15 citations · 22 across the 9 of their papers we have counts for
9 papers
Quadratic Gravitational-Wave Scattering by Kerr Black Holes
Lennox S. Keeble, Hengrui Zhu, Lawrence E. Kidder +2
Second-order black-hole perturbation theory will be an important component of precision gravitational-wave modeling and tests of strong-field gravity with next-generation detectors…
Finite-Solid-Angle Boltzmann Radiation Transport on Dynamical Spacetimes in AthenaK
Hengrui Zhu, Alexander J. Dittmann, Lizhong Zhang +3
We extend the finite-solid-angle general relativistic radiation transport method of C. J. White et al. (2023) to time-dependent spacetimes represented in ADM form. This Valencia-ty…
Trapping, Irregular Waveforms, and Efficient Radiation in Ultra-relativistic Black Hole Encounters
Hengrui Zhu, Frans Pretorius, James M. Stone
We demonstrate that ultra-relativistic black hole encounters reveal a new regime of the two-body interaction in general relativity. Evolving equal-mass, nonspinning black holes wit…
AthenaK simulations of the binary black hole merger GW150914
David Radice, Rossella Gamba, Hengrui Zhu +1
We present new binary black hole simulations targeted to GW150914 using the GPU-accelerated code AthenaK. We compute the properties of the final remnant with the isolated horizon f…
Black hole spectroscopy: from theory to experiment
Emanuele Berti, Vitor Cardoso, Gregorio Carullo +65
The "ringdown" radiation emitted by oscillating black holes has great scientific potential. By carefully predicting the frequencies and amplitudes of black hole quasinormal modes a…
Performance-Portable Binary Neutron Star Mergers with AthenaK
Jacob Fields, Hengrui Zhu, David Radice +4
We introduce an extension to the AthenaK code for general-relativistic magnetohydrodynamics (GRMHD) in dynamical spacetimes using a 3+1 conservative Eulerian formulation. Like the…