Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974natur.252...15c&link_type=abstract
Nature, vol. 252, Nov. 1, 1974, p. 15-17.
Astronomy and Astrophysics
Astrophysics
Astrophysics, Gravitational Waves, Relativity, Astronomy, Einstein Equations, Equations Of Motion, Mercury (Planet), Schwarzschild Metric, Solar Orbits, Theoretical Physics
Scientific paper
The present work briefly discusses some questions which might have been asked of general relativity long ago and which would have contributed to our understanding of general relativity, but which were not fully developed until recently in the context of relativistic astronomy and astrophysics. For example, doubts regarding the reality of gravitational waves could have been clarified by asking the following question: Do the equations of motion of a system carried out to the requisite order include terms expressing radiation-reaction in the sense that these terms contribute to a secular decrease of a quantity, energy, which is conserved by the system in the immediately lower order approximation to the equations of motion. It is pointed out that astronomy must play the same role in general relativity as experiment does in physics.
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