研究者氏名	石山智明

URL	http://hpc.imit.chiba-u.jp/~ishiymtm/
所属	千葉大学
部署	情報戦略機構データサービス部門
職名	准教授
学位	博士（学術）(東京大学)
J-Global ID	201901011083613189

経歴

2023年4月

現在

千葉大学情報戦略機構准教授

2015年3月

2023年3月

千葉大学統合情報センター (現情報戦略機構) 准教授

2011年5月

2015年2月

筑波大学計算科学研究センター研究員

受賞

2022年11月

千葉大学先進学術賞
石山智明

2022年4月

Netexplo innovation award 2022
Tomoaki Ishiyama

2014年6月

筑波大学若手教員特別奨励賞
石山智明

2014年5月

平成26年度科学技術分野の文部科学大臣表彰
石山智明

2012年11月

Gordon Bell Prize
石山智明

論文

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Acceleration of the tree method with SIMD instruction set

Tetsushi Kodama Tomoaki Ishiyama

Publications of the Astronomical Society of Japan 71(2) 2019年4月 [査読有り]

We have developed a highly-tuned software library that accelerates the 
calculation of quadrupole terms in the Barnes-Hut tree code by use of a SIMD 
instruction set on the x86 architecture, Advanced Vector eXtensions 2 (AVX2). 
Our...

Halo Substructure Boosts to the Signatures of Dark Matter Annihilation

Shin'ichiro Ando Tomoaki Ishiyama Nagisa Hiroshima

Galaxies 7, 68 (2019) 2019年3月 [査読有り][招待有り]

The presence of dark matter substructure will boost the signatures of dark 
matter annihilation. We review recent progress on estimates of this subhalo 
boost factor---a ratio of the luminosity from annihilation in the subhalos to 
...

Statistical properties of substructures around Milky Way-sized haloes and their implications for the formation of stellar streams

Yu Morinaga Tomoaki Ishiyama Takanobu Kirihara Kazuki Kinjo

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 487(2) 2718-2729 2019年1月 [査読有り]

Stellar streams originating in disrupted dwarf galaxies and star clusters are 
observed around the Milky Way and nearby galaxies. Such substructures are the 
important tracers that record how the host haloes have accreted progenitor<br /...

Modeling evolution of dark matter substructure and annihilation boost

Nagisa Hiroshima Shin'ichiro Ando Tomoaki Ishiyama

Phys. Rev. D 97, 123002 (2018) 97(12) 2018年3月 [査読有り]

We study evolution of dark matter substructures, especially how they lose the 
mass and change density profile after they fall in gravitational potential of 
larger host halos. We develop an analytical prescription that models the 
...

The New Numerical Galaxy Catalogue (ν^2 GC): Properties of Active Galactic Nuclei and Their Host Galaxies

Hikari Shirakata Takashi Okamoto Toshihiro Kawaguchi Masahiro Nagashima Tomoaki Ishiyama Ryu Makiya Masakazu A R. Kobayashi Motohiro Enoki Taira Oogi Katsuya Okoshi

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 482(4) 4846-4873 2018年2月 [査読有り]

We present the latest results of a semi-analytic model of galaxy formation, 
"New Numerical Galaxy Catalogue", which is combined with large cosmological 
N-body simulations. This model can reproduce statistical properties of ga...