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Gravitational waves from core collapse of rotating very-massive stars: 3D numerical relativity computation
Alan Tsz-Lok Lam, Masaru Shibata, Sho Fujibayashi
We numerically study the collapse of rotating, very-massive stellar cores with masses of , , , and into black holes using both axisymmetric and…
A first-principles binary neutron star merger model of GW170817, GRB170817A, and AT2017gfo
Kenta Kiuchi, Sho Fujibayashi, Kota Hayashi +6
The multimessenger observation of the binary neutron star merger event GW170817, associated with its electromagnetic counterparts GRB170817A and AT2017gfo, marked a milestone in as…
Explosions from Rotating Very Massive Star Collapses to Black Holes: Effects of Nuclear Burning
Sho Fujibayashi, Alan Tsz-Lok Lam, Yuichiro Sekiguchi +1
We investigate the collapse of rotating very massive and supermassive stellar cores using numerical relativity simulations including an alpha-chain nuclear reaction network and neu…
Non-LTE Ionization Modeling for Helium and Strontium in Neutron Star Merger Ejecta
Koya Chiba, Masaomi Tanaka, Shinya Wanajo +3
The material ejected from a binary neutron star merger produces "kilonova," a radioactively powered emission at ultraviolet, optical, and infrared wavelengths. The early-phase spec…