273 citations · 2k across the 64 of their papers we have counts for
6 papers · 1 filter
The GC Simulations : Quantifying the Dark Side of the Universe in the Planck Cosmology
Tomoaki Ishiyama, Motohiro Enoki, Masakazu A. R. Kobayashi +3
We present the evolution of dark matter halos in six large cosmological N-body simulations, called the GC (New Numerical Galaxy Catalog) simulations on the basis of the LCDM c…
The Impact of Dust in Host Galaxies on Quasar Luminosity Functions
Hikari Shirakata, Takashi Okamoto, Motohiro Enoki +4
We have investigated effects of dust attenuation on quasar luminosity functions using a semi-analytic galaxy formation model combined with a large cosmological N-body simulation. W…
24.77 Pflops on a Gravitational Tree-Code to Simulate the Milky Way Galaxy with 18600 GPUs
Jeroen Bédorf, Evghenii Gaburov, Michiko S. Fujii +3
We have simulated, for the first time, the long term evolution of the Milky Way Galaxy using 51 billion particles on the Swiss Piz Daint supercomputer with our -body gravitation…
Anti-hierarchical evolution of the Active Galactic Nucleus space density in a hierarchical universe
Motohiro Enoki, Tomoaki Ishiyama, Masakazu A. R. Kobayashi +1
Recent observations show that the space density of luminous active galactic nuclei (AGNs) peaks at higher redshifts than that of faint AGNs. This downsizing trend in the AGN evolut…
Constraints on warm dark matter from weak lensing in anomalous quadruple lenses
Kaiki Taro Inoue, Ryuichi Takahashi, Tomo Takahashi +1
We investigate the weak lensing effect by line-of-sight structures with a surface mass density of <~10^8 solar mass/arcsec^2 in QSO-galaxy quadruple lens systems. Using high-resolu…
Hierarchical Formation of Dark Matter Halos and the Free Streaming Scale
Tomoaki Ishiyama
The smallest dark matter halos are formed first in the early universe. According to recent studies, the central density cusp is much steeper in these halos than in larger halos and…