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It is remarked that the Dicke-Brans-Jordan theory of gravitation predicts dipole gravitational radiation from certain binary systems that contain a neutron star or black hole, causing decay of the orbit. Further, it predicts that the true rate of a pulsar clock should vary with distance from a binary companion (other than a black hole). At least one of these effects would be observable in PSR 1913+16.
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Douglas M. Eardley (1975) studied this question.
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