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

Abstract

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.

arXiv comment14 pages, one figure, text improved, references added

References in corpus (13)

• Lorentz Covariant Theory of Light Propagation in Gravitational Fields of Arbitrary-Moving Bodies
• The Measurement of the Light Deflection from Jupiter: Experimental Results
• Gravitomagnetic Effects in the Propagation of Electromagnetic Waves in Variable Gravitational Fields of Arbitrary-Moving and Spinning Bodies
• Propagation Speed of Gravity and the Relativistic Time Delay
• Astrometric and Timing Effects of Gravitational Waves from Localized Sources
• Testing Relativistic Effect of Propagation of Gravity by Very-Long Baseline Interferometry
• Model-Dependence of Shapiro Time Delay and the "Speed of Gravity/Speed of Light" Controversy
• Light Propagation in the Gravitational Field of Moving Bodies by means of Lorentz Transformation. I. Mass monopoles moving with constant velocities
• The Speed of Gravity in General Relativity and Theoretical Interpretation of the Jovian Deflection Experiment
• The Light-cone Effect on the Shapiro Time Delay
• On the Speed of Gravity and the $v/c$ Corrections to the Shapiro Time Delay
• The Post-Newtonian Treatment of the VLBI Experiment on September 8, 2002
• On the Speed of Gravity and the Jupiter/Quasar Measurement

Cited by in corpus (5)

• The Confrontation between General Relativity and Experiment
• Constraining the range of Yukawa gravity interaction from S2 star orbits II: Bounds on graviton mass
• Aberration and the Fundamental Speed of Gravity in the Jovian Deflection Experiment
• Light propagation in 2PN approximation in the field of one moving monopole II. Boundary value problem
• On the Speed of Gravity and Relativistic v/c Corrections to the Shapiro Time Delay