The thing that always bothered me about LIGO was this: if large gravity waves can bend ("warp") space-time, then they would also bend ("warp") the laser light. In other words, the interferometer would not detect any change in the lengths of the arms of the LIGO because all would compress and expand together -- including the laser light wave speed, propagation, period, and wave length.
This idea, of course would only appear to be contrary to "light speed" being constant in all "observable" spatial reference frames. But the Lense-Thirring effect, by its very nature, suggests that there are reference frames which are not "observable" by us -- i.e. extra dimensional or non-locality. If large gravity waves do warp time-space, then the "warpage" would appear entirely invisible to someone within the warped time-space.
It's been a pretty big project as far as I can tell -- with others in Europe and one in Australia -- all trying to measure time-space distortion. Yet, it is not clear to me exactly what any have measured to date. They may actually have a quantum entanglement problem, i.e. if time-space is actually distorted by these so-called waves (the size of the LIGO device) -- would not the laser light waves (amplitude, frequency, propagation) also be affected so that the changes could not even be measured?
The funny thing about "measurements" is that they are always confined to some form of messenger substratum (light, sound, gamma rays, etc.) which is in turn confined to our reality (things capable of being detected). It's like quantum entanglement. We know its there, but can't really measure it. e.g. take a coin and using a finely calibrated saw, cut right down the middle, separating heads and tails. Send the heads side off in the mail -- and no matter where it goes, the one you keep will stay tails and the one you sent can only be heads. They are entangled forever, no matter how far apart you send them.
If I were a scientist running a super large laser interferometer, like the ones at the Louisiana and Washington LIGO, I would try sending a "dispersion wave" rather than a non-dispersed laser light wave. Princeton physicists, at the NEC laboratories in the year 2000, had already demonstrated that dispersion waves (group velocities) are known to "travel" faster than light. LIGO might be more readily capable of detecting these time-space distortions if testing for FTL distortions in the dispersed group velocity.
The above graphic shows how a group wave propagation (red dot speed) can differ from the carrier wave propagation (green dot speed). The above group wave was graphically created by inputing multiple dispersion waves where the frequencies and amplitudes added together to create the distorted group velocity. That is how the Princeton physicists demonstrated faster than light propagation -- and how I would believe the LIGO experimenters could better detect time-space distortions using FTL wave measurements.
Should I tell them? Or do you think they already know?