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Perturbations of Spacetime around a Stationary Rotating Cosmic String
Kouji Ogawa, Hideki Ishihara, Hiroshi Kozaki +1
We consider the metric perturbations around a stationary rotating Nambu-Goto string in Minkowski spacetime. By solving the linearized Einstein equations, we study the effects of az…
Comparison of Numerical and Post-Newtonian Waveforms for Generic Precessing Black-Hole Binaries
Manuela Campanelli, Carlos O. Lousto, Hiroyuki Nakano +1
We compare waveforms and orbital dynamics from the first long-term, fully non-linear, numerical simulations of a generic black-hole binary configuration with post-Newtonian predict…
Regular second order perturbations of binary black holes: The extreme mass ratio regime
Carlos O. Lousto, Hiroyuki Nakano
In order to derive the precise gravitational waveforms for extreme mass ratio inspirals (EMRI), we develop a formulation for the second order metric perturbations produced by a poi…
Stationary Rotating Strings as Relativistic Particle Mechanics
Kouji Ogawa, Hideki Ishihara, Hiroshi Kozaki +2
Stationary rotating strings can be viewed as geodesic motions in appropriate metrics on a two-dimensional space. We obtain all solutions describing stationary rotating strings in f…
A new method to integrate (2+1)-wave equations with Dirac's delta functions as sources
Carlos O. Lousto, Hiroyuki Nakano
Unlike in the Schwarzschild black hole background, gravitational perturbations in a Kerr black hole background can not be decomposed into simple tensor harmonics in the time domain…
New method to integrate 2+1 wave equations with Dirac's delta functions as sources
Hiroyuki Nakano, Carlos O. Lousto
Gravitational perturbations in a Kerr black hole background can not be decomposed into simple tensor harmonics in the time domain. Here, we make the mode decomposition only in the…