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- Michael Holst, Lee Lindblom, Robert Owen, Harald P Pfeiffer, Mark A Scheel, Lawrence E Kidder

Techniques are developed for projecting the solutions of symmetric hyperbolic evolution systems onto the constraint submanifold (the constraint-satisfying subset of the dynamical field space). These optimal projections map a field configuration to the " nearest " configuration in the constraint submanifold, where distances between configurations are… (More)

- Lawrence E. Kidder, Scott E. Field, Francois Foucart, Erik Schnetter, Saul A. Teukolsky, Andy Bohn +8 others
- ArXiv
- 2016

We introduce a new relativistic astrophysics code, SpECTRE, that combines a discontinuous Galerkin method with a task-based parallelism model. SpECTRE's goal is to achieve more accurate solutions for challenging relativistic astrophysics problems such as core-collapse supernovae and binary neutron star mergers. The robustness of the discontinuous Galerkin… (More)

- Tanja Hinderer, Andrea Taracchini, Francois Foucart, Alessandra Buonanno, Jan Steinhoff, Matthew Duez +8 others
- Physical review letters
- 2016

Extracting the unique information on ultradense nuclear matter from the gravitational waves emitted by merging neutron-star binaries requires robust theoretical models of the signal. We develop a novel effective-one-body waveform model that includes, for the first time, dynamic (instead of only adiabatic) tides of the neutron star as well as the merger… (More)

Simulating a binary black hole coalescence by solving Einstein's equations is computationally expensive, requiring days to months of supercomputing time. Using reduced order modeling techniques, we construct an accurate surrogate model, which is evaluated in a millisecond to a second, for numerical relativity (NR) waveforms from nonspinning binary black… (More)

- Jonathan Blackman, Scott E. Field, Chad R. Galley, Béla Szilágyi, Mark A. Scheel, Manuel Tiglio +1 other
- ArXiv
- 2015

Simulating a binary black hole coalescence by solving Einstein's equations is computationally expensive, requiring days to months of supercomputing time. In this paper, we construct an accurate and fast-to-evaluate surrogate model for numerical relativity (NR) waveforms from non-spinning binary black hole coalescences with mass ratios from 1 to 10 and… (More)

- Kevin Barkett, Mark A Scheel, Roland Haas, Christian D Ott, Sebastiano Bernuzzi, Duncan A Brown +4 others
- 2015

Gravitational waves from binary neutron star (BNS) and black-hole/neutron star (BHNS) inspi-rals are primary sources for detection by the Advanced Laser Interferometer Gravitational-Wave Observatory. The tidal forces acting on the neutron stars induce changes in the phase evolution of the gravitational waveform, and these changes can be used to constrain… (More)

- Francois Foucart, Matthew D Duez, Lawrence E Kidder, Mark A Scheel, Bela Szilagyi, Saul A Teukolsky
- 2012

General relativistic simulations of black hole-neutron star mergers have currently been limited to low-mass black holes (M BH 7 M), even though population synthesis models indicate that a majority of mergers might involve more massive black holes (M BH ! 10 M). We present the first general relativistic simulations of black hole-neutron star mergers with M… (More)

- Robert Owen, Jeandrew Brink, Yanbei Chen, Jeffrey D Kaplan, Geoffrey Lovelace, Keith D Matthews +5 others
- Physical review letters
- 2011

When one splits spacetime into space plus time, the spacetime curvature (Weyl tensor) gets split into an "electric" part E(jk) that describes tidal gravity and a "magnetic" part B(jk) that describes differential dragging of inertial frames. We introduce tools for visualizing B(jk) (frame-drag vortex lines, their vorticity, and vortexes) and E(jk) (tidal… (More)

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