133 citations · 1.2k across the 30 of their papers we have counts for
30 papers
Rotation-induced Relaxation of Supernova Constraints on Axionlike Particles
Tsurugi Takata, Kanji Mori, Ko Nakamura +1
We study how rotation modifies the constraints on MeV-scale axion-like particles (ALPs) coupled to photons derived from SN 1987A. We constrain the ALP parameter space based on both…
Potassium abundances in extremely metal poor stars: Implications for nucleosynthesis in the final stages of massive star evolution
M. N. Ishigaki, N. Tominaga, W. Aoki +5
We present a potassium (K) abundance analysis in extremely metal-poor (EMP) stars based on high-resolution () spectra obtained with the High Dispersion Spectrograph on…
Inhomogeneous stellar mixing in the final hours before the Cassiopeia A supernova
Toshiki Sato, Kai Matsunaga, Hiroyuki Uchida +10
Understanding stars and their evolution is a key goal of astronomical research and has long been a focus of human interest. In recent years, theorists have paid much attention to t…
Progenitor Dependence of Neutrino-driven Supernova Explosions with the Aid of Heavy Axion-like Particles
Tsurugi Takata, Kanji Mori, Ko Nakamura +1
We perform spherically symmetric simulations of core-collapse supernovae with the aid of heavy axion-like particles (ALPs) which interact with photons and redistribute energy withi…
Three-dimensional Magneto-hydrodynamic Simulations of Core-collapse Supernovae: I. Hydrodynamic evolution and protoneutron star properties
Ko Nakamura, Tomoya Takiwaki, Jin Matsumoto +1
We present results from three-dimensional, magnetohydrodynamic, core-collapse simulations of sixteen progenitors following until 0.5 s after bounce. We use non-rotating solar-metal…
Three-dimensional simulation of a core-collapse supernova for a binary star progenitor of SN 1987A
Ko Nakamura, Tomoya Takiwaki, Kei Kotake
We present results from a self-consistent, non-rotating core-collapse supernova simulation in three spatial dimensions using a binary evolution progenitor model of SN 1987A by Urus…