4 papers
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…
Gmunu: Toward multigrid based Einstein field equations solver for general-relativistic hydrodynamics simulations
Patrick Chi-Kit Cheong, Lap-Ming Lin, Tjonnie Guang-Feng Li
We present a new open-source axisymmetric general relativistic hydrodynamics code Gmunu (General-relativistic multigrid numerical solver) which uses a multigrid method to solve the…
Numerical studies on core collapse supernova in self-interacting massive scalar-tensor gravity
Patrick Chi-Kit Cheong, Tjonnie Guang Feng Li
We investigate stellar core collapse in scalar-tensor theory with a massive self-interacting scalar field. In these theories, strong long-lived inverse chirp signals could be induc…