Gravitational waveforms from a point particle orbiting a Schwarzschild black hole

Details Gravitational waveforms from a point particle orbiting a Schwarzschild black hole Gravitational waveforms from a point particle orbiting a Schwarzschild black hole

2003-11-05

arxiv.org/abs/gr-qc/0311017v1

Phys.Rev. D69 (2004) 044025

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

revtex4, 24 pages, 23 figures, 3 tables, submitted to PRD

Scientific paper

10.1103/PhysRevD.69.044025

We numerically solve the inhomogeneous Zerilli-Moncrief and Regge-Wheeler equations in the time domain. We obtain the gravitational waveforms produced by a point-particle of mass $\mu$ traveling around a Schwarzschild black hole of mass M on arbitrary bound and unbound orbits. Fluxes of energy and angular momentum at infinity and the event horizon are also calculated. Results for circular orbits, selected cases of eccentric orbits, and parabolic orbits are presented. The numerical results from the time-domain code indicate that, for all three types of orbital motion, black hole absorption contributes less than 1% of the total flux, so long as the orbital radius r_p(t) satisfies r_p(t)> 5M at all times.

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