The Speed of Gravity in General Relativity and Theoretical Interpretation of the Jovian Deflection Experiment
Sergei M. Kopeikin
TL;DR
This paper discusses measurements of the quasar's radio signal passing Jupiter, providing direct evidence that the speed of gravity matches the speed of light, confirming a key aspect of general relativity.
Contribution
It offers the first direct measurement confirming that the speed of gravity equals the speed of light, supporting Einstein's principle of relativity for gravitational fields.
Findings
Confirmed the speed of gravity equals the speed of light
Provided direct observational evidence supporting general relativity
Validated the geometric sector's role in gravitational propagation
Abstract
Recent measurements of the propagation of the quasar's radio signal past Jupiter are directly sensitive to the time-dependent effect from the geometric sector of general relativity which is proportional to the speed of propagation of gravity but not the speed of light. It provides a first confirmative measurement of the fundamental speed of the Einstein general principle of relativity for gravitational field.
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