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- John G. Baker, Joan M. Centrella, Dae-Il Choi, Michael Koppitz, James R van Meter
- Physical review letters
- 2006

We present new ideas for evolving black holes through a computational grid without excision, which enable accurate and stable evolutions of binary black hole systems with the accurate determination of gravitational waveforms directly from the wave zone region. Rather than excising the black hole interiors, our approach follows the "puncture" treatment of… (More)

- John G. Baker, Joan M. Centrella, Dae-Il Choi, Michael Koppitz, James R. van Meter, Maurice C. Miller
- 2006

Recent developments in numerical relativity have made it possible to reliably follow the coalescence of two black holes from near the innermost stable circular orbit to final ringdown. This opens up a wide variety of exciting astrophysical applications of these simulations. Chief among these is the net kick received when two unequal mass or spinning black… (More)

We study dynamics and radiation generation in the last few orbits and merger of a binary black hole system, applying recently developed techniques for simulations of moving black holes. Our analysis of the gravitational radiation waveforms and dynamical black hole trajectories produces a consistent picture for a set of simulations with black holes beginning… (More)

John G. Baker, Manuela Campanelli, 3 Frans Pretorius, 5, 6 and Yosef Zlochower Gravitational Astrophysics Laboratory, NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Greenbelt, MD 20771, USA Center for Gravitational Wave Astronomy, Department of Physics and Astronomy, The University of Texas at Brownsville, Brownsville, Texas 78520 Center for… (More)

Optimal extraction of information from gravitational-wave observations of binary black-hole coalescences requires detailed knowledge of the waveforms. Current approaches for representing waveform information are based on spin-weighted spherical harmonic decomposition. Higher-order harmonic modes carrying a few percent of the total power output near merger… (More)

- Stanislav Babak, John G. Baker, +26 authors John M Veitch
- 2010

The Mock LISA Data Challenges are a program to demonstrate LISA dataanalysis capabilities and to encourage their development. Each round of challenges consists of one or more datasets containing simulated instrument noise and gravitational waves from sources of undisclosed parameters. Participants analyze the datasets and report best-fit solutions for the… (More)

The use of visually degraded stimuli for the investigation of perceptual processes has a long history within psychology. Typically, the intent of this approach has been to slow down the processes, making more readily observable the subprocesses, subcomponents, and time course of visual perception that often are masked by the rapidity and automaticity of… (More)

- James R. van Meter, John G. Baker, Michael Koppitz
- 2006

Recent demonstrations of unexcised black holes traversing across computational grids represent a significant advance in numerical relativity. Stable and accurate simulations of multiple orbits, and their radiated waves, result. This capability is critically undergirded by a careful choice of gauge. Here we present analytic considerations which suggest… (More)

- John G. Baker, James R van Meter, Sean T. McWilliams, Joan M. Centrella, Bernard J. Kelly
- Physical review letters
- 2007

General relativity predicts the gravitational wave signatures of coalescing binary black holes. Explicit waveform predictions for such systems, required for optimal analysis of observational data, have so far been achieved primarily using the post-Newtonian (PN) approximation. The quality of this treatment is unclear, however, for the important… (More)

- Benjamin Aylott, John G. Baker, +74 authors Yosef Zlochower
- 2009

The Numerical INJection Analysis (NINJA) project is a collaborative effort between members of the numerical relativity and gravitational-wave data analysis communities. The purpose of NINJA is to study the sensitivity of existing gravitational-wave search algorithms using numerically generated waveforms and to foster closer collaboration between the… (More)