Search Results - "SEKIGUCHI, Yuichiro"

Mass Ejection from the Remnant of a Binary Neutron Star Merger: Viscous-radiation Hydrodynamics Study by Fujibayashi, Sho, Kiuchi, Kenta, Nishimura, Nobuya, Sekiguchi, Yuichiro, Shibata, Masaru

“…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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Properties of Neutrino-driven Ejecta from the Remnant of a Binary Neutron Star Merger: Pure Radiation Hydrodynamics Case by Fujibayashi, Sho, Sekiguchi, Yuichiro, Kiuchi, Kenta, Shibata, Masaru

“…We performed general relativistic, long-term, axisymmetric neutrino radiation hydrodynamics simulations for the remnant formed after a binary neutron star…”
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Postmerger Mass Ejection of Low-mass Binary Neutron Stars by Fujibayashi, Sho, Wanajo, Shinya, Kiuchi, Kenta, Kyutoku, Koutarou, Sekiguchi, Yuichiro, Shibata, Masaru

“…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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Gravitational waves and neutrino emission from the merger of binary neutron stars by Sekiguchi, Yuichiro, Kiuchi, Kenta, Kyutoku, Koutarou, Shibata, Masaru

“…Numerical simulations for the merger of binary neutron stars are performed in full general relativity incorporating a finite-temperature (Shen's) equation of…”
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Ultra-delayed Neutrino-driven Explosion of Rotating Massive-star Collapse by Fujibayashi, Sho, Takahashi, Koh, Sekiguchi, Yuichiro, Shibata, Masaru

“…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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FORMATION OF OVERHEATED REGIONS AND TRUNCATED DISKS AROUND BLACK HOLES: THREE-DIMENSIONAL GENERAL RELATIVISTIC RADIATION-MAGNETOHYDRODYNAMICS SIMULATIONS by Takahashi, Hiroyuki R., Ohsuga, Ken, Kawashima, Tomohisa, Sekiguchi, Yuichiro

“…ABSTRACT Using three-dimensional general relativistic radiation-magnetohydrodynamics simulations of accretion flows around stellar mass black holes, we report…”
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FORMATION OF BLACK HOLE AND ACCRETION DISK IN A MASSIVE HIGH-ENTROPY STELLAR CORE COLLAPSE by SEKIGUCHI, Yuichiro, SHIBATA, Masaru

“…We present the first numerical result of fully general relativistic axisymmetric simulations for the collapse of a rotating high-entropy stellar core to a…”
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Effects of hyperons in binary neutron star mergers by Sekiguchi, Yuichiro, Kiuchi, Kenta, Kyutoku, Koutarou, Shibata, Masaru

“…Numerical simulations for the merger of binary neutron stars are performed in full general relativity incorporating both nucleonic and hyperonic…”
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Comprehensive Study of Mass Ejection and Nucleosynthesis in Binary Neutron Star Mergers Leaving Short-lived Massive Neutron Stars by Fujibayashi, Sho, Kiuchi, Kenta, Wanajo, Shinya, Kyutoku, Koutarou, Sekiguchi, Yuichiro, Shibata, Masaru

“…Abstract By performing general relativistic hydrodynamics simulations with an approximate neutrino radiation transfer, the properties of ejecta in the…”
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Properties of Neutrino Transfer in a Deformed Remnant of a Neutron Star Merger by Sumiyoshi, Kohsuke, Fujibayashi, Sho, Sekiguchi, Yuichiro, Shibata, Masaru

“…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 by Fujibayashi, Sho, Sekiguchi, Yuichiro, Shibata, Masaru, Wanajo, Shinya

“…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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Exploring binary-neutron-star-merger scenario of short-gamma-ray bursts by gravitational-wave observation by Kiuchi, Kenta, Sekiguchi, Yuichiro, Shibata, Masaru, Taniguchi, Keisuke

