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These lectures address the planar gravitational wave solutions of general relativity in empty space-time, and analyze the motion of test particles in the gravitational wave field. Next we consider related solutions of the Einstein equations for the gravitational field accompanied by long-range wave fields of scalar, spinor and vector type, corresponding to massless particles of spin s = (0,1/2,1). The motion of test masses in the combined gravitational and scalar-, spinor- or vector wave fields is discussed.

Gravitational waves and massless particle fields