53 citations · 294 across the 17 of their papers we have counts for
18 papers
Cusp Formation in Merging Black Hole Horizons
Shilpa Kastha, Stamatis Vretinaris, Daniel Pook-Kolb +1
An important question in binary black hole mergers is to connect properties of the remnant black hole to those of the two initial black holes. These properties include not only the…
Parametric Lattices Are Better Quantizers in Dimensions 13 and 14
Daniel Pook-Kolb, Erik Agrell, Bruce Allen
New lattice quantizers with lower normalized second moments than previously reported are constructed in 13 and 14 dimensions and conjectured to be optimal. Our construction combine…
Optimization and Identification of Lattice Quantizers
Erik Agrell, Daniel Pook-Kolb, Bruce Allen
Lattices with minimal normalized second moments are designed using a new numerical optimization algorithm. Starting from a random lower-triangular generator matrix and applying sto…
Glued lattices are better quantizers than
Erik Agrell, Daniel Pook-Kolb, Bruce Allen
40 years ago, Conway and Sloane proposed using the highly symmetrical Coxeter-Todd lattice for quantization, and estimated its second moment. Since then, all published lis…
Properties of Quasi-local mass in binary black hole mergers
Daniel Pook-Kolb, Bowen Zhao, Lars Andersson +2
Identifying a general quasi-local notion of energy-momentum and angular momentum would be an important advance in general relativity with potentially important consequences for mat…
Nonlinear ringdown at the black hole horizon
Neev Khera, Ariadna Ribes Metidieri, Béatrice Bonga +6
The gravitational waves emitted by a perturbed black hole ringing down are well described by damped sinusoids, whose frequencies are those of quasinormal modes. Typically, first-or…
The Voronoi Region of the Barnes-Wall Lattice
Daniel Pook-Kolb, Erik Agrell, Bruce Allen
We give a detailed description of the Voronoi region of the Barnes-Wall lattice , including its vertices, relevant vectors, and symmetry group. The exact value of its quant…
Exact calculation of quantizer constants for arbitrary lattices
Daniel Pook-Kolb, Bruce Allen, Erik Agrell
We present an algorithm for the exact computer-aided construction of the Voronoi cells of lattices with known symmetry group. Our algorithm scales better than linearly with the tot…
Ultimate fate of apparent horizons during a binary black hole merger II: Horizons weaving back and forth in time
Daniel Pook-Kolb, Ivan Booth, Robie A. Hennigar
In this second part of a two-part paper, we discuss numerical simulations of a head-on merger of two non-spinning black holes. We resolve the fate of the original two apparent hori…
Ultimate fate of apparent horizons during a binary black hole merger I: Locating and understanding axisymmetric marginally outer trapped surfaces
Ivan Booth, Robie A. Hennigar, Daniel Pook-Kolb
In classical numerical relativity, marginally outer trapped surfaces (MOTSs) are the main tool to locate and characterize black holes. For five decades it has been known that durin…
What Happens to Apparent Horizons in a Binary Black Hole Merger?
Daniel Pook-Kolb, Robie A. Hennigar, Ivan Booth
We resolve the fate of the two original apparent horizons during the head-on merger of two non-spinning black holes. We show that following the appearance of the outer common horiz…
Quasinormal modes and their overtones at the common horizon in a binary black hole merger
Pierre Mourier, Xisco Jiménez Forteza, Daniel Pook-Kolb +2
It is expected that all astrophysical black holes in equilibrium are well described by the Kerr solution. Moreover, any black hole far away from equilibrium, such as one initially…
Horizons in a binary black hole merger II: Fluxes, multipole moments and stability
Daniel Pook-Kolb, Ofek Birnholtz, Jose Luis Jaramillo +2
We study in detail the dynamics and stability of marginally trapped surfaces during a binary black hole merger. This is the second in a two-part study. The first part studied the b…
Horizons in a binary black hole merger I: Geometry and area increase
Daniel Pook-Kolb, Ofek Birnholtz, Jose Luis Jaramillo +2
Recent advances in numerical relativity have revealed how marginally trapped surfaces behave when black holes merge. It is now known that interesting topological features emerge du…
Self-intersecting marginally outer trapped surfaces
Daniel Pook-Kolb, Ofek Birnholtz, Badri Krishnan +1
We have shown previously that a merger of marginally outer trapped surfaces (MOTSs) occurs in a binary black hole merger and that there is a continuous sequence of MOTSs which conn…
The interior of a binary black hole merger
Daniel Pook-Kolb, Ofek Birnholtz, Badri Krishnan +1
We find strong numerical evidence for a new phenomenon in a binary black hole spacetime, namely the merger of marginally outer trapped surfaces (MOTSs). By simulating the head-on c…
The existence and stability of marginally trapped surfaces
Daniel Pook-Kolb, Ofek Birnholtz, Badri Krishnan +1
Marginally outer trapped surfaces (MOTSs, or marginal surfaces in short) are routinely used in numerical simulations of black hole spacetimes. They are an invaluable tool for locat…
Numerical Approach for Corvino-Type Gluing of Brill-Lindquist Initial Data
Daniel Pook-Kolb, Domenico Giulini
Building on the work of Giulini and Holzegel (2005), a new numerical approach is developed for computing Cauchy data for Einstein's equations by gluing a Schwarzschild end to a Bri…