We systematically perform numerical-relativity simulations for low-mass black hole-neutron star mergers for the models with seven mass ratios Q = M-BH/M-NS ranging from 1.5 to 4.4, and three neutron-star equations of state, focusing on the propert...
We develop a method to compute low-eccentricity initial data of black hole-neutron star binaries in the puncture framework extending previous work on other types of compact binaries. In addition to adjusting the orbital angular velocity of the bin...
Long-term viscous neutrino-radiation hydrodynamics simulations in full general relativity are performed for a massive disk surrounding spinning stellar-mass black holes with mass M-BH = 4, 6, and 10 M-circle dot and initial dimensionless spin chi ...
Physical Review Research 2(4) 043039 2020年10月 [査読有り]
We reanalyze gravitational waves from binary-neutron-star mergers GW170817 and GW190425 using a numerical-relativity (NR) calibrated waveform model, the TF2+_KyotoTidal model, which includes nonlinear tidal terms. For GW170817, by imposing a unifo...
The Astrophysical Journal 901(2) 122 2020年10月 [査読有り]
We study the postmerger mass ejection of low-mass binary neutron stars (NSs) with the system mass of 2.5Mand subsequent nucleosynthesis by performing general-relativistic, neutrino-radiation viscous-hydrodynamics simulations in axial symmetry. We ...
The location of the cutoff in the gravitational-wave spectrum of black
hole-neutron star mergers is correlated strongly with the neutron-star radius
for the case that the neutron star is disrupted by the black hole during the
merger. However, the ...