First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
Publication information:
By The EHT Collaboration al. 2019. “First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole”. ApJL, 875, Pp. 4. https://iopscience.iop.org/article/10.3847/2041-8213/ab0e85.