Comment by DaveZale
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.
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.
Aha! Micro arc seconds!
Thank you.