TY - JOUR

T1 - Scattering of point particles by black holes

T2 - Gravitational radiation

AU - Hopper, Seth

AU - Cardoso, Vitor

PY - 2018/2/21

Y1 - 2018/2/21

N2 - Gravitational waves can teach us not only about sources and the environment where they were generated, but also about the gravitational interaction itself. Here we study the features of gravitational radiation produced during the scattering of a pointlike mass by a black hole. Our results are exact (to numerical error) at any order in a velocity expansion, and are compared against various approximations. At large impact parameter and relatively small velocities our results agree to within percent level with various post-Newtonian and weak-field results. Further, we find good agreement with scaling predictions in the weakfield/high-energy regime. Lastly, we achieve striking agreement with zero-frequency estimates.

AB - Gravitational waves can teach us not only about sources and the environment where they were generated, but also about the gravitational interaction itself. Here we study the features of gravitational radiation produced during the scattering of a pointlike mass by a black hole. Our results are exact (to numerical error) at any order in a velocity expansion, and are compared against various approximations. At large impact parameter and relatively small velocities our results agree to within percent level with various post-Newtonian and weak-field results. Further, we find good agreement with scaling predictions in the weakfield/high-energy regime. Lastly, we achieve striking agreement with zero-frequency estimates.

KW - MASSES

KW - COLLISIONS

KW - PHOTONS

KW - SYSTEMS

U2 - 10.1103/PhysRevD.97.044031

DO - 10.1103/PhysRevD.97.044031

M3 - Journal article

VL - 97

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 4

M1 - 044031

ER -