Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2003-02-18
Phys.Rev. D67 (2003) 084027
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
accepted for publication in the Physical Review
Scientific paper
10.1103/PhysRevD.67.084027
A charge-free, point particle of infinitesimal mass orbiting a Kerr black hole is known to move along a geodesic. When the particle has a finite mass or charge, it emits radiation which carries away orbital energy and angular momentum, and the orbit deviates from a geodesic. In this paper we assume that the deviation is small and show that the half-advanced minus half-retarded field surprisingly provides the correct radiation reaction force, in a time-averaged sense, and determines the orbit of the particle.
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