252 citations · 2k across the 48 of their papers we have counts for
7 papers · 1 filter
A low-mass binary neutron star: long-term ejecta evolution and kilonovae with weak blue emission
Kyohei Kawaguchi, Sho Fujibayashi, Masaru Shibata +2
We study the long-term evolution of ejecta formed in a binary neutron star (BNS) merger that results in a long-lived remnant NS by performing a hydrodynamics simulation with the ou…
Properties of the remnant disk and the dynamical ejecta produced in low-mass black hole-neutron star mergers
Kota Hayashi, Kyohei Kawaguchi, Kenta Kiuchi +2
We systematically perform numerical-relativity simulations for low-mass black hole-neutron star mergers for the models with seven mass ratios ranging from…
Reducing orbital eccentricity in initial data of black hole--neutron star binaries in the puncture framework
Koutarou Kyutoku, Kyohei Kawaguchi, Kenta Kiuchi +2
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 binari…
Simulations of early kilonova emission from neutron star mergers
Smaranika Banerjee, Masaomi Tanaka, Kyohei Kawaguchi +2
We present radiative transfer simulations for blue kilonovae hours after neutron star (NS) mergers by performing detailed opacity calculations for the first time. We calculate atom…
Overview of KAGRA : KAGRA science
KAGRA Collaboration, T. Akutsu, M. Ando +240
KAGRA is a newly build gravitational-wave observatory, a laser interferometer with 3 km arm length, located in Kamioka, Gifu, Japan. In this paper in the series of KAGRA-featured a…
On the possibility of GW190425 being a black hole--neutron star binary merger
Koutarou Kyutoku, Sho Fujibayashi, Kota Hayashi +4
We argue that the kilonova/macronova associated with the gravitational-wave event GW190425 could have been bright enough to be detected if it was caused by the merger of a low-mass…
Constraint on the ejecta mass for a black hole-neutron star merger event candidate S190814bv
Kyohei Kawaguchi, Masaru Shibata, Masaomi Tanaka
We derive the upper limit to the ejecta mass of S190814bv, a black hole-neutron star merger candidate, through the radiative transfer simulations for kilonovae with the realistic e…