6 papers
Progenitor Dependence of Hadron-quark Phase Transition in Failing Core-collapse Supernovae
Shuai Zha, Evan P. O'Connor, André da Silva Schneider
We study the consequences of a hadron-quark phase transition (PT) in failing core-collapse supernovae (CCSNe) which give birth to stellar-mass black holes (BH). We perform a suite…
Accretion-Induced Collapse of Dark Matter Admixed White Dwarfs -- II: Rotation and Gravitational-wave Signals
Shuai Zha, Ming-Chung Chu, Shing-Chi Leung +1
We present axisymmetric hydrodynamical simulations of accretion-induced collapse (AIC) of dark matter (DM) admixed rotating white dwarfs (WD) and their burst gravitational-wave (GW…
Accretion-Induced Collapse of Dark Matter Admixed White Dwarfs -- I: Formation of Low-mass Neutron Stars
Shing-Chi Leung, Shuai Zha, Ming-Chung Chu +2
Recently observed pulsars with masses challenge the conventional neutron star (NS) formation path by core-collapse supernova (CCSN). Using spherically symmetr…
Evolution of ONeMg Core in Super-AGB Stars towards Electron-Capture Supernovae: Effects of Updated Electron-Capture Rate
Shuai Zha, Shing-Chi Leung, Toshio Suzuki +1
Stars with evolve to form a strongly degenerate ONeMg core. When the core mass becomes close to the Chandrasekhar mass, the core undergoes electron captures…
Electron-capture Rates in Ne for a Forbidden Transition to the Ground State of F Relevant to Final Evolution of High-density O-Ne-Mg Cores
Toshio Suzuki, Shuai Zha, Shing-Chi Leung +1
Electron capture on Ne is critically important for the final stage of evolution of stars with the initial masses of 8 - 10 . In the present paper, we evaluate ele…
Constraints on the Chemical Enrichment History of the Perseus Cluster of Galaxies from High-Resolution X-ray Spectroscopy
A. Simionescu, S. Nakashima, H. Yamaguchi +32
High-resolution spectroscopy of the core of the Perseus Cluster of galaxies, using the satellite above 2 keV and the - Reflection Grating Spectrometer at lowe…