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arxiv: gr-qc/0501001 · v2 · submitted 2005-01-01 · 🌀 gr-qc · astro-ph· hep-th· physics.optics

Comments on the paper by S. Samuel "On the speed of gravity and the Jupiter/Quasar measurement"

Sergei M. Kopeikin (University of Missouri-Columbia) This is my paper
classification 🌀 gr-qc astro-phhep-thphysics.optics
keywords speedgravitytheorymeasurementrelativisticsamueldelaygeneral
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Recent review article by S. Samuel "On the speed of gravity and the Jupiter/Quasar measurement" published in the International Journal of Modern Physics D13, 1753 (2004) provides the reader with a misleading "theory" of the relativistic time delay in general theory of relativity. Furthermore, it misquotes original publications by Kopeikin and Fomalont & Kopeikin related to the measurement of the speed of gravity by VLBI. We summarize the general relativistic principles of the Lorentz-invariant theory of propagation of light in time-dependent gravitational field, derive Lorentz-invariant expression for the relativistic time delay, and finally explain why Samuel's "theory" is conceptually incorrect and confuses the speed of gravity with the speed of light.

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