00447nas a2200181   4500000000100000000000100001008004100002100001600043700001500059700001300074700001500087700001100102700001800113700001600131245010300147300000700250490000800257       2018                            d1 aL. Medeiros1 aC.-K. Chan1 aF. Özel1 aD. Psaltis1 aJ. Kim1 aD. P. Marrone1 aA. Sadowski00aGRMHD Simulations of Visibility Amplitude Variability for Event Horizon Telescope Images of Sgr A*  a130 v856