Quasiequilibrium states of black hole-neutron star binaries in the moving-puncture framework (2009)
Kyutoku, Koutarou, Shibata, Masaru, Taniguchi, Keisuke
General relativistic quasiequilibrium states of black hole-neutron star binaries are computed in the moving-puncture framework. We propose three conditions for determining the quasiequilibrium states...
Ando, Masaki, Kawamura, Seiji, Sato, Shuichi, Nakamura, Takashi, Tsubono, Kimio, Araya, Akito, ...
DECIGO pathfinder (DPF) is a milestone satellite mission for DECIGO (DECi-hertz Interferometer Gravitational wave Observatory), which is a future space gravitational wave antenna. DECIGO is expected...
Longterm general relativistic simulation of binary neutron stars collapsing to a black hole (2009)
Kiuchi, Kenta, Sekiguchi, Yuichiro, Shibata, Masaru, Taniguchi, Keisuke
General relativistic simulations for the merger of binary neutron stars are performed as an extension of a previous work\cite{Shibata:2006nm}. We prepare binary neutron stars with a large initial...
Gravitational waves from black hole-neutron star binaries I: Classification of waveforms (2009)
Shibata, Masaru, Kyutoku, Kohtaro, Yamamoto, Tetsuro, Taniguchi, Keisuke
Using our new numerical-relativity code SACRA, long-term simulations for inspiral and merger of black hole (BH)-neutron star (NS) binaries are performed, focusing particularly on gravitational...
Ando, Masaki, Kawamura, Seiji, Nakamura, Takashi, Tsubono, Kimio, Tanaka, Takahiro, Funaki, Ikkoh, ...
DECIGO pathfinder (DPF) is a milestone satellite mission for DECIGO (DECi-hertz Interferometer Gravitational wave Observatory) which is a future space gravitational wave antenna. DECIGO is expected...
The Japanese space gravitational wave antenna; DECIGO (2008)
Kawamura, Seiji, Ando, Masaki, Nakamura, Takashi, Tsubono, Kimio, Tanaka, Takahiro, Funaki, Ikkoh, ...
DECi-hertz Interferometer Gravitational wave Observatory (DECIGO) is the future Japanese space gravitational wave antenna. DECIGO is expected to open a new window of observation for gravitational...
Simulating coalescing compact binaries by a new code SACRA (2008)
Yamamoto, Tetsuro, Shibata, Masaru, Taniguchi, Keisuke
We report our new code (named SACRA) for numerical relativity simulations in which an adaptive mesh refinement algorithm is implemented. In this code, the Einstein equations are solved in the BSSN...
General relativistic simulations of magnetized binary neutron star mergers (2008)
Liu, Yuk Tung, Shapiro, Stuart L., Etienne, Zachariah B., Taniguchi, Keisuke
Binary neutron stars (NSNS) are expected to be among the leading sources of gravitational waves observable by ground-based laser interferometers and may be the progenitors of short-hard gamma ray...
Oda, Yuuichiro, Tokita, Kazutaka, Ota, Yoshihiko, Li, Ying, Taniguchi, Keisuke, Nishino, Norikazu, ...
C-terminus of S19 ribosomal protein (RP S19) endows the cross-linked homodimer with a dual effect on the C5a receptor in leucocyte chemoattraction; agonistic effect on the monocyte receptor, and...
Fully General Relativistic Simulations of Black Hole-Neutron Star Mergers (2007)
Etienne, Zachariah B., Faber, Joshua A., Liu, Yuk Tung, Shapiro, Stuart L., Taniguchi, Keisuke, Baumgarte, Thomas W.
Black hole-neutron star (BHNS) binaries are expected to be among the leading sources of gravitational waves observable by ground-based detectors, and may be the progenitors of short-hard gamma ray...
Masaru Shibata, Keisuke Taniguchi, Takashi Nakamura
In this paper, we present results obtained from our recent studies on the location of the innermost stable circular orbit (ISCO) for binary neutron stars (BNSs) in several levels of post Newtonian...
Shibata, Masaru, Taniguchi, Keisuke
We systematically perform the merger simulation of black hole-neutron star (BH-NS) binaries in full general relativity, focusing on the case that the NS is tidally disrupted. We prepare BH-NS...
Taniguchi, Keisuke, Baumgarte, Thomas W., Faber, Joshua A., Shapiro, Stuart L.
We construct new models of black hole-neutron star binaries in quasiequilibrium circular orbits by solving Einstein's constraint equations in the conformal thin-sandwich decomposition together with...
