37 citations · 100 across the 11 of their papers we have counts for
13 papers
A Multidimensional General-Relativistic Boltzmann Solver for Neutrino Transport: Implementation, Discretization and Optimization
Arthur Offermans, Harry Ho-Yin Ng, Patrick Chi-Kit Cheong +2
We present the implementation of a multidimensional general-relativistic Boltzmann solver for neutrino transport using the finite volume method. We extend the general-relativistic…
Spinning down neutron-star merger remnants with the Tayler-Spruit dynamo: Global simulations reveal the formation of massive disks and neutron-rich ejecta
Harry Ho-Yin Ng, Elias R. Most
Magnetic-field amplification and angular momentum (AM) transport critically shape the secular evolution, lifetime, and electromagnetic signatures of binary neutron-star merger remn…
GRACE: An Open-Source Framework for GPU-Accelerated Numerical Relativity
Carlo Musolino, Christian Ecker, Konrad Topolski +6
We present GRACE, a new GPU-accelerated numerical-relativity framework designed to run efficiently on heterogeneous high-performance computing platforms. Developed from scratch and…
The initial spin matters: the impact of rapid rotation on magnetic-field amplification at merger
Harry Ho-Yin Ng, Jin-Liang Jiang, Luciano Rezzolla
A couple of milliseconds after the merger of a binary system of neutron stars can play a fundamental role in amplifying the comparatively low initial magnetic fields into magnetar…
Long-term impact of the magnetic-field strength on the evolution and electromagnetic emission by neutron-star merger remnants
Jin-Liang Jiang, Harry Ho-Yin Ng, Michail Chabanov +1
Numerical simulations are essential to understand the complex physics accompanying the merger of binary systems of neutron stars. However, these simulations become computationally…
Distinct neutrino signatures and onset condition of quark deconfinement in accretion-induced collapse of white dwarfs
Juno C. L. Chan, Harry Ho-Yin Ng, Patrick Chi-Kit Cheong
We present the first general relativistic, neutrino-radiation hydrodynamics simulations of accretion-induced collapse (AIC) extending to seconds after core bounce, using realistic…
Accurate muonic interactions in neutron star mergers and impact on heavy-element nucleosynthesis
Harry Ho-Yin Ng, Carlo Musolino, Samuel D. Tootle +1
The abundances resulting from -process nucleosynthesis as predicted by simulations of binary neutron star (BNS) mergers remain an open question as the current state of the art i…
Influence of neutrino-electron scattering and neutrino-pair annihilation on hypermassive neutron star
Patrick Chi-Kit Cheong, Francois Foucart, Harry Ho-Yin Ng +4
We investigate the influence of inelastic neutrino microphysics in general-relativistic magnetohydrodynamics simulations of a hypermassive neutron star. In particular, we include s…
A hybrid approach to long-term binary neutron-star simulations
Harry Ho-Yin Ng, Jin-Liang Jiang, Carlo Musolino +3
One of the main challenges in the numerical modeling of binary neutron-star (BNS) mergers is long-term simulations of the post-merger remnant over timescales of the order of second…
General-relativistic radiation transport scheme in Gmunu II: Implementation of novel microphysical library for neutrino radiation -- Weakhub
Harry Ho-Yin Ng, Patrick Chi-Kit Cheong, Alan Tsz-Lok Lam +1
We introduce \texttt{Weakhub}, a novel neutrino microphysics library that provides opacities and kernels beyond conventional interactions used in the literature. This library inclu…
General-relativistic radiation transport scheme in I: Implementation of two-moment based multi-frequency radiative transfer and code tests
Patrick Chi-Kit Cheong, Harry Ho-Yin Ng, Alan Tsz-Lok Lam +1
We present the implementation of two-moment based general-relativistic multi-group radiation transport module in the eneral-relativistic ltigrid $\texttt{n…
Gravitational-wave asteroseismology with f-modes from neutron star binaries at the merger phase
Harry Ho-Yin Ng, Patrick Chi-Kit Cheong, Lap-Ming Lin +1
Gravitational-wave signals from coalescing binary neutron stars can yield important information about the properties of nuclear-matter equation of state from the early part of the…
Gmunu: Paralleled, grid-adaptive, general-relativistic magnetohydrodynamics in curvilinear geometries in dynamical spacetimes
Patrick Chi-Kit Cheong, Alan Tsz-Lok Lam, Harry Ho-Yin Ng +1
We present an update of the General-relativistic multigrid numerical (Gmunu) code, a parallelized, multi-dimensional curvilinear, general relativistic magnetohydrodynamics code wit…