Publications (93)
Statistical Properties of Gamma-Ray Burst Polarization
Kenji Toma, Takanori Sakamoto, Bing Zhang +6
Numerical study on the hydrodynamic instability of binary stars in the first post Newtonian approximation of general relativity
Masaru Shibata, Ken-ichi Oohara, Takashi Nakamura
Shallow Decay of Early X-ray Afterglows from Inhomogeneous Gamma-Ray Burst Jets
Kenji Toma, Kunihito Ioka, Ryo Yamazaki +1
Hurwitz zeta and Euler-Zagier-Hurwitz type of double zeta distributions and real zeros of these zeta functions
Takashi Nakamura
Gamma-Ray Bursts are precise distance indicators similar to Type Ia Supernovae?
Ryo Tsutsui, Takashi Nakamura, Daisuke Yonetoku +2
Long Duration X-Ray Flash and X-Ray Rich Gamma Ray Burst from Low Mass Population III Star
Daisuke Nakauchi, Yudai Suwa, Takanori Sakamoto +2
Possible existence of viable models of bi-gravity with detectable graviton oscillations by gravitational wave detectors
Antonio De Felice, Takashi Nakamura, Takahiro Tanaka
The Improved Ep-TL-Lp Diagram and a Robust Regression Method
Ryo Tsutsui, Takashi Nakamura, Daisuke Yonetoku +3
Unstable GRB photospheres and electron-positron annihilation lines
Kunihito Ioka, Kohta Murase, Kenji Toma +2
Is dark energy the only solution to the apparent acceleration of the present universe?
Hideo Iguchi, Takashi Nakamura, Ken-ichi Nakao
A Null Test of the Cosmological Constant
Takeshi Chiba, Takashi Nakamura
Determination of the equation of the state of the Universe using ~ 0.1 Hz Gravitational Wave Detectors
Ryuichi Takahashi, Takashi Nakamura
Cosmological X-Ray Flashes from Off-Axis Jets
Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura
X-ray Flashes from Off-axis Gamma-Ray Bursts
Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura
Possible direct method to determine the radius of a star from the spectrum of gravitational wave signals II : Spectra for various cases
Motoyuki Saijo, Takashi Nakamura
Possible direct method to determine the radius of a star from the spectrum of gravitational wave signals
Motoyuki Saijo, Takashi Nakamura
Gamma-Ray Bursts in $1.8 < z < 5.6$ Suggest that the Time Variation of the Dark Energy is Small
Yoshiki Kodama, Daisuke Yonetoku, Toshio Murakami +3
Redshift Dependent Lag-Luminosity Relation in 565 BASTE Gamma Ray Bursts
Ryo Tsutsui, Takashi Nakamura, Daisuke Yonetoku +3
A simple proof of the generalized strong recurrence for any non-zero parameter
Takashi Nakamura
A Unified Model of Short and Long Gamma-Ray Bursts, X-Ray Rich Gamma-Ray Bursts, and X-Ray Flashes
Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura +1
Black Hole Binary Formation in the Expanding Universe --- Three Body Problem Approximation ---
Kunihito Ioka, Takeshi Chiba, Takahiro Tanaka +1
Selberg's orthonormality conjecture and joint universality of L-functions
Yoonbok Lee, Takashi Nakamura, Åukasz PaÅkowski
A Unified Model of Short and Long Gamma-Ray Bursts, X-Ray Rich Gamma-Ray Bursts, and X-Ray Flashes
Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura
Off-axis Emission from the Beamed Afterglow of Gamma Ray Bursts and a Possible Interpretation of Slowly Declining X-Ray Afterglow of GRB980425
Takashi Nakamura
Expected EAGLE event rate towards the Magellanic Clouds
Takashi Nakamura, Ryoichi Nishi
High-energy cosmic-ray nuclei from high- and low-luminosity gamma-ray bursts and implications for multi-messenger astronomy
Kohta Murase, Kunihito Ioka, Shigehiro Nagataki +1
Wave Effects in Gravitational Lensing of Gravitational Waves from Chirping Binaries
Ryuichi Takahashi, Takashi Nakamura
A Model for Non High Energy Gamma Ray Bursts and Sources of Ultra High Energy Cosmic Rays
Takashi Nakamura
Simple proof of the functional relation for the Lerch type Tornheim double zeta function
Takashi Nakamura
Possible Origins of Dispersion of the Peak Energy--Brightness Correlations of Gamma-Ray Bursts
Daisuke Yonetoku, Toshio Murakami, Ryo Tsutsui +3
Detectability of bigravity with graviton oscillations using gravitational wave observations
Tatsuya Narikawa, Koh Ueno, Hideyuki Tagoshi +3
Blue Supergiant Model for Ultra-Long Gamma-Ray Burst with Superluminous-Supernova-Like Bump
Daisuke Nakauchi, Kazumi Kashiyama, Yudai Suwa +1
General Relativistic Numerical Simulation on Coalescing Binary Neutron Stars and Gauge-Invariant Gravitational Wave Extraction
