Model-independent test of spatial variations of the Newtonian gravitational constant in some extrasolar planetary systems
نویسنده
چکیده
In this paper we directly test the possibility that the Newtonian gravitational constant G may experience spatial variations over ranges ≈ 0.01− 5 AU in various extrasolar multi-planet systems by means of the third Kepler’s law. The answer is negative, within the experimental errors, for all the considered systems. A comparison with an analogous test previously performed in our Solar System is made.
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