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High resolution numerical-relativity simulations for the merger of binary magnetized neutron stars
Kenta Kiuchi, Koutarou Kyutoku, Yuichiro Sekiguchi +2
We perform high-resolution magnetohydrodynamics simulations of binary neutron star mergers in numerical relativity on the Japanese supercomputer K. The neutron stars and merger rem…
Reducing orbital eccentricity in initial data of binary neutron stars
Koutarou Kyutoku, Masaru Shibata, Keisuke Taniguchi
We develop a method to compute low-eccentricity initial data of binary neutron stars required to perform realistic simulations in numerical relativity. The orbital eccentricity is…
Effective No-Hair Relations for Neutron Stars and Quark Stars: Relativistic Results
Kent Yagi, Koutarou Kyutoku, George Pappas +2
Astrophysical charge-free black holes are known to satisfy no-hair relations through which all multipole moments can be specified in terms of just their mass and spin angular momen…
Production of all the r-process nuclides in the dynamical ejecta of neutron star mergers
Shinya Wanajo, Yuichiro Sekiguchi, Nobuya Nishimura +3
Recent studies suggest that binary neutron star (NS-NS) mergers robustly produce the heavy r-process nuclei above the atomic mass number A ~ 130 because of their ejecta consisting…