Satapathy, K., Psaltis, D., Özel, F., Medeiros, L., Dougall, S. T., Chan, C.-K., et al. (2022). The Variability of the Black Hole Image in M87 at the Dynamical Timescale. \apj, 925(1): 13, pp. 13. doi:10.3847/1538-4357/ac332e.