Gravitational radiation from an orbiting pulsar

Details Gravitational radiation from an orbiting pulsar Gravitational radiation from an orbiting pulsar

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981gregr..13....1w&link_type=abstract

General Relativity and Gravitation, vol. 13, Jan. 1981, p. 1-6.

Astronomy and Astrophysics

Astronomy

25

Binary Stars, Gravitational Waves, Pulsars, Relativity, Stellar Gravitation, Gravitation Theory, Newton Theory, Radio Astronomy

Scientific paper

An experiment is described which establishes, with a high degree of confidence, the existence of gravitational radiation as predicted by general relativity. The experiment involves observations of binary pulsar PSR 1913 + 16, measurements of which now reveal a rate of change of orbital period within about 15% of that predicted by the general relativistic quadrupole formula. It is shown that the gravitation theories of Rosen, Ni, and Lightman-Lee predict an orbital period increase, regardless of the relative masses of the pulsar and its (assumed compact) companion. The Brans-Dicke theory predicts a much more rapid period decrease than does general relativity, unless the masses and internal structures of the two bodies are very similar. Thus, in the absence of additional ad hoc assumptions, general relativity is the only well studied theory of gravity consistent with the data.

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