Periastron Advance in Spinning Black Hole Binaries: Gravitational Self-Force from Numerical Relativity

Sep 2, 2013
18 pages
Published in:
  • Phys.Rev.D 88 (2013) 12, 124027
  • Published: Dec 9, 2013
e-Print:

Citations per year

2013201620192022202502468
Abstract: (APS)
We study the general relativistic periastron advance in spinning black hole binaries on quasicircular orbits, with spins aligned or antialigned with the orbital angular momentum, using numerical-relativity simulations, the post-Newtonian approximation, and black hole perturbation theory. By imposing a symmetry by exchange of the bodies’ labels, we devise an improved version of the perturbative result and use it as the leading term of a new type of expansion in powers of the symmetric mass ratio. This allows us to measure, for the first time, the gravitational self-force effect on the periastron advance of a nonspinning particle orbiting a Kerr black hole of mass M and spin S=-0.5M2, down to separations of order 9M. Comparing the predictions of our improved perturbative expansion with the exact results from numerical simulations of equal-mass and equal-spin binaries, we find a remarkable agreement over a wide range of spins and orbital separations.
Note:
  • 18 pages, 12 figures; matches version to appear in Phys. Rev. D
  • 04.25.D-
  • 04.25.dg
  • 04.25.Nx
  • 04.30.-w
  • black hole: binary
  • black hole: mass
  • black hole: Kerr
  • gravitation: self-force
  • black hole: spin
  • numerical calculations