Relativistic hydrodynamics in the presence of puncture black holes (2007)
Faber, Joshua A., Baumgarte, Thomas W., Etienne, Zachariah B., Shapiro, Stuart L., Taniguchi, Keisuke
Many of the recent numerical simulations of binary black holes in vacuum adopt the moving puncture approach. This successful approach avoids the need to impose numerical excision of the black hole...
Quasiequilibrium black hole-neutron star binaries in general relativity (2007)
Taniguchi, Keisuke, Baumgarte, Thomas W., Faber, Joshua A., Shapiro, Stuart L.
We construct quasiequilibrium sequences of black hole-neutron star binaries in general relativity. We solve Einstein's constraint equations in the conformal thin-sandwich formalism, subject to black...
Quasiequilibrium sequences of black-hole--neutron-star binaries in general relativity (2006)
Taniguchi, Keisuke, Baumgarte, Thomas W., Faber, Joshua A., Shapiro, Stuart L.
We construct quasiequilibrium sequences of black hole-neutron star binaries for arbitrary mass ratios by solving the constraint equations of general relativity in the conformal thin-sandwich...
Faber, Joshua A., Baumgarte, Thomas W., Shapiro, Stuart L., Taniguchi, Keisuke, Rasio, Frederic A.
We have calculated the first dynamical evolutions of merging black hole-neutron star binaries that treat the combined spacetime in a nonperturbative general relativistic framework. Using the...
General Relativistic Binary Merger Simulations and Short Gamma Ray Bursts (2006)
Faber, Joshua A., Baumgarte, Thomas W., Shapiro, Stuart L., Taniguchi, Keisuke
The recent localization of some short-hard gamma ray bursts (GRBs) in galaxies with low star formation rates has lent support to the suggestion that these events result from compact object binary...
Shibata, Masaru, Taniguchi, Keisuke
Three-dimensional simulations for the merger of binary neutron stars (BNSs) are performed in the framework of full general relativity. We pay particular attention to the black hole (BH) formation...
Faber, Joshua A., Baumgarte, Thomas W., Shapiro, Stuart L., Taniguchi, Keisuke, Rasio, Frederic A.
We calculate the first dynamical evolutions of merging black hole-neutron star binaries that construct the combined black hole-neutron star spacetime in a general relativistic framework. We treat the...
Black hole-neutron star binaries in general relativity: effects of neutron star spin (2005)
Taniguchi, Keisuke, Baumgarte, Thomas W., Faber, Joshua A., Shapiro, Stuart L.
We present new sequences of general relativistic, quasiequilibrium black hole-neutron star binaries. We solve for the gravitational field in the conformal thin-sandwich decomposition of Einstein's...
Merger of binary neutron stars with realistic equations of state in full general relativity (2005)
Shibata, Masaru, Taniguchi, Keisuke, Uryu, Koji
We present numerical results of three-dimensional simulations for the merger of binary neutron stars (BNSs) in full general relativity. Hybrid equations of state (EOSs) are adopted to mimic realistic...
The final phase of inspiral of neutron stars: realistic equations of state (2004)
Gondek-Rosinska, Dorota, Bejger, Michal, Bulik, Tomek, Gourgoulhon, Eric, Haensel, Pawel, Limousin, Francois, ...
Coalescing compact star binaries are expected to be among the strongest sources of gravitational radiation to be seen by laser interferometers. We present calculations of the final phase of inspiral...
Collision dynamics of two barchan dunes simulated by a simple model (2004)
Katsuki, Atsunari, Nishimori, Hiraku, Endo, Noritaka, Taniguchi, Keisuke
The collision processes of two crescentic dunes called barchans are systematically studied using a simple computer simulation model. The simulated processes, coalescence, ejection and reorganization,...
The final phase of inspiral of neutron stars: realistic equations of state (2004)
Gondek-Rosinska, Dorota, Bejger, Michal, Bulik, Tomek, Gourgoulhon, Eric, Haensel, Pawel, Limousin, Francois, ...
Coalescing compact star binaries are expected to be among the strongest sources of gravitational radiation to be seen by laser interferometers. We present calculations of the final phase of inspiral...
The final phase of inspiral of neutron stars: realistic equations of state (2004)
Gondek-Rosinska, Dorota, Bejger, Michal, Bulik, Tomek, Gourgoulhon, Eric, Haensel, Pawel, Limousin, Francois, ...
