I looked up Gravitational Waves....but they lost me at the math section. And had been thinking about them for years now, and thinking about Gravity since September of 2007. It took me 9 months to get my head around..."Mass does not attract Mass".
Personally, I have a problem with Gravity Waves...or Gravity Radiation....But I do see the analogy with FRICTION....Two large steel balls, rolling on a trampoline, close to each other, are going to generate a wave on the fabric of the trampoline. The contact with the fabric will eventually slow them down and they will inward spiral. With Spacetime this would be infinitely less tenuous. And even two such Neutron Stars will probably continue their dance for a great many billions of years. I can see that this is much like the Laws of Thermodynamics. Where the effort is bled off as heat...that is an electromagnetic wave, and an emanating radiation.
What is my problem with Gravity Waves, and Gravity Radiation?....Gravity is an "Inward Falling" to a mass body, the body warps the spacetime "lines", toward the mass body. Waves move away from the source....gravity makes things fall towards the source....Radiation moves away from the source. Like light. Gravity makes things fall towards the source....Gravity...does not radiate. Gravity itself is not a outward motion. Gravity does not push...it SUCKS....
If the waves exist....as they are predicted, and this shows they have been detected....then this is not really GRAVITY.....it is SPACE WARPING....it is a SPACE WAVE....a WAVE IN SPACETIME.....not really gravity as SUCH,...as in the sense of Gravity of a Planet. Tossing a rock into a pond...You would not call the Ripple in a pond of water....ROCK RIPPLES.....for example...they are Water Ripples....ripples in the medium.
It is something that is happening to SPACETIME....not a planet.
"Gravity Radiation" would be a BY PRODUCT...like heat from friction. The energy is changed from kinetic to electromagnetic, and radiated off....Space....should be a shade of a touch....warmer....but that is probably too much to ask to be detected...it is minuscule at best...infinitesimal....just like detecting waves from Neutron Stars thousands of light years away. Inverse Square Law. The waves do not go far....just like a ball on the trampoline...the waves or indentation does not necessarily reach or affect the edges of the trampoline. As with the trampoline, there has to be something that the Gravity Bodies are in contact with....well....we are talking outer space....or at least some in system stellar medium...In the case of black holes, maybe that is the Accretion Disc. Detecting any appreciable addition from an unseen source is going to be difficult.
So, I propose we use a more apt term for this phenomena... Spacetime wave...and maybe Space Radiation...which would be a "dump load"....excess energy bleed off....
Gravity, in this case....my opinion....is a misnomer. Gravity points IN...not out...Space may be warped....but not really produce..."GRAVITY". You could "ride" a curve of spacetime, but not fall toward anything, for example.
If you are close to two spinning Neutron Stars...you will have a tendency to fall into their sphere of influence....regardless of any outward motion by a wave...It may also be so tenuous that you cannot really "Ride The Wave".
The Moon is close to the Earth...this SHOULD be going on, on a very small scale...but The Moon is still pulling away from us at about 1.5 inches a year.
But then this will still, either way, increase our knowledge of the Universe, and that is our Quest...
Just my observation about gravity, and opinion.