C metric: the equatorial plane and Fermi coordinates

Details C metric: the equatorial plane and Fermi coordinates C metric: the equatorial plane and Fermi coordinates

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cqgra..22.5157b&link_type=abstract

Classical and Quantum Gravity, Volume 22, Issue 23, pp. 5157-5168 (2005).

Computer Science

2

Scientific paper

We discuss geodesic motion in the vacuum C metric using Bondi-like spherical coordinates, with special attention to the role played by the 'equatorial plane'. We show that the spatial trajectory of photons on such a hypersurface is formally the same as that of photons on the equatorial plane of the Schwarzschild spacetime, apart from an energy shift involving the spacetime acceleration parameter. Furthermore, we show that photons starting their motion from this hypersurface with vanishing component of the momentum along θ, remain confined on it, differently from the case of massive particles. This effect is shown to have a counterpart also in the massless limit of the C metric, i.e. in Minkowski spacetime. Finally, we give the explicit map between Bondi-like spherical coordinates and Fermi coordinates (up to the second order) for the world line of an observer at rest at a fixed spatial point of the equatorial plane of the C metric, a result which may be useful to estimate both the mass and the acceleration parameter of accelerated sources.

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