## Publication Abstracts

### O'Connell and Salmona 1967

O'Connell, R.F., and A. Salmona, 1967: Radiation of gravitational waves in Brans-Dicke general-relativity theory. Phys. Rev., **160**, 1108-1110, doi:10.1103/PhysRev.160.1108.

The rate of radiation of gravitational waves, P_{BD}=P_{T}+P_{S}, from a system of binary stars is calculated using the general-relativity theory of Brans and Dicke. It is shown that, for a circular orbit, the radiation arises purely from the tensor-field contribution P_{T}, and P_{BD} is smaller than the corresponding Einstein result PE, by a factor (2ω+3) / (2ω +4), where ω is the usual Brans-Dicke dimensionless constant (ω — 6). In the case of an elliptic orbit, there is also a contribution P_{S} from the scalar field. However, we show that the contribution of P_{S} to P_{BD} is always negligible compared to the contribution P_{T}. Thus we are able to conclude that, for all values of the eccentricity e, the Brans-Dicke theory predicts that the rate of gravitational radiation from a system of binary stars is always smaller, by a factor of the order of 15/16, than the rate predicted by Einstein's theory.

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#### BibTeX Citation

@article{oc02000x, author={O'Connell, R. F. and Salmona, A.}, title={Radiation of gravitational waves in Brans-Dicke general-relativity theory}, year={1967}, journal={Physical Review}, volume={160}, pages={1108--1110}, doi={10.1103/PhysRev.160.1108}, }

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#### RIS Citation

TY - JOUR ID - oc02000x AU - O'Connell, R. F. AU - Salmona, A. PY - 1967 TI - Radiation of gravitational waves in Brans-Dicke general-relativity theory JA - Phys. Rev. JO - Physical Review VL - 160 SP - 1108 EP - 1110 DO - 10.1103/PhysRev.160.1108 ER -

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