what is space-time disturbance..can anyone explain it to me.
Where did you see that phrase? I don't recall ever having seen "space-time disturbance" but I, off the top of my head, I would think it would be something that would cause space-time not to be flat: pretty much any non-zero mass-energy.
i have found this line from a article ,"Gravitational waves are a disturbance in the curvature of space-time caused by the motions of matter and they propagate as a wave, traveling outward from a moving object or system of objects." and now i want to know how this disturbance occurs, in details.
From LIGO's site:
And Sean Caroll's notes, Chapter 6:
Separate names with a comma.