Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Strong-Field Scattering of Two Black Holes: Numerics Versus Analytics


Rezzolla,  Luciano
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

(Preprint), 211KB

Supplementary Material (public)
There is no public supplementary material available

Damour, T., Guercilena, F., Hinder, I., Hopper, S., Nagar, A., & Rezzolla, L. (2014). Strong-Field Scattering of Two Black Holes: Numerics Versus Analytics. Physical Review D, 89: 081503. doi:10.1103/PhysRevD.89.081503.

Cite as: https://hdl.handle.net/11858/00-001M-0000-001A-1158-0
We probe the gravitational interaction of two black holes in the strong-field regime by computing the scattering angle $\chi$ of hyperbolic-like, close binary-black-hole encounters as a function of the impact parameter. The fully general-relativistic result from numerical relativity is compared to two analytic approximations: post-Newtonian theory and the effective-one-body formalism. As the impact parameter decreases, so that black holes pass within a few times their Schwarzschild radii, we find that the post-Newtonian prediction becomes quite inaccurate, while the effective-one-body one keeps showing a good agreement with numerical results. Because we have explored a regime which is very different from the one considered so far with binaries in quasi-circular orbits, our results open a new avenue to improve analytic representations of the general-relativistic two-body Hamiltonian.