Comment by AnimalMuppet
5 hours ago
The diagram in the article shows them 0.02 apart, with no units that I can see. Parsecs? Light years? Arc-seconds? Does anybody know?
Other commenters have proposed 0.22 light years, but if that's it, it's off from the diagram by a factor of 10...
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
Aha! Micro arc seconds!
Thank you.