ИСТИНА

We review mechanisms of graviton production by domain walls moving in media which are supposed to be observable in the future space experiments. The standard mechanism supposes that domain wall are intrinsically unstable and disappear partly transforming into gravitational waves. We discuss interaction of domain walls with particles in the surrounding media which produces additional graviton emission similar to bremsstrahlung in plasmas. We also discuss the oprocess of perforation of domain walls by particles interacting with them gravitationally.