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Five-dimensional Black Hole and Particle Solution with Non-Abelian Gauge Field
Naoya Okuyama, Kei-ichi Maeda
We study the 5-dimensional Einstein-Yang-Mills system with a cosmological constant. Assuming a spherically symmetric spacetime, we find a new analytic black hole solution, which ap…
Hypernovae and their Nucleosynthesis
Ken'ichi Nomoto, Keiichi Maeda, Hideyuki Umeda +3
We review the characteristics of nucleosynthesis in 'Hypernovae', i.e., core-collapse supernovae with very large explosion energies ($ \gsim 10^{52} $ ergs). The hypernova yields s…
Carbon Monoxide in the Type Ic SN 2000ew
Christopher L. Gerardy, Robert A. Fesen, Ken'ichi Nomoto +3
We present K-band (1.9 -- 2.5 micron) spectra of the Type Ic SN 2000ew observed with IRCS on the Subaru Telescope. These data show the first detection of carbon monoxide (CO) emiss…
Dynamics of Scalar field in a Brane World
Shuntaro Mizuno, Kei-ichi Maeda, Kohta Yamamoto
We study the dynamics of a scalar field in the brane cosmology. We assume that a scalar field is confined in our 4-dimensional world. As for the potential of the scalar field, we d…
Perturbation theory in Lagrangian hydrodynamics for a cosmological fluid with velocity dispersion
Takayuki Tatekawa, Momoko Suda, Kei-ichi Maeda +2
We extensively develop a perturbation theory for nonlinear cosmological dynamics, based on the Lagrangian description of hydrodynamics. We solve hydrodynamic equations for a self-g…
Uniqueness of Self-Similar Asymptotically Friedmann-Robertson-Walker Spacetime in Brans-Dicke theory
Hideki Maeda, Jun-ichirou Koga, Kei-ichi Maeda
We investigate spherically symmetric self-similar solutions in Brans-Dicke theory. Assuming a perfect fluid with the equation of state , we show that there are…