[flagged]
What do you mean? What would be the source of the regular wave-like signal, and why only systems with life have one?
Do you mean that actual hearts beating create gravitational waves?
The source of the signal would be a solar system that contains planets in a stable enough orbit to harbor life.
> and why only systems with life have one?
Solar systems that harbor life (our own, for example) are not the only stable solar systems. A stable solar system is however required to be the genesis grounds of life as we understand it, otherwise the building blocks of such potential life would be swallowed in the chaos and heat.
I'm not a physicist nor astronomer. I wouldn't expect any gravity waves as I'd expect the star system to have a center of mass that stays in roughly the same space.
All gravitational events lead to a wave. A system emitting stable waves creates a "pattern".
Who was the original author?