Gravitomagnetism, clocks and geometry

Details Gravitomagnetism, clocks and geometry Gravitomagnetism, clocks and geometry

2000-12-22

arxiv.org/abs/gr-qc/0012092v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

TCI Latex, 12 pages, 2 figures. To appear in European Journal of Physics

Scientific paper

10.1088/0143-0807/22/2/301

New techniques to evaluate the clock effect using light are described. These are based on the flatness of the cylindrical surface containing the world lines of the rays constrained to move on circular trajectories about a spinning mass. The effect of the angular momentum of the source is manifested in the fact that inertial observers must be replaced by local non rotating observers. Starting from this an exact formula for circular trajectories is found. Numerical estimates for the Earth environment show that light would be a better probe than actual clocks to evidence the angular momentum influence. The advantages of light in connection with some principle experiments are shortly reviewed.

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