Computing the merger of black-hole binaries: The IBBH problem
نویسندگان
چکیده
Gravitational radiation arising from the inspiral and merger of binary black holes ~BBH’s! is a promising candidate for detection by kilometer-scale interferometric gravitational wave observatories. This Rapid Communication discusses a serious obstacle to searches for such radiation and to the interpretation of any observed waves: the inability of current computational techniques to evolve a BBH through its last ;10 orbits of inspiral ~;100 radians of gravitational-wave phase!. A new set of numerical-relativity techniques is proposed for solving this ‘‘intermediate binary black hole’’ ~IBBH! problem: ~i! numerical evolutions performed in coordinates co-rotating with the BBH, in which the metric coefficients evolve on the long timescale of inspiral, and ~ii! techniques for mathematically freezing out gravitational degrees of freedom that are not excited by the waves. @S0556-2821~98!50218-4#
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