On a possibility of scalar gravitational wave detection from the binary pulsar PSR 1913 +16

It is shown that detecting or setting an upper limit on the scalar gravitational radiation is a good experimental test of relativistic gravity theories. The relativistic tensor-field theory of gravitation is revised and it is demonstrated that the scalar monopole gravitational radiation must be added to the usual quadrupole radiation. In the case of the binary pulsar PSR 1913+16 it is predicted the existence 0.735 % excess of the gravitational radiation due to the scalar gravitational waves.