172 citations · 957 across the 48 of their papers we have counts for
16 papers · 1 filter
Late-time tails in nonlinear evolutions of merging black holes
Marina De Amicis, Hannes Rüter, Gregorio Carullo +17
We uncover late-time gravitational-wave tails in fully nonlinear 3+1 dimensional numerical relativity simulations of merging black holes, using the highly accurate SpEC code. We ac…
Merging black holes with Cauchy-characteristic matching: Computation of late-time tails
Sizheng Ma, Mark A. Scheel, Jordan Moxon +5
Cauchy-characteristic matching (CCM) is a numerical-relativity technique that solves Einstein's equations on an effectively infinite computational domain, thereby eliminating syste…
Overtones and Nonlinearities in Binary Black Hole Ringdowns
Matthew Giesler, Sizheng Ma, Keefe Mitman +11
Using high-accuracy numerical relativity waveforms, we confirm the presence of numerous overtones of the , quasinormal mode early in the ringdown of binary black hole…
Echoes from beyond: Detecting gravitational-wave quantum imprints with LISA
Nils Deppe, Lavinia Heisenberg, Henri Inchauspé +7
We assess the prospects for detecting gravitational wave echoes arising due to the quantum nature of black hole horizons with LISA. In a recent proposal, Bekenstein's black hole ar…
Relieving scale disparity in binary black hole simulations
Nikolas A. Wittek, Leor Barack, Harald P. Pfeiffer +7
Worldtube excision is a method of reducing computational burden in Numerical Relativity simulations of binary black holes in situations where there is a good analytical model of th…
Simulating binary black hole mergers using discontinuous Galerkin methods
Geoffrey Lovelace, Kyle C. Nelli, Nils Deppe +28
Binary black holes are the most abundant source of gravitational-wave observations. Gravitational-wave observatories in the next decade will require tremendous increases in the acc…
Einstein-Klein-Gordon system via Cauchy-characteristic evolution: Computation of memory and ringdown tail
Sizheng Ma, Kyle C. Nelli, Jordan Moxon +5
Cauchy-characteristic evolution (CCE) is a powerful method for accurately extracting gravitational waves at future null infinity. In this work, we extend the previously implemented…
High-Precision Ringdown Surrogate Model for Non-Precessing Binary Black Holes
Lorena Magaña Zertuche, Leo C. Stein, Keefe Mitman +11
Highly precise and robust waveform models are required as improvements in detector sensitivity enable us to test general relativity with more precision than ever before. In this wo…
Binary neutron star mergers using a discontinuous Galerkin-finite difference hybrid method
Nils Deppe, Francois Foucart, Marceline S. Bonilla +18
We present a discontinuous Galerkin-finite difference hybrid scheme that allows high-order shock capturing with the discontinuous Galerkin method for general relativistic magnetohy…
Quasistationary hair for binary black hole initial data in scalar Gauss-Bonnet gravity
Peter James Nee, Guillermo Lara, Harald P. Pfeiffer +1
Recent efforts to numerically simulate compact objects in alternative theories of gravity have largely focused on the time-evolution equations. Another critical aspect is the const…
Improved frequency spectra of gravitational waves with memory in a binary-black-hole simulation
Yitian Chen, Michael Boyle, Nils Deppe +9
Numerical relativists can now produce gravitational waveforms with memory effects routinely and accurately. The gravitational-wave memory effect contains very low-frequency compone…
A Review of Gravitational Memory and BMS Frame Fixing in Numerical Relativity
Keefe Mitman, Michael Boyle, Leo C. Stein +8
Gravitational memory effects and the BMS freedoms exhibited at future null infinity have recently been resolved and utilized in numerical relativity simulations. With this, gravita…
Discontinuous Galerkin scheme for elliptic equations on extremely stretched grids
Nils L. Vu
Discontinuous Galerkin (DG) methods for solving elliptic equations are gaining popularity in the computational physics community for their high-order spectral convergence and their…
Scalarization of isolated black holes in scalar Gauss-Bonnet theory in the fixing-the-equations approach
Guillermo Lara, Harald P. Pfeiffer, Nikolas A. Wittek +6
One of the most promising avenues to perform numerical evolutions in theories beyond General Relativity is the fixing-the-equations approach, a proposal in which new ``driver'' equ…
Striking the right tone: toward a self-consistent framework for measuring black hole ringdowns
Teagan A. Clarke, Maximiliano Isi, Paul D. Lasky +9
The ringdown portion of a binary black hole merger consists of a sum of modes, each containing an infinite number of tones that are exponentially damped sinusoids. In principle, th…
Nonlinear Effects In Black Hole Ringdown From Scattering Experiments I: spin and initial data dependence of quadratic mode coupling
Hengrui Zhu, Justin L. Ripley, Frans Pretorius +13
We investigate quadratic quasinormal mode coupling in black hole spacetime through numerical simulations of single perturbed black holes using both numerical relativity and second-…