341 citations · 4.8k across the 57 of their papers we have counts for
57 papers
Spinning primordial black holes formed during a matter-dominated era
Eloy de Jong, Josu C. Aurrekoetxea, Eugene A. Lim +1
We study the formation of spinning primordial black holes during an early matter-dominated era. Using non-linear 3+1D general relativistic simulations, we compute the efficiency of…
Electromagnetic instability of compact axion stars
Liina M. Chung-Jukko, Eugene A. Lim, David J. E. Marsh +3
If the dark matter is composed of axions, then axion stars are expected to be abundant in the Universe. We demonstrate in fully non-linear (3+1) numerical relativity the instabilit…
Unequal-mass boson-star binaries: Initial data and merger dynamics
Tamara Evstafyeva, Ulrich Sperhake, Thomas Helfer +4
We present a generalization of the curative initial data construction derived for equal-mass compact binaries in Helfer {\it et al} (2019 Phys. Rev. D 99 044046; 2022 Class. Quantu…
The Gravitational Afterglow of Boson Stars
Robin Croft, Thomas Helfer, Bo-Xuan Ge +5
In this work we study the long-lived post-merger gravitational wave signature of a boson-star binary coalescence. We use full numerical relativity to simulate the post-merger and t…
CTTK: A new method to solve the initial data constraints in numerical relativity
Josu C. Aurrekoetxea, Katy Clough, Eugene A. Lim
In numerical relativity simulations with non-trivial matter configurations, one must solve the Hamiltonian and momentum constraints of the ADM formulation for the metric variables…
Where is the ringdown? Reconstructing quasinormal modes from dispersive waves
Josu C. Aurrekoetxea, Pedro G. Ferreira, Katy Clough +2
We study the generation and propagation of gravitational waves in scalar-tensor gravity using numerical relativity simulations of scalar field collapses beyond spherical symmetry.…