Abstract
We deduce the explicit form of a phase-locked (PL) tetrad, adapted to a small spinning particle (a test gyroscope) following an arbitrary geodesic orbit in the Schwarzschild geometry of a gravitational source. We subsequently obtain the analytic expression of the gyroscopic precessional velocity Ω in a non-circular orbit, by means of the Fermi rotation coefficients related to the tetrad’s transport law. As an application, we compute the orbital shift in the spin vector, considering a spinning test particle (the gyroscope) in a slightly non-circular orbital motion in the weak gravitational field limit. We compare our results with those of other previous works.
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Sorge, F., Zilio, S. Gyroscopic precession in non-circular orbits: a phase-locked tetrad approach. Gen Relativ Gravit 39, 957–964 (2007). https://doi.org/10.1007/s10714-007-0432-4
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DOI: https://doi.org/10.1007/s10714-007-0432-4