Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Hayashi, Kota"'
We performed the longest numerical-relativity neutrino-radiation magnetohydrodynamics simulation for a binary neutron star merger that extends to $\approx1.5\mathrm{\,s}$ after the merger. We consider the binary model that undergoes the prompt collap
Externí odkaz:
http://arxiv.org/abs/2410.10958
Autor:
Chen, Shichuan, Wang, Luohan, Hayashi, Kota, Kawaguchi, Kyohei, Kiuchi, Kenta, Shibata, Masaru
We study the merger of black hole-neutron star (BH-NS) binaries in numerical relativity, focusing on the properties of the remnant disk and the ejecta, varying the mass of compactness of the NS and the mass and spin of the BH. We find that within the
Externí odkaz:
http://arxiv.org/abs/2404.18714
Autor:
Kawaguchi, Kyohei, Domoto, Nanae, Fujibayashi, Sho, Hayashi, Kota, Hamidani, Hamid, Shibata, Masaru, Tanaka, Masaomi, Wanajo, Shinya
We study long-term evolution of the matter ejected in a black-hole neutron-star (BH-NS) merger employing the results of a long-term numerical-relativity simulation and nucleosynthesis calculation, in which both dynamical and post-merger ejecta format
Externí odkaz:
http://arxiv.org/abs/2404.15027
Autor:
Hayashi, Kota
甲第24409号
理博第4908号
新制||理||1701(附属図書館)
学位規則第4条第1項該当
Doctor of Science
Kyoto University
DFAM
理博第4908号
新制||理||1701(附属図書館)
学位規則第4条第1項該当
Doctor of Science
Kyoto University
DFAM
Externí odkaz:
http://hdl.handle.net/2433/283528
Autor:
Wanajo, Shinya, Fujibayashi, Sho, Hayashi, Kota, Kiuchi, Kenta, Sekiguchi, Yuichiro, Shibata, Masaru
We examine nucleosynthesis in the ejecta of black hole-neutron star mergers based on the results of self-consistent, long-term neutrino-radiation-magnetohydrodynamics simulations for the first time. We find that the combination of dynamical and post-
Externí odkaz:
http://arxiv.org/abs/2212.04507
As a follow-up study of our previous work, numerical-relativity simulations for seconds-long black hole-neutron star mergers are performed for a variety of setups. Irrespective of the initial and symmetry conditions, we find qualitatively universal e
Externí odkaz:
http://arxiv.org/abs/2211.07158
Autor:
Kiuchi, Kenta, Fujibayashi, Sho, Hayashi, Kota, Kyutoku, Koutarou, Sekiguchi, Yuichiro, Shibata, Masaru
We perform a general-relativistic neutrino-radiation magnetohydrodynamic simulation of a one second-long binary neutron star merger on Japanese supercomputer Fugaku using about $72$ million CPU hours with $20,736$ CPUs. We consider an asymmetric bina
Externí odkaz:
http://arxiv.org/abs/2211.07637
Autor:
Hasegawa, Seiju, Kanoda, Masatoshi, Tamura, Mamoru, Hayashi, Kota, Tokonami, Shiho, Iida, Takuya, Imura, Kohei
Publikováno v:
Journal of Chemical Physics; 8/7/2024, Vol. 161 Issue 5, p1-7, 7p
Autor:
Hayashi, Kota, Fujibayashi, Sho, Kiuchi, Kenta, Kyutoku, Koutarou, Sekiguchi, Yuichiro, Shibata, Masaru
Publikováno v:
Phys. Rev. D 106, 023008 (2022)
Seconds-long numerical-relativity simulations for black hole-neutron star mergers are performed for the first time to obtain a self-consistent picture of the merger and post-merger evolution processes. To investigate the case that tidal disruption ta
Externí odkaz:
http://arxiv.org/abs/2111.04621
Autor:
Dudi, Reetika, Adhikari, Ananya, Brügmann, Bernd, Dietrich, Tim, Hayashi, Kota, Kawaguchi, Kyohei, Kiuchi, Kenta, Kyutoku, Koutarou, Shibata, Masaru, Tichy, Wolfgang
The third observing run of the LIGO-Virgo collaboration has resulted in about hundred gravitational-wave triggers including the binary neutron star merger GW190425. However, none of these events have been accompanied with an electromagnetic transient
Externí odkaz:
http://arxiv.org/abs/2109.04063