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Reply to ``Comment on Model-dependence of Shapiro time delay and the `speed of gravity/speed of light' controversy''

S. Carlip
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Abstract

To determine whether the Shapiro time delay of light passing near a moving object depends on the ``speed of gravity'' or the ``speed of light,'' one must analyze observations in a bimetric framework in which these two speeds can be different. In a recent comment (gr-qc/0510048), Kopeikin has argued that such a computation -- described in gr-qc/0403060 -- missed a hidden dependence on the speed of gravity. By analyzing the observables in the relevant bimetric model, I show that this claim is incorrect, and that the conclusions of gr-qc/0403060 stand.

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S. Carlip. 2005-10-11. Reply to ``Comment on Model-dependence of Shapiro time delay and the `speed of gravity/speed of light' controversy''. https://doi.org/10.1088/0264-9381%2F22%2F23%2Fn02

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