Mari Kawamura, Ken-ichi Oohara, Takashi Nakamura
JASMIN: Japanese-American study of muon interactions and neutron detection
Hiroshi Nakashima, N. V. Mokhov, Yoshimi Kasugai +22
Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space
Naoki Seto, Seiji Kawamura, Takashi Nakamura
Constraints on $w_0$ and $w_a$ of Dark Energy from High Redshift Gamma Ray Bursts
Ryo Tsutsui, Takashi Nakamura, Daisuke Yonetoku +4
Possible Formation Scenario of the Quark Star of Maximum Mass around 0.7 solar mass
Takashi Nakamura
A Way to 3D Numerical Relativity --- Coalescing Binary Neutron Stars ---
Takashi Nakamura, Ken-ichi Oohara
Response of Interferometric Detectors to Scalar Gravitational Waves
Ken-ichi Nakao, Tomohiro Harada, Masaru Shibata +2
Equilibrium sequences of irrotational binary polytropic stars : The case of double polytropic stars
Keisuke Taniguchi, Takashi Nakamura
Any non-monomial polynomial of the Riemann zeta-function has complex zeros off the critical line
Takashi Nakamura, Åukasz PaÅkowski
The Luminosity Distance, the Equation of State, and the Geometry of the Universe
Takeshi Chiba, Takashi Nakamura
Gravitational Waves from Coalescing Black Hole MACHO Binaries
Takashi Nakamura, Misao Sasaki, Takahiro Tanaka +1
Luminous supernova-like UV/optical/infrared transients associated with ultra-long gamma-ray bursts from metal-poor blue supergiants
Kazumi Kashiyama, Daisuke Nakauchi, Yudai Suwa +2
Measuring Speed of Gravitational Waves by Observations of Photons and Neutrinos from Compact Binary Mergers and Supernovae
Atsushi Nishizawa, Takashi Nakamura
Near-Infrared Colors of Gamma-Ray Burst Afterglows and Cosmic Reionization History
Akio K. Inoue, Ryo Yamazaki, Takashi Nakamura
Peak Energy-Isotropic Energy Relation in the Off-Axis Gamma-Ray Burst Model
Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura
Identifying Subclasses of Long Gamma-Ray Bursts with Cumulative Light Curve Morphology of Prompt Emissions
Ryo Tsutsui, Takashi Nakamura, Daisuke Yonetoku +2
Possible Origin of Lognormal Distributions in Gamma-Ray Bursts
Kunihito Ioka, Takashi Nakamura
Determining the Equation of State of the Expanding Universe: Inverse Problem in Cosmology
Takashi Nakamura, Takeshi Chiba
Innermost Stable Circular Orbit of Coalescing Neutron Star-Black Hole Binary --- Generalized Pseudo-Newtonian Potential Approach ---
Keisuke Taniguchi, Takashi Nakamura
Intrisic Dispersion of Correlations among Ep, Lp, and Eiso of Gamma Ray Bursts depends on the quality of Data Set
Ryo Tsutsui, Takashi Nakamura, Daisuke Yonetoku +2
Neutron Spectra from Intermediate-Energy Nucleus-Nucleus Reactions
Hiroshi Iwase, Yoshiyuki Iwata, Takashi Nakamura +4
Oscillating scalar-field dark matter in supergravity
Osamu Seto, K. Kohri, Takashi Nakamura
Observational tests of x-matter models
Takeshi Chiba, Naoshi Sugiyama, Takashi Nakamura
Small localized black holes in a braneworld: Formulation and numerical method
Hideaki Kudoh, Takahiro Tanaka, Takashi Nakamura
Identification of 45 New Neutron-Rich Isotopes Produced by In-Flight Fission of a 238U Beam at 345 MeV/nucleon
Tetsuya Ohnishi, Toshiyuki Kubo*, Kensuke Kusaka +57
Low frequency gravitational waves from black hole MACHO binaries
Kunihito Ioka, Takahiro Tanaka, Takashi Nakamura
3D General Relativistic Simulations of Coalescing Binary Neutron Stars
Ken-ichi Oohara, Takashi Nakamura
Probing Early Cosmic Magnetic Fields through Pair Echos from High-Redshift GRBs
Keitaro Takahashi, Susumu Inoue, Kiyotomo Ichiki +1
Deci hertz Laser Interferometer can determine the position of the Coalescing Binary Neutron Stars within an arc minute a week before the final merging event to Black Hole
Ryuichi Takahashi, Takashi Nakamura
A possible observational evidence for $θ^{-2}$ angular distribution of opening half-angle of GRB jets
Daisuke Yonetoku, Ryo Yamazaki, Takashi Nakamura +1
Almost analytic solutions to equilibrium sequences of irrotational binary polytropic stars for n=1
Keisuke Taniguchi, Takashi Nakamura
GRB980425 in the Off-Axis Jet Model of the Standard GRBs
Ryo Yamazaki, Daisuke Yonetoku, Takashi Nakamura
Peak Luminosity-Spectral Lag Relation Caused by the Viewing Angle of the Collimated Gamma-Ray Bursts
Kunihito Ioka, Takashi Nakamura
Density Distribution and Shape of Galactic Dark Halo Can be Determined by Low Frequency Gravitational Waves ?
