I discuss gravity waves in my book, “The Visitors” (on sale right now on Amazon or signed copies here >) I believe they can detect star ship signatures that may manipulate spacetime, sending out nearly imperceptible gravity waves. Unless of course you are nearby where the extreme distortion of spacetime would devastate any life depending on how close they were to the ship.
Supermassive objects such as black holes and neutron stars warp spacetime around them, and interactions between these bodies can cause the formation of gravitational waves, similar to ripples in a pond. Scientists postulated the existence of these gravity waves over 100 years ago. One cannot detect gravity waves directly, like light or radio waves. You need a special, highly sensitive instrument such as LIGO.
Now, a new study by the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) Physics Frontiers Center (PFC) has detected a low-frequency signal that might be gravitational waves.
“We can’t yet say with confidence that what we’re seeing is gravitational waves, but if it is, the “signal” makes a lot of sense given what we think we know about supermassive black holes. This was always how this was going to play out… enticing hints of a signal before we would be able to definitively claim a detection. We’re on the right track to make that definitive assessment in just a couple of years,” Dustin Madison, a postdoctoral researcher at West Virginia University (WVU).
Individual pulsars did not contain enough information to reach meaningful conclusions, but the 45 pulsars together provided a pool of data large enough to show signs of gravitational waves. However, confirmation of this finding will require more data from additional pulsars recorded over a longer period of time. The recent loss of the Arecibo Radio Telescope will require NANOGrav researchers to gather data from additional observatories around the globe.
The team was able to eliminate other possible causes of the timing variations seen by astronomers, including contributions from objects in our solar system or errors in data collection. The team is currently developing computer simulations, designed to test whether such signals come from any source other than elusive gravitational waves.