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Tomoaki Ishiyama
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The Uchuu simulations: Data Release 1 and dark matter halo concentrations
T Ishiyama, F Prada, AA Klypin, M Sinha, RB Metcalf, E Jullo, B Altieri, ...
Monthly Notices of the Royal Astronomical Society 506 (3), 4210-4231, 2021
1632021
4.45 Pflops astrophysical N-body simulation on K computer--The gravitational trillion-body problem
T Ishiyama, K Nitadori, J Makino
SC'12: Proceedings of the International Conference on High Performance …, 2012
126*2012
Hierarchical Formation of Dark Matter Halos and the Free Streaming Scale
T Ishiyama
The Astrophysical Journal 788 (1), 27, 2014
1242014
GreeM: massively parallel TreePM code for large cosmological N-body simulations
T Ishiyama, T Fukushige, J Makino
Publications of the Astronomical Society of Japan 61 (6), 1319-1330, 2009
1172009
The cosmogrid simulation: Statistical properties of small dark matter halos
T Ishiyama, S Rieder, J Makino, SP Zwart, D Groen, K Nitadori, C De Laat, ...
The Astrophysical Journal 767 (2), 146, 2013
1092013
24.77 Pflops on a gravitational tree-code to simulate the Milky Way Galaxy with 18600 GPUs
J Bédorf, E Gaburov, MS Fujii, K Nitadori, T Ishiyama, SP Zwart
SC'14: Proceedings of the International Conference for High Performance …, 2014
932014
Gamma-ray signal from Earth-mass dark matter microhalos
T Ishiyama, J Makino, T Ebisuzaki
The Astrophysical Journal Letters 723 (2), L195, 2010
922010
Where are the Low-mass Population III Stars?
T Ishiyama, K Sudo, S Yokoi, K Hasegawa, N Tominaga, H Susa
The Astrophysical Journal 826 (1), 9, 2016
892016
Modeling evolution of dark matter substructure and annihilation boost
N Hiroshima, S Ando, T Ishiyama
Physical Review D 97 (12), 123002, 2018
862018
The ν2GC simulations: Quantifying the dark side of the universe in the Planck cosmology
T Ishiyama, M Enoki, MAR Kobayashi, R Makiya, M Nagashima, T Oogi
Publications of the Astronomical Society of Japan 67 (4), 61, 2015
862015
SILVERRUSH. VI. A simulation of Lyα emitters in the reionization epoch and a comparison with Subaru Hyper Suprime-Cam survey early data
AK Inoue, K Hasegawa, T Ishiyama, H Yajima, I Shimizu, M Umemura, ...
Publications of the Astronomical Society of Japan 70 (3), 55, 2018
812018
Diversity of dark matter density profiles in the Galactic dwarf spheroidal satellites
K Hayashi, M Chiba, T Ishiyama
The Astrophysical Journal 904 (1), 45, 2020
692020
Halo substructure boosts to the signatures of dark matter annihilation
S Ando, T Ishiyama, N Hiroshima
Galaxies 7 (3), 68, 2019
582019
Variation of the subhalo abundance in dark matter halos
T Ishiyama, T Fukushige, J Makino
The Astrophysical Journal 696 (2), 2115, 2009
532009
Evolution of star clusters in a cosmological tidal field
S Rieder, T Ishiyama, P Langelaan, J Makino, SLW McMillan, ...
Monthly Notices of the Royal Astronomical Society 436 (4), 3695-3706, 2013
51*2013
Anti-hierarchical Evolution of the Active Galactic Nucleus Space Density in a Hierarchical Universe
M Enoki, T Ishiyama, MAR Kobayashi, M Nagashima
The Astrophysical Journal 794 (1), 69, 2014
452014
Constraints on warm dark matter from weak lensing in anomalous quadruple lenses
KT Inoue, R Takahashi, T Takahashi, T Ishiyama
Monthly Notices of the Royal Astronomical Society 448 (3), 2704-2716, 2015
442015
The abundance and structure of subhaloes near the free streaming scale and their impact on indirect dark matter searches
T Ishiyama, S Ando
Monthly Notices of the Royal Astronomical Society 492 (3), 3662-3671, 2020
392020
Simulating the universe on an intercontinental grid
SP Zwart, D Groen, T Ishiyama, K Nitadori, C de Laat, S McMillan, K Hiraki, ...
Computer 43 (8), 63-70, 2010
392010
The New Numerical Galaxy Catalog (ν2GC): An updated semi-analytic model of galaxy and active galactic nucleus formation with large cosmological N-body simulations
R Makiya, M Enoki, T Ishiyama, MAR Kobayashi, M Nagashima, ...
Publications of the Astronomical Society of Japan 68 (2), 25, 2016
372016
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