Open Access
Fig. A.1.

Left: image of the central 80 μas of a thick disk surrounding a Kerr black hole with spin parameter a = 0.8M, shown in logarithmic color scale. Right: same image, putting to zero all pixels corresponding to geodesics that cross more than once the equatorial plane within the coordinate sphere r = 10M.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.