Scattering of Long-Wavelength Gravitational Waves

Abstract

We consider the scattering of a low-frequency gravitational wave by a massive compact body in vacuum. We apply partial-wave methods to compute amplitudes for the helicity-conserving and helicity-reversing contributions to the cross section, accurate to first order in $M\omega$. Contrary to previous claims, we find that the partial-wave cross section agrees with the cross section derived via perturbation-theory methods.

7 pages, no figs. Minor changes made to match published version

References in corpus (2)

• Gravitational radiation from a particle in circular orbit around a black hole. V. Black-hole absorption and tail corrections
• Perturbation Theory Calculation of the Black Hole Elastic Scattering Cross Section

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