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16 papers · 2 filters
Effects of rotation on the revival of a stalled shock in supernova explosions
T. Yamasaki, S. Yamada
In order to infer the effects of rotation on the revival of a stalled shock in supernova explosions, we investigated steady accretion flows with a standing shock. We first obtained…
Generalised cosmological scaling solutions
Edmund J. Copeland, Seung-Joo Lee, James E. Lidsey +1
Motivated by the recent interest in cosmologies arising from energy density modifications to the Friedmann equation, we analyse the scaling behaviour for a broad class of these cos…
Correspondence between the adhesion model and the velocity dispersion for the cosmological fluid
Takayuki Tatekawa
Basing our discussion on the Lagrangian description of hydrodynamics, we studied the evolution of density fluctuation for nonlinear cosmological dynamics. Adhesion approximation (A…
North-South Neutrino Heating Asymmetry in Strongly Magnetized and Rotating Stellar Cores
Kei Kotake, Shoichi Yamada, Katsuhiko Sato
We perform a series of two-dimensional magnetohydrodynamic simulations of supernova cores. Since the distributions of the angular momentum and the magnetic fields of strongly magne…
A Chandra Deep X-ray Exposure on the Galactic Plane and Near Infrared Identification
K. Ebisawa, A. Paizis, T. J. -L. Couvoisier +13
Using the Chandra ACIS-I instruments, we have carried out a deep X-ray observation on the Galactic plane region at (l,b) ~ (28.5, 0.0), where no discrete X-ray sources have been kn…
Universal Non-Gaussian Velocity Distribution in Violent Gravitational Processes
O. Iguchi, Y. Sota, T. Tatekawa +2
We study the velocity distribution in spherical collapses and cluster-pair collisions by use of N-body simulations. Reflecting the violent gravitational processes, the velocity dis…