In Figure 3 (left panel), we show a detail of Paper II: the primary black hole is at the center, and the secondary black hole is at a PA of about 35°, at the di

In Figure 3 (left panel), we show a detail of Paper II: the primary black hole is at the center, and the secondary black hole is at a PA of about 35°, at the distance of 20 μas from the primary black hole. https://iopscience.iop.org/article/10.3847/1538-4357/ae057e https://iopscience.iop.org/article/10.3847/1538-4357/ae057e