Fig. 8.

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Synthetic images of rotating reflecting surfaces with different radii R, with spin a = 0.99, inclination i = 60° and using a SANE GRMHD model. The radii correspond from left to right to 2.0, 1.5, 1.1, 1.01 and 1.001 times the radius r+ an event horizon would have had.

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