Gießen 2024 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 18: Poster

GR 18.6: Poster

Thursday, March 14, 2024, 17:15–18:45, HBR 14: Foyer

Time transfer in stationary and general frames — •Bennet Grützner — ZARM, Bremen

Time transfer, a form of synchronization, is a necessary tool for many experiments and observations. In Special Relativity Einstein synchronization is widely accepted as the standard method of time transfer. It works just as well in static frames in General Relativity, like non-rotating frames in the Schwarzschild metric. However, in stationary or general frames, Einstein synchronization is not transitive due to effects such as the Sagnac effect.

We discuss different methods of time transfer, with particular emphasis on globally transitive methods. The concept of hyperspheres of simultaneity is introduced, and applications to time transfer on Earth and in space are discussed.

Keywords: Geodesy; FOR5456; FOR5456 Clock Metrology