Alien spaceship wormhole gravitational waves detector

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Dinarchik
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Recently viewed video about wormholes that required negative energy to create it. Suppose hypothetical aliens have discovered this technology. Spaceship enters in first point and exit at second. To prevent spaceship destruction they might have technology to smooth gravitational waves on exit side, but first point hypothetically should have them. Can we use LIGO to detect gravitational waves left from closing wormhole less then 1 mile in diameter? ;))
 
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NASA working currently on wrap drive. When starship moves this drive also should create gravitational waves
 
You'd have to find a solution to Einstein's field equations describing your opening and closing wormhole, then derive whether it emits gravitational radiation (by no means something you can just blithely assume). Ditto the warp drive. Then you have to determine whether the amplitude and frequency of any emissions falls in the range LIGO could detect.

Good luck! You're going to need a pretty big computer.
 
Dinarchik said:
Can we use LIGO to detect gravitational waves left from closing wormhole less then 1 mile in diameter?
It depends on the energy of the wormholes, @Dinarchik. I don't know about the current sensitivity, but in the early days of LIGO coalescing binary black hole systems with individual masses of 30  M⊙ could be detected out to 1.3 Gpc. I'd expect LIGO could detect your small wormholes if they were much closer in, but presumably there would be a burst of EM radiation that would be also easily detected.

How far away are you suggesting these alien spaceships would be popping in and out of warp?
 
In this article https://arxiv.org/pdf/0809.0907v1.pdf Author analyze energy density of wormhole equal density of string. Black holes don't have such density in event horizon - only if it minimal size black hole made entirely from strings. Maybe real black hole interior core going to have this minimal size.
I did analyze math and looks like it not depends on Energy at all, but on area of entrance surface divided by length of wormhole. Means the more length device have to create wormhole the less energy it requires. Confusing.
But signature of gravitational wave of closing wormhole cannot be misinterpreted: it like black hole momentarily appears on this place. If regular gravitational waves should be smooth waves this one going to have sharp corners.