Journal Article A note on gravitational wave extraction from binary simulations

Nakano, Hiroyuki

32 ( 17 ) 2015-08-19 , IOP Publishing
In previous works, we developed a perturbative extrapolation formula to obtain gravitational waves at infinity from binary black hole simulations, based on the Regge–Wheeler–Zerilli formalism. In practice, this formula was basically derived in a background flat spacetime. We derive here an estimation of errors and an improved extrapolation formula by using the Teukolsky perturbative equation for a background Kerr spacetime. The improved formula requires knowledge about a mass and spin of the background spacetime.

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