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Hi David;
Interesting. You've got me thinking.
Do the binaries rotate solely due to gravitational attraction or has the motion come about in different ways ? I think everyone suspects the latter (?) but is it really so ?.
For example, I wonder how closely the moons' rotational velocities track that predicted by Keplarian motion ?
It might be possible to model the system the way they model stars rotating about a galaxy core. If they obey Kepler's third law, (ie the moon velocity should be inversely proportional to the square root of the radius), then at further out distances, the velocity should fall off with the sqrt of the radius.
I might be 'off beam' here, but it would be interesting to see the variations from the theory predictions.
Its just a thought … (I guess someone's already looked into all this).
Cheers & Rgds.
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