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Actinide-boosting r Process in Black Hole-Neutron Star Merger Ejecta
Shinya Wanajo, Sho Fujibayashi, Kota Hayashi +3
We examine nucleosynthesis in the ejecta of black hole-neutron star mergers based on the results of long-term neutrino-radiation-magnetohydrodynamics simulations for the first time…
Collapse of rotating massive stars leading to black hole formation and energetic supernovae
Sho Fujibayashi, Yuichiro Sekiguchi, Masaru Shibata +1
We explore a possible scenario of the explosion as a result of core collapses of rotating massive stars that leave a black hole by performing a radiation-viscous-hydrodynamics simu…
Lanthanide Features in Near-infrared Spectra of Kilonovae
Nanae Domoto, Masaomi Tanaka, Daiji Kato +3
The observations of GW170817/AT2017gfo have provided us with evidence that binary neutron star mergers are sites of -process nucleosynthesis. However, the observed signatures in…
Comprehensive study of mass ejection and nucleosynthesis in binary neutron star mergers leaving short-lived massive neutron stars
Sho Fujibayashi, Kenta Kiuchi, Shinya Wanajo +3
By performing general relativistic hydrodynamics simulations with an approximate neutrino-radiation transfer, the properties of ejecta in dynamical and post-merger phases are inves…
Electromagnetic counterparts of binary neutron star mergers leading to a strongly magnetized long-lived remnant neutron star
Kyohei Kawaguchi, Sho Fujibayashi, Kenta Hotokezaka +2
We explore the electromagnetic counterparts that will associate with binary neutron star mergers for the case that remnant massive neutron stars survive for s after…