Division of Astrophysics

Name Faculty Position
OHSUGA Ken Professor/Chief
YAJIMA Hidenobu Professor
MORI Masao Associate Professor
YOSHIKAWA Kohji Associate Professor
FUKUSHIMA Hajime Assistant Professor
SOGA Kenta Researcher
Huang Jiahui Researcher
HORIE Shu Researcher
ASAHINA Yuta Researcher
HU Haojie Researcher (JSPS Postdoctoral Fellowship for Overseas Researchers)
氏名 大須賀 健
Name OHSUGA Ken
Faculty
Section
Position Professor/Chief
Theme Theoretical Astrophysics. Black-hole accretion disks and jets, formation of supermassive black holes
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TRIOS
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Email ohsugaccs.tsukuba.ac.jp
氏名 矢島 秀伸
Name YAJIMA Hidenobu
Faculty
Section
Position Professor
Theme Medical physics, Astrophysics, Light propagation in biological tissue, Galaxy formation, Cosmic reionization, Massive black holes
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TRIOS
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Email yajimaccs.tsukuba.ac.jp
氏名 森 正夫
Name MORI Masao
Faculty
Section
Position Associate Professor
Theme Theoretical astrophysics, galaxy formation, black-hole accretion flow, astrophysical numerical simulation
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Email mmoriccs.tsukuba.ac.jp
氏名 吉川 耕司
Name YOSHIKAWA Kohji
Faculty
Section
Position Associate Professor
Theme Astrophysics. Theoretical studies on observational cosmology, the formation of galaxies and galaxy clusters, and intergalactic medium
Related Links
TRIOS
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Email kohjiccs.tsukuba.ac.jp
  • Research Interests
  • Academic & Professional Experience
    Mar 2007
    -
    Present
    筑波大学
    Apr 2006
    -
    Feb 2007
    The University of Tokyo Graduate School of Science
    Apr 2003
    -
    Mar 2006
    The University of Tokyo Graduate School of Science
    Apr 2002
    -
    Mar 2003
    The University of Tokyo Graduate School of Science
  • Published Papers
    ▼▲
    AMD MI300A APUにおける共有メモリシステムの性能評価
    藤田, 典久, 吉川, 耕司, 辻, 美和子, 朴, 泰祐, 建部, 修見
    研究報告ハイパフォーマンスコンピューティング（HPC） 2025-HPC-203 (2) Mar 2026
    Large-Scale Vlasov Simulations for Astrophysics using Non-volatile Memory as Large Memory
    Fujita, Norihisa, Ito, Keita, Yoshikawa, Kohji, Hiraga, Kohei, Tatebe, Osamu, NUKADA, Akira, Boku, Taisuke
    SCA/HPCAsiaWS '26: Proceedings of the Supercomputing Asia and International Conference on High Performance Computing in Asia Pacific Region Workshops Jan 2026[Refereed]
    The First Star-by-star N-body/Hydrodynamics Simulation of Our Galaxy Coupling with a Surrogate Model
    HIRASHIMA, Keiya, FUJII, Michiko, SAITOH, Takayuki R., HARADA, Naoto, NOMURA, Kentaro, YOSHIKAWA, Kohji, HIRAI, Yutaka, ASANO, Tetsuro, MORIWAKI, Kana, IWASAWA, Masaki, OKAMOTO, Takashi, MAKINO, Junichiro
    Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis Nov 2025[Refereed]
    不揮発性メモリを用いたVlasovシミュレーションの大規模化
    藤田, 典久, 伊藤, 圭汰, 吉川, 耕司, 額田, 彰, 朴, 泰祐
    情報処理学会研究報告 2025-HPC-201 (7) Sep 2025
    Quantum calculation for two-stream instability and advection test of Vlasov-Maxwell equations: numerical evaluation of Hamiltonian simulation
