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16 papers · 1 filter
Dynamical Excision Boundaries in Spectral Evolutions of Binary Black Hole Spacetimes
Daniel A. Hemberger, Mark A. Scheel, Lawrence E. Kidder +4
Simulations of binary black hole systems using the Spectral Einstein Code (SpEC) are done on a computational domain that excises the regions inside the black holes. It is imperativ…
Search for Gravitational Waves from Binary Black Hole Inspiral, Merger and Ringdown in LIGO-Virgo Data from 2009-2010
The LIGO Scientific Collaboration, the Virgo Collaboration, J. Aasi +800
We report a search for gravitational waves from the inspiral, merger and ringdown of binary black holes (BBH) with total mass between 25 and 100 solar masses, in data taken at the…
Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data
J. Aasi, J. Abadie, B. P. Abbott +794
This paper presents results of an all-sky searches for periodic gravitational waves in the frequency range [50, 1190] Hz and with frequency derivative ranges of [-2 x 10^-9, 1.1 x…
Visualizing Spacetime Curvature via Frame-Drag Vortexes and Tidal Tendexes III. Quasinormal Pulsations of Schwarzschild and Kerr Black Holes
David A. Nichols, Aaron Zimmerman, Yanbei Chen +5
In recent papers, we and colleagues have introduced a way to visualize the full vacuum Riemann curvature tensor using frame-drag vortex lines and their vorticities, and tidal tende…
Visualizing Spacetime Curvature via Frame-Drag Vortexes and Tidal Tendexes II. Stationary Black Holes
Fan Zhang, Aaron Zimmerman, David A. Nichols +5
When one splits spacetime into space plus time, the Weyl curvature tensor (which equals the Riemann tensor in vacuum) splits into two spatial, symmetric, traceless tensors: the tid…
Divide-and-Conquer 3D Convex Hulls on the GPU
Jeffrey M. White, Kevin A. Wortman
We describe a pure divide-and-conquer parallel algorithm for computing 3D convex hulls. We implement that algorithm on GPU hardware, and find a significant speedup over comparable…