Coalescing compact star binaries are expected to be among the strongest sources of gravitational radiation to be seen by laser interferometers. We present calculations of the final phase of inspiral...
Merger of binary neutron stars of unequal mass in full general relativity (2003)
Shibata, Masaru, Taniguchi, Keisuke, Uryu, Koji
We present results of three dimensional numerical simulations of the merger of unequal-mass binary neutron stars in full general relativity. A $\Gamma$-law equation of state...
Various features of quasiequilibrium sequences of binary neutron stars in general relativity (2003)
Taniguchi, Keisuke, Gourgoulhon, Eric
Quasiequilibrium sequences of binary neutron stars are numerically calculated in the framework of the Isenberg-Wilson-Mathews (IWM) approximation of general relativity. The results are presented for...
Merger of binary neutron stars of unequal mass in full general relativity (2003)
Shibata, Masaru, Taniguchi, Keisuke, Uryu, Koji
We present results of three dimensional numerical simulations of the merger of unequal-mass binary neutron stars in full general relativity. A $\Gamma$-law equation of state...
Taniguchi, Keisuke, Gourgoulhon, Eric
We present the first computations of quasiequilibrium binary neutron stars with different mass components in general relativity, within the Isenberg-Wilson-Mathews approximation. We consider both...
Measuring Neutron Star Radii with Gravitational Wave Detectors (2002)
Faber, Joshua A., Grandclement, Philippe, Rasio, Frederic A., Taniguchi, Keisuke
Coalescing binary neutron stars (NS) are expected to be an important source of gravitational waves (GW) detectable by laser interferometers. We present here a simple method for determining the...
Taniguchi, Keisuke, Gourgoulhon, Eric
We study equilibrium sequences of close binary systems on circular orbits and composed of different mass stars with polytropic equation of state in Newtonian gravity. The solving method is a...
Taniguchi, Keisuke, Gourgoulhon, Eric, Bonazzola, Silvano
We study equilibrium sequences of close binary systems composed of identical polytropic stars in Newtonian gravity. The solving method is a multi-domain spectral method which we have recently...
Taniguchi, Keisuke, Nakamura, Takashi
Solutions to equilibrium sequences of irrotational binary polytropic stars in Newtonian gravity are expanded in a power of $\epsilon=a_0/R$, where R and $a_0$ are the orbital separation of the binary...
Gravitational waves from inspiralling compact binaries with magnetic dipole moments (2000)
Ioka, Kunihito, Taniguchi, Keisuke
We investigate the effects of the magnetic dipole-dipole coupling and the electromagnetic radiation on the frequency evolution of gravitational waves from inspiralling binary neutron stars with...
Taniguchi, Keisuke, Nakamura, Takashi
A solution to an equilibrium of irrotational binary polytropic stars in Newtonian gravity is expanded in a power of \epsilon=a_0/R, where R and a_0 are the separation of the binary system and the...
The first post-Newtonian (PN) hydrostatic equations for an irrotational fluid are solved for an incompressible binary system. The equilibrium configuration of the binary system is given by a small...
Taniguchi, Keisuke, Asada, Hideki, Shibata, Masaru
First post-Newtonian (1PN) hydrostatic equations for an irrotational fluid which have been recently derived are solved for an incompressible star. The 1PN configurations are expressed as a...
Taniguchi, Keisuke, Shibata, Masaru
We analytically study gravitational radiation from corotating binary neutron stars composed of incompressible, homogeneous fluid in circular orbits. The energy and the angular momentum loss rates are...
Shibata, Masaru, Taniguchi, Keisuke, Nakamura, Takashi
In this paper, we present results obtained from our recent studies on the location of the innermost stable circular orbit (ISCO) for binary neutron stars (BNSs) in several levels of post Newtonian...
Solving the Darwin problem in the first post-Newtonian approximation of general relativity (1997)
Taniguchi, Keisuke, Shibata, Masaru
We analytically calculate the equilibrium sequence of the corotating binary stars of incompressible fluid in the first post-Newtonian(PN) approximation of general relativity. By calculating the total...
Shibata, Masaru, Taniguchi, Keisuke
Using the ellipsoidal model for the density configuration, we calculate the equilibrium sequence of the corotating binary stars of the polytropic equation of state in the first post-Newtonian...
Taniguchi, Keisuke, Nakamura, Takashi
The innermost stable circular orbits (ISCO) of coalescing neutron star-black hole binary are studied taking into account both the tidal and relativistic effects. We adopt the generalized...