Search Results - "Fujibayashi, Sho"
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Mass Ejection from the Remnant of a Binary Neutron Star Merger: Viscous-radiation Hydrodynamics Study
Published in The Astrophysical journal (10-06-2018)“…We perform long-term general relativistic neutrino radiation hydrodynamics simulations (in axisymmetry) for a massive neutron star (MNS) surrounded by a torus,…”
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2
Properties of Neutrino-driven Ejecta from the Remnant of a Binary Neutron Star Merger: Pure Radiation Hydrodynamics Case
Published in The Astrophysical journal (10-09-2017)“…We performed general relativistic, long-term, axisymmetric neutrino radiation hydrodynamics simulations for the remnant formed after a binary neutron star…”
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3
Postmerger Mass Ejection of Low-mass Binary Neutron Stars
Published in The Astrophysical journal (01-10-2020)“…Abstract We study the postmerger mass ejection of low-mass binary neutron stars (NSs) with the system mass of 2.5 M ⊙ and subsequent nucleosynthesis by…”
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Ultra-delayed Neutrino-driven Explosion of Rotating Massive-star Collapse
Published in The Astrophysical journal (01-10-2021)“…Abstract Long-term neutrino-radiation hydrodynamics simulations in full general relativity are performed for the collapse of rotating massive stars that are…”
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Electromagnetic Counterparts of Binary-neutron-star Mergers Leading to a Strongly Magnetized Long-lived Remnant Neutron Star
Published in The Astrophysical journal (01-07-2022)“…Abstract We explore the electromagnetic counterparts that will associate with binary-neutron-star mergers for the case that remnant massive neutron stars…”
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Comprehensive Study of Mass Ejection and Nucleosynthesis in Binary Neutron Star Mergers Leaving Short-lived Massive Neutron Stars
Published in The Astrophysical journal (01-01-2023)“…Abstract By performing general relativistic hydrodynamics simulations with an approximate neutrino radiation transfer, the properties of ejecta in the…”
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7
Properties of Neutrino Transfer in a Deformed Remnant of a Neutron Star Merger
Published in The Astrophysical journal (01-02-2021)“…We study properties of neutrino transfer in a remnant of a neutron star merger, consisting of a massive neutron star and a surrounding torus. We perform…”
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Collapse of Rotating Massive Stars Leading to Black Hole Formation and Energetic Supernovae
Published in The Astrophysical journal (01-10-2023)“…Abstract We explore a possible explosion scenario resulting from core collapses of rotating massive stars that leave a black hole by performing…”
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ALPHA-CONSTRAINED QSE NUCLEOSYNTHESIS IN HIGH-ENTROPY AND FAST-EXPANDING MATERIAL
Published in The Astrophysical journal (10-02-2016)“…ABSTRACT We investigate the nucleosynthesis process in high-entropy ( ) and very fast expanding ( ) materials. In such a material with the electron fraction…”
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10
A Low-mass Binary Neutron Star: Long-term Ejecta Evolution and Kilonovae with Weak Blue Emission
Published in The Astrophysical journal (01-06-2021)“…Abstract We study the long-term evolution of ejecta formed in a binary neutron star (NS) merger that results in a long-lived remnant NS by performing a…”
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NUCLEOSYNTHESIS IN NEUTRINO-DRIVEN WINDS IN HYPERNOVAE
Published in The Astrophysical journal (10-09-2015)“…ABSTRACT We investigate the nucleosynthesis in the neutrino-driven winds blown off from a massive proto-neutron star (mPNS) temporarily formed during the…”
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12
Kilonovae of binary neutron star mergers leading to short-lived remnant neutron star formation
Published in Monthly notices of the Royal Astronomical Society (01-09-2023)“…ABSTRACT We study kilonova emission from binary neutron star (BNS) mergers for the case that a remnant massive neutron star (MNS) forms and collapses to a…”
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13
Variety of disc wind-driven explosions in massive rotating stars
Published in Monthly notices of the Royal Astronomical Society (27-02-2024)“…ABSTRACT We perform a set of two-dimensional, non-relativistic, hydrodynamics simulations for supernova-like explosions associated with stellar core collapse…”
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Self-Consistent Picture of the Mass Ejection from a One Second Long Binary Neutron Star Merger Leaving a Short-Lived Remnant in a General-Relativistic Neutrino-Radiation Magnetohydrodynamic Simulation
Published in Physical review letters (07-07-2023)“…We perform a general-relativistic neutrino-radiation magnetohydrodynamic simulation of a one second-long binary neutron star merger on the Japanese…”
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Long-term Monte Carlo based neutrino-radiation viscous-hydrodynamics simulations for a merger remnant black hole-torus system
Published 03-10-2024“…We present our new general relativistic Monte Carlo (MC)-based neutrino radiation hydrodynamics code designed to solve axisymmetric systems with several…”
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Threshold mass of the general relativistic instability for supermassive star cores
Published 21-08-2024“…The dependence of the final fate of supermassive star (SMS) cores on their mass and angular momentum is studied with simple modeling. SMS cores in the hydrogen…”
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Powerful explosions from the collapse of rotating supermassive stars
Published 21-08-2024“…We perform new general relativistic hydrodynamics simulations for collapses of rotating supermassive star cores with an approximate nuclear burning up to…”
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A Monte-Carlo based relativistic radiation hydrodynamics code with a higher-order scheme
Published 26-09-2022“…We develop a new relativistic radiation hydrodynamics code based on the Monte-Carlo algorithm. In this code, we implement a new scheme to achieve the…”
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Supernova-like explosion of massive rotating stars from disks surrounding a black hole
Published 05-09-2023“…We perform a new general-relativistic viscous-radiation hydrodynamics simulation for supernova-like explosion associated with stellar core collapse of rotating…”
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Long-term evolution of neutron-star merger remnants in general relativistic resistive-magnetohydrodynamics with a mean-field dynamo term
Published 17-09-2021“…Phys. Rev. D 104, 2021, 063026 Long-term neutrino-radiation resistive-magnetohydrodynamics simulations in full general relativity are performed for a system…”
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