97 citations · 144 across the 9 of their papers we have counts for
10 papers
Progenitor and Explosion Mechanism of 3C 397 Indicated from XRISM High-resolution Spectroscopy of Fe-group Elements
Hiroshi Nakajima, Yuken Ohshiro, Shing-Chi Leung +8
We present spatially resolved X-ray spectroscopy of the Type Ia supernova remnant 3C 397, one of the most promising candidates to have originated from a white dwarf with a mass clo…
Primordial Black Hole Triggered Type Ia Supernovae II: Comparison with Supernova Remnants and Galactic Chemical Evolution
Shing-Chi Leung, Seth Walther, Alexander Kusenko +2
The asteroid-mass class of Primordial Black Holes (PBHs) is one of the candidates for the dark matter in the universe. With a mass between $4 \times 10^{-17} < M_{\rm PBH} < 4 \tim…
Revisiting the Perseus Cluster III: Role of Aspherical Explosions on its Chemical Composition and Extension to Metal-Poor Stars and Galaxies
Shing-Chi Leung, Henry Yerdon, Seth Walther +2
The Perseus Cluster has been precisely measured by the legacy Hitomi telescope on the Si-group (Si, S, Ar, Ca) and Fe-group elements (Cr, Mn, Ni). These element abundance ratios pr…
Revisiting the Perseus Cluster II: Metallicity-Dependence of Massive Stars and Chemical Enrichment History
Shing-Chi Leung, Seth Walther, Henry Yerdon +2
The legacy Hitomi telescope has delivered the precise measurements of the chemical abundances in the Perseus Cluster, covering the Si-group (Si, S, Ar, Ca) and Fe-group elements (C…
Primordial Black Hole Triggered Type Ia Supernovae I: Impact on Explosion Dynamics and Light Curves
Shing-Chi Leung, Seth Walther, Ken'ichi Nomoto +1
Primordial black holes (PBHs) in the asteroid-mass window are compelling dark matter candidates, made plausible by the existence of black holes and by the variety of mechanisms of…
Revisiting the Perseus Cluster I: Resolving the Si/S/Ar/Ca ratios by Stellar Convection
Shing-Chi Leung, Ken'ichi Nomoto, Aurora Simionescu
Chemical abundance measurements from stars in the Milky Way to the intragalactic medium in the Perseus Cluster have challenged the spherical explosion models. Models in the literat…
On the Nucleosynthesis in Accretion-Induced Collapse of White Dwarfs
Chun-Ming Yip, Ming-Chung Chu, Shing-Chi Leung +1
It has long been hypothesized that accretion-induced collapse (AIC) of white dwarfs contribute to heavy chemical elements production in the universe. We present one-dimensional neu…
Hydrodynamics and Nucleosynthesis of Jet-Driven Supernovae II: Comparisons with Abundances of Extremely Metal-Poor Galaxies and Constraints on Supernova Progenitors
Shing-Chi Leung, Ken'ichi Nomoto
The spectra of several galaxies, including extremely metal-poor galaxies (EMPGs) from the EMPRESS survey, have shown that the abundances of some Si-group elements differ from "sphe…
Using Gaia DR2 to Constrain Local Dark Matter Density and Thin Dark Disk
Jatan Buch, John Shing Chau Leung, JiJi Fan
We use stellar kinematics from the latest Gaia data release (DR2) to measure the local dark matter density in a heliocentric cylinder of radius and…
Dark Matter Admixed Type Ia Supernovae
Shing-Chi Leung, Ming-Chung Chu, Lap-Ming Lin
We perform two-dimensional hydrodynamic simulations for the thermonuclear explosion of Chandrasekhar-mass white dwarfs with dark matter (DM) cores in Newtonian gravity. We include…