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Mass Ejection from the Remnant of a Binary Neutron Star Merger: Viscous-Radiation Hydrodynamics Study
Sho Fujibayashi, Kenta Kiuchi, Nobuya Nishimura +2
We perform long-term general relativistic neutrino radiation hydrodynamics simulations (in axisymmetry) for a massive neutron star (MNS) surrounded by a torus, which is a canonical…
Modeling GW170817 based on numerical relativity and its implications
Masaru Shibata, Sho Fujibayashi, Kenta Hotokezaka +4
Gravitational-wave observation together with a large number of electromagnetic observations shows that the source of the latest gravitational-wave event, GW170817, detected primari…
Repeating and Non-repeating Fast Radio Bursts from Binary Neutron Star Mergers
Shotaro Yamasaki, Tomonori Totani, Kenta Kiuchi
Most of fast radio bursts (FRB) do not show evidence for repetition, and such non-repeating FRBs may be produced at the time of a merger of binary neutron stars (BNS), provided tha…
Global simulations of strongly magnetized remnant massive neutron stars formed in binary neutron star mergers
Kenta Kiuchi, Koutarou Kyutoku, Yuichiro Sekiguchi +1
We perform a general-relativistic magnetohydrodynamics simulation for ms after merger of a binary neutron star to a remnant massive neutron star (RMNS) with a high spa…
Neutrino transport in black hole-neutron star binaries: neutrino emission and dynamical mass ejection
Koutarou Kyutoku, Kenta Kiuchi, Yuichiro Sekiguchi +2
We study the merger of black hole-neutron star binaries by fully general-relativistic neutrino-radiation-hydrodynamics simulations throughout the coalescence, particularly focusing…
High-Energy Neutrino Emission from Short Gamma-Ray Bursts: Prospects for Coincident Detection with Gravitational Waves
Shigeo S. Kimura, Kohta Murase, Peter Mészáros +1
We investigate current and future prospects for coincident detection of high-energy neutrinos and gravitational waves (GWs). Short gamma-ray bursts (SGRBs) are believed to originat…
Sub-radian-accuracy gravitational waveforms of coalescing binary neutron stars in numerical relativity
Kenta Kiuchi, Kyohei Kawaguchi, Koutarou Kyutoku +3
Extending our previous studies, we perform high-resolution simulations of inspiraling binary neutron stars in numerical relativity. We thoroughly carry through a convergence study…
Gravitational waves from remnant massive neutron stars of binary neutron star merger: Viscous hydrodynamics effects
Masaru Shibata, Kenta Kiuchi
Employing a simplified version of the Israel-Stewart formalism of general-relativistic shear-viscous hydrodynamics, we explore the evolution of a remnant massive neutron star of bi…
General relativistic viscous hydrodynamics of differentially rotating neutron stars
Masaru Shibata, Kenta Kiuchi, Yu-ichiro Sekiguchi
Employing a simplified version of the Israel-Stewart formalism for general-relativistic shear-viscous hydrodynamics, we perform axisymmetric general-relativistic simulations for a…
Properties of Neutrino-driven Ejecta from the Remnant of Binary Neutron Star Merger : Purely Radiation Hydrodynamics Case
Sho Fujibayashi, Yuichiro Sekiguchi, Kenta Kiuchi +1
We performed general relativistic, long-term, axisymmetric neutrino radiation hydrodynamics simulations for the remnant formed after the binary neutron star merger, which consist o…