Gravity waves are indeed the means for SETI communication as they travel at e8 times the speed of light as Tom van Flandern showed the speed was at least 2xe10 c or more! While the usual suspects heaped dogmatic howls on Tom, his friend and mine J P Vigier was a staunch supporter of his conclusion as am I. Alas both Tom and Jean Pierre are passed but their ideas and wisdom have not.
From: Eric Walker [mailto:eric.wal...@gmail.com] Sent: Thursday, January 5, 2017 8:55 PM To: vortex-l@eskimo.com Subject: Re: [Vo]:The dark side of dense hydrogen On Thu, Jan 5, 2017 at 8:24 PM, Bob Higgins <rj.bob.higg...@gmail.com <mailto:rj.bob.higg...@gmail.com> > wrote: There is a more far fetched possibility - that of communications via gravitational waves. There have been a number of papers talking about the conversion of EM waves into gravitational waves in certain types of superconductors. If that ever proves to be possible, it would open a whole new spectrum - one that could harbor SETI communications. Because gravity appears to have infinite range, assuming there are gravitons, they are expected to be massless. This means they will travel at the speed of light. From this PhysicsForums post [1], I infer that for masses under human control which would serve as the source of the gravitons, they will have very large wavelengths. Is there a way to send lots of information over a signal with a very low frequency? Gravitons aside, if the alien signal is spread across a spectrum, as you mention, I suppose it might be very difficult to detect. If the transmitted signal further involves intentionally taking the background noise and making small adjustments to it, you would probably have to be looking for this kind of pattern specifically to determine that there was a signal at all. Eric [1] https://www.physicsforums.com/threads/graviton-energy-and-frequency-wavelength.242145/#post-1780881
