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4 votes
3 answers
318 views

When can information escape from a black hole through a warp bubble-like spacetime?

It is well known that nothing can escape a black hole, including gravitational radiation. Many questions have been asked here about this topic, such as: Can gravitational waves escape a black hole? ...
Thorondor's user avatar
  • 4,080
1 vote
0 answers
215 views

Could LIGO detect an Alcubierre drive being used within 10 light-years of the Solar system? [closed]

Maybe this question is too speculative... But is it possible that LIGO would detect the ramp-up and ramp-down of an Alcubierre drive being used within 10 light-years of the Solar system? Also, if the ...
user1402154's user avatar
0 votes
2 answers
454 views

Gravitational waves and negative pressure

I was recently reviewing an article published by Dr. Harold White and Dr. Eric Davis (as seen here) which summarized the creation and activity of negative pressure for a supposed place-filler for the ...
user avatar
0 votes
1 answer
702 views

Do Gravitational Waves disprove superluminal Alcubierre drive?

I am not a physicist. But... does the rate at which gravitational waves travel set an upper limit to the "speed" of a ship propelled with Alcubierre drive? Or does it present a relativistic trick (...
Jichael_Mackson's user avatar
6 votes
2 answers
422 views

If there is no speed limit on space-time compression, why do gravitational waves travel at light-speed?

From what I've read about spacetime and general relativity it seems there is no limit on how quickly space-time can be compressed or expanded. Why then gravitational waves are limited to light speed? ...
drakyoko's user avatar
  • 169
1 vote
1 answer
113 views

Could an Alcubierre Drive modify a gravitational field? [closed]

I'm a high school student, so I have no clue if warping spacetime has any effect on gravitational fields, but the two seemed to be linked based on what I've watched and read. And if a warp drive is ...
Jackson's user avatar
  • 23
28 votes
3 answers
1k views

Would warp bubbles emit gravitational Cerenkov radiation in general relativity?

Inspired by the gravtiomagnetic analogy, I would expect that just as a charged tachyon would emit normal (electromagetic) Cerenkov radiation, any mass-carrying warp drive would emit gravitational ...
Retarded Potential's user avatar
10 votes
3 answers
1k views

Warp drive with gravitational waves in the nonlinear regime

gravitational waves are strictly transversal (in the linear regime at least), also their amplitudes are tiny even for cosmic scale events like supernovas or binary black holes (at least far away, ...
lurscher's user avatar
  • 14.5k