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7 papers · 2 filters
General Relativistic MHD Simulations of the Gravitational Collapse of a Rotating Star with Magnetic Field as a Model of Gamma-Ray Bursts
Yosuke Mizuno, Shoichi Yamada, Shinji Koide +1
We have performed 2.5-dimensional general relativistic magnetohydrodynamic (MHD) simulations of the gravitational collapse of a magnetized rotating massive star as a model of gamma…
Density field in extended Lagrangian perturbation theory
Takayuki Tatekawa
We analyzed the performance of a perturbation theory for nonlinear cosmological dynamics, based on the Lagrangian description of hydrodynamics. In our previous paper, we solved hyd…
General Relativistic Magnetohydrodynamic Simulations of Collapsars
Yosuke Mizuno, Shoichi Yamada, Shinji Koide +1
We have performed 2.5-dimensional general relativistic magnetohydrodynamic (MHD) simulations of the gravitational collapse of a magnetized rotating massive star as a model of gamma…
The relation between the two-point and the three-point correlation functions in the non-linear gravitational clustering regime
Hiroko Koyama, Taihei Yano
The connection between the two-point and the three-point correlation functions in the non-linear gravitational clustering regime is studied. Under a scaling hypothesis, we find tha…
Time-variability of the fine-structure constant expected from the Oklo constraint and the QSO absorption lines
Yasunori Fujii
The data from the QSO absorption lines indicating a nonzero time-variability of the fine-structure constant has been re-analyzed on the basis of a "damped-oscillator" fit, as motiv…
Gravitational Radiation from Axisymmetric Rotational Core Collapse
Kei Kotake, Shoichi Yamada, Katsuhiko Sato
We have done a series of two-dimensional hydrodynamic simulations of the rotational collapse of a supernova core in axisymmetry. We have employed a realistic equation of state (EOS…