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On the equation of motion of compact binaries in Post-Newtonian approximation

Yousuke Itoh
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Abstract

A third post-Newtonian (3 PN) equation of motion for two spherical compact stars in a harmonic coordinate has been derived based on the surface integral approach and the strong field point particle limit. The strong field point particle limit enables us to incorporate a notion of a self-gravitating regular star into general relativity. The resulting 3 PN equation of motion is Lorentz invariant, unambiguous, and conserves an energy of the binary orbital motion.

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Yousuke Itoh. 2004-01-14. On the equation of motion of compact binaries in Post-Newtonian approximation. https://doi.org/10.1088/0264-9381%2F21%2F5%2F021

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