Gravitoelectromagnetism

As a gravitomagnetic field or gravitomagnetism be in general relativity theory (ART), the shares of the gravitational field ( ie, the curvature of spacetime ) denotes that are not caused by mass or energy densities, but by mass or energy flows.

The name is based on a formal similarity of the linearized equations of ART with Maxwell's equations of electromagnetism, ie there is a formal analogy between the moving mass and moving charges - this similarity, however, exists only in the approximation of weak fields ( weak field approximation) and non-relativistic speeds. With magnetism in the sense of classical electrodynamics the gravitomagnetism has nothing to do.

Through the Lense- Thirring gravitomagnetism the postulated effect is caused, among other things, that causes a rotating mass drags space-time around them and thereby " twisted ". Josef Lense and Hans Thirring initiated this difficult to detect, because very little effect from the general theory of relativity from. Through the satellite experiment Gravity Probe B tries to prove the effect experimentally.