Gravitational Field of Non-conserving Mass Particle

Gravitational field equations are written in the form of Maxwell’s type field equations. Lorentz gauge on the gravitational scalar and vector potentials is discarded by introducing a gravitational scalar field. It makes the mass particles to be time-dependent. The non-conserving part of the mass causes to produce the gravitational scalar field, which further con-tributes to the gravitational and gravitomagnetic vector fields. This contribution makes possible to produce a repulsive gravitational field by a decaying mass particle beyond a critical distance.