Modeling multipolar gravitational-wave emission from small mass-ratio mergers

• Main Authors: Barausse, Enrico (Author), Buonanno, Alessandra (Author), Khanna, Gaurav (Author), Pan, Yi (Author), Hughes, Scott A. (Contributor), O'Sullivan, Stephen Gerard (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), MIT Kavli Institute for Astrophysics and Space Research (Contributor)
• Format: Article
• Language: English
• Published: American Physical Society, 2012-05-11T21:24:41Z.
• Subjects: Article
• Online Access: Get fulltext

Using the effective-one-body (EOB) formalism and a time-domain Teukolsky code, we generate inspiral, merger, and ringdown waveforms in the small-mass-ratio limit. We use EOB inspiral and plunge trajectories to build the Teukolsky-equation source term, and compute full coalescence waveforms for a range of black-hole spins. By comparing EOB waveforms that were recently developed for comparable-mass binary black holes to these Teukolsky waveforms, we improve the EOB model for the (2, 2), (2, 1), (3, 3), and (4, 4) modes. Our results can be used to quickly and accurately extract useful information about merger waves for binaries with spin and should be useful for improving analytic models of such binaries.
National Science Foundation (U.S.) (Grant No. PHY-0903631)
United States. National Aeronautics and Space Administration (Grant No. NNX09AI81G)
National Science Foundation (U.S.) (Grant No. PHY-0902026)
National Science Foundation (U.S.) (Grant No. CNS-0959382)
National Science Foundation (U.S.) (Grant No. PHY-1016906)
National Science Foundation (U.S.) (Grant No. PHY-1135664)
United States. Air Force Office of Scientific Research. Defense University Research Instrumentation Program (Grant No. FA9550-10-1-0354)
National Science Foundation (U.S.) (Grant No. PHY-0449884)
United States. National Aeronautics and Space Administration (Grant No. NNX08AL42G)