Gravitational waves rippling from black hole merger could help test general relativity

If the resulting merged black hole was 250 solar masses, that must mean that the masses of the two merging black holes (66 and 85 solar masses) must be incorrect, also, as 250 is greater than their sum.

How is this to be resolved?
They have used two different methods to measure the same thing and the two methods do not agree.
If they look at the frequency of the two separate black holes spiraling in, they get 142 solar masses.
When they look at the frequency of the "ringing" of the merged black hole they get 250 solar masses.
One or both methods is incorrect.

Latest posts