Kunihito Ioka, Takahiro Tanaka, Takashi Nakamura
Scalar gravitational wave from Oppenheimer-Snyder collapse in scalar- tensor theories of gravity
Tomohiro Harada, Takeshi Chiba, Ken-ichi Nakao +1
Multiple Sub-Jet Model of Gamma Ray Bursts and Possible Origin of X-ray Precursors and Post-cursors
Takashi Nakamura
Cosmological X-ray Flashes in the Off-Axis Jet Model
Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura
The Minimum Mass of the First Stars and the Anthropic Principle
Takashi Nakamura, Hideya Uehara, Takeshi Chiba
Ep-Eiso Correlation in a Multiple Subjet Model of Gamma-Ray Bursts
Kenji Toma, Ryo Yamazaki, Takashi Nakamura
Probing the Efficiency of Electron-Proton Coupling in Relativistic Collisionless Shocks through the Radio Polarimetry of Gamma-Ray Burst Afterglows
Kenji Toma, Kunihito Ioka, Takashi Nakamura
Cosmological Constraints from calibrated Yonetoku and Amati relation implies Fundamental plane of Gamma-ray bursts
Ryo Tsutsui, Takashi Nakamura, Daisuke Yonetoku +3
Gravitational Wave Memory of Gamma-Ray Burst Jets
Norichika Sago, Kunihito Ioka, Takashi Nakamura +1
An Off-Axis Jet Model For GRB980425 and Low Energy Gamma-Ray Bursts
Ryo Yamazaki, Daisuke Yonetoku, Takashi Nakamura
Multidimensional Shintani zeta functions and zeta distributions on R^d
Takahiro Aoyama, Takashi Nakamura
Anisotropy of the Cosmic Background Radiation implies the Violation of the Strong Energy Condition in Bianchi type I Universe
Takeshi Chiba, Shinji Mukohyama, Takashi Nakamura
A complete Riemann zeta distribution and the Riemann hypothesis
Takashi Nakamura
Microlensing of collimated Gamma-Ray Burst afterglows
Kunihito Ioka, Takashi Nakamura
Low-Luminosity GRB 060218: A Collapsar Jet from a Neutron Star, Leaving a Magnetar as a Remnant?
Kenji Toma, Kunihito Ioka, Takanori Sakamoto +1
Corrigendum for "The generalized strong recurrence for non-zero rational parameters" Archiv der Mathematik 95 (2010), 549-555
Takashi Nakamura, Åukasz PaÅkowski
Determining the Equation of State of the Expanding Universe Using a New Independent Variable
Takashi Nakamura, Takeshi Chiba
High Energy Neutrinos and Cosmic-Rays from Low-Luminosity Gamma-Ray Bursts?
Kohta Murase, Kunihito Ioka, Shigehiro Nagataki +1
Location of the innermost stable circular orbit of binary neutron stars in the post Newtonian approximations of general relativity
Masaru Shibata, Keisuke Taniguchi, Takashi Nakamura
Soft X-ray Extended Emissions of Short Gamma-Ray Bursts as Electromagnetic Counterparts of Compact Binary Mergers; Possible Origin and Detectability
Takashi Nakamura, Kazumi Kashiyama, Daisuke Nakauchi +3
Optical Synchrotron Precursors of Radio Hypernovae
Daisuke Nakauchi, Kazumi Kashiyama, Hiroki Nagakura +2
Behaviors of multivariable finite Euler products in probabilistic view
Takahiro Aoyama, Takashi Nakamura
A Possible Origin of Bimodal Distribution of Gamma-Ray Bursts
Kenji Toma, Ryo Yamazaki, Takashi Nakamura
A Unified Model for Gamma-Ray Bursts
Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura +1
The generalized strong recurrence for non-zero rational parameters
Takashi Nakamura
Delayed Flashes from Counter Jets of Gamma Ray Bursts
Ryo Yamazaki, Kunihito Ioka, Takashi Nakamura
Efficiency Crisis of Swift Gamma-Ray Bursts with Shallow X-ray Afterglows: Prior Activity or Time-Dependent Microphysics?
Kunihito Ioka, Kenji Toma, Ryo Yamazaki +1
Feasibility of Reconstructing the Quintessential Potential Using SNIa Data
Takeshi Chiba, Takashi Nakamura