“…We elucidate the feature of gravitational waves (GWs) from a binary-neutron-star merger collapsing to a black hole by general relativistic simulation. We show…”
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ALPHA-CONSTRAINED QSE NUCLEOSYNTHESIS IN HIGH-ENTROPY AND FAST-EXPANDING MATERIAL by Fujibayashi, Sho, Takashi Yoshida, Yuichiro Sekiguchi

“…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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Semi-empirical fission model for r-process based on the recent experiments and three-dimensional Langevin approach by Ishizuka, Chikako, Tsubakihara, Kohsuke, Chiba, Satoshi, Sekiguchi, Yuichiro, Wanajo, Shinya

“…Nuclear fission of superheavy elements can affect the r-process nucleosynthesis via a fission cycling process. In that process, the identification of the…”
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Stellar Core Collapse in Full General Relativity with Microphysics: -- Formulation and Spherical Collapse Test by Sekiguchi, Y.

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Dynamical mass ejection from binary neutron star mergers: Radiation-hydrodynamics study in general relativity by Sekiguchi, Yuichiro, Kiuchi, Kenta, Kyutoku, Koutarou, Shibata, Masaru

“…We perform radiation-hydrodynamics simulations of binary neutron-star mergers in numerical relativity on the Japanese "K" supercomputer, taking into account…”
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EXPLICIT-IMPLICIT SCHEME FOR RELATIVISTIC RADIATION HYDRODYNAMICS by Takahashi, Hiroyuki R, OHSUGA, KEN, Sekiguchi, Yuichiro, Inoue, Tsuyoshi, Tomida, Kengo

“…We propose an explicit-implicit scheme for numerically solving special relativistic radiation hydrodynamic equations, which ensures a conservation of total…”
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Gravitational wave physics and astronomy in the nascent era by Arimoto, Makoto, Asada, Hideki, Cherry, Michael L, Fujii, Michiko S, Fukazawa, Yasushi, Harada, Akira, Hayama, Kazuhiro, Hosokawa, Takashi, Ioka, Kunihito, Itoh, Yoichi, Kanda, Nobuyuki, Kawabata, Koji S, Kawaguchi, Kyohei, Kawai, Nobuyuki, Kobayashi, Tsutomu, Kohri, Kazunori, Koshio, Yusuke, Kotake, Kei, Kumamoto, Jun, Machida, Masahiro N, Matsufuru, Hideo, Mihara, Tatehiro, Mori, Masaki, Morokuma, Tomoki, Mukohyama, Shinji, Nakano, Hiroyuki, Narikawa, Tatsuya, Negoro, Hitoshi, Nishizawa, Atsushi, Ohgami, Takayuki, Omukai, Kazuyuki, Sakamoto, Takanori, Sako, Shigeyuki, Sasada, Mahito, Sekiguchi, Yuichiro, Serino, Motoko, Soda, Jiro, Sugita, Satoshi, Sumiyoshi, Kohsuke, Susa, Hajime, Suyama, Teruaki, Takahashi, Hirotaka, Takahashi, Kazuya, Takiwaki, Tomoya, Tanaka, Takahiro, Tanaka, Masaomi, Tanikawa, Ataru, Tominaga, Nozomu, Uchikata, Nami, Utsumi, Yousuke, Vagins, Mark R, Yamada, Kei, Yoshida, Michitoshi

“…Abstract The detections of gravitational waves (GW) by the LIGO/Virgo collaborations provide various possibilities for both physics and astronomy. We are quite…”
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Current status of numerical-relativity simulations in Kyoto by Sekiguchi, Yuichiro, Kiuchi, Kenta, Kyutoku, Koutarou, Shibata, Masaru

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Radiation Magnetohydrodynamics for Black Hole-Torus System in Full General Relativity: A Step toward Physical Simulation by Shibata, Masaru, Sekiguchi, Yuichiro

“…Abstract A radiation-magnetohydrodynamic simulation for the black hole-torus system is performed in the framework of full general relativity for the first…”
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