    Higuchi, Hayato, Pedersen, Juan William, Toyoizumi, Kiichiro, Yoshikawa, Kohji, Kiumi, Chusei, Yoshikawa, Akimasa
    JOURNAL OF PLASMA PHYSICS 91 (4) Aug 2025[Refereed]
    Exploration of the Physical Properties of Molecular Gas in a Galaxy with High-dimensional Statistical Analysis and Future Prospects to Astronomy
    竹内, 努, 矢田, 和善, 江頭, 健斗, 青嶋, 誠, 吉川, 耕司, 石井, 晶, 加納, 龍生, 施, 文, 曹, 愛奈, 馬, 海霞, 松井, 瀬奈, 中西, 康一郎, クレ, スチェータ, 河野, 孝太郎
    Proceedings of the Institute of Statistical Mathematics 72 (2) Dec 2024[Refereed]
    輻射輸送シミュレーションのためのFPGAとGPUによるスクラッチパッドメモリの効率と有効性の分析
    古川, 和輝, 山口, 佳樹, 横野, 智也, 吉川, 耕司, 藤田, 典久, 小林, 諒平, 安倍, 牧人, 朴, 泰祐, 梅村, 雅之
    IEICE-RECONF2023-6 123 (71) Jun 2023
    Accelerating Radiative Transfer Simulation on NVIDIA GPUs with OpenACC
    Kobayashi, Ryohei, Fujita, Norihisa, Yamaguchi, Yoshiki, Boku, Taisuke, Yoshikawa, Kohji, Abe, Makito, Umemura, Masayuki
    PDCAT 2022: Parallel and Distributed Computing, Applications and Technologies 13798 Apr 2023[Refereed]
    GPU–FPGA-accelerated Radiative Transfer Simulation with Inter-FPGA Communication
    Kobayashi, Ryohei, Fujita, Norihisa, Yamaguchi, Yoshiki, Boku, Taisuke, Yoshikawa, Kohji, Abe, Makito, Umemura, Masayuki
    HPC Asia '23: Proceedings of the International Conference on High Performance Computing in Asia-Pacific Region Feb 2023[Refereed]
    Super DIOS Project for Exploring "Dark Baryon"
    Sato, K, Yamasaki, N. Y, Ishida, M, Maeda, Y, Mitsuda, K, Ishisaki, Y, Fujita, Y, Ezoe, Y, Mitsuishi, I, Tawara, Y, Osato, K, Kawai, N, Matsushita, K, Nagai, D, Yoshikawa, K, Fujimoto, R, Tsuru, T. G, Ota, N, Yamada, S, Ichinohe, Y, Uchida, Y, Nakashima, Y
    JOURNAL OF LOW TEMPERATURE PHYSICS 209 (5-6:SI) Dec 2022
    GPU・FPGA複合型演算加速クラスタを用いた宇宙輻射輸送コードARGOTの多ノード並列化
    小林, 諒平, 藤田, 典久, 山口, 佳樹, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    研究報告ハイパフォーマンスコンピューティング（HPC） 2022-HPC-185 (1) Jul 2022
    GPUクラスタを用いた宇宙輻射輸送コードARGOTのOpenACC実装と性能評価
    小林, 諒平, 藤田, 典久, 山口, 佳樹, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    研究報告ハイパフォーマンスコンピューティング（HPC） 2022-HPC-183 (17) Mar 2022
    High Performance Gravitational N-body Simulations on Supercomputer Fugaku
    吉川, 耕司
    HPCAsia2022: International Conference on High Performance Computing in Asia-Pacific Region Jan 2022[Refereed]
    An Efficient RTL Buffering Scheme for an FPGA-Accelerated Simulation of Diffuse Radiative Transfer
    Furukawa, Kazuki, Yokono, Tomoya, Yamaguchi, Yoshiki, Yoshikawa, Kohji, Fujita, Norihisa, Kobayashi, Ryohei, Boku, Taisuke, Umemura, Masayuki
    2021 International Conference on Field-Programmable Technology (ICFPT) Dec 2021
    A 400 trillion-grid Vlasov simulation on Fugaku supercomputer: large-scale distribution of cosmic relic neutrinos in a six-dimensional phase space
    Yoshikawa, Kohji, 田中賢, 吉田直紀
    SC '21: Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis Nov 2021[Refereed]
    HBM-FPGA implementation of a large-scale radiative transfer simulation of diffuse photon and its subjects
    古川, 和輝, 横野, 智也, 山口, 佳樹, 吉川, 耕司, 藤田, 典久, 小林, 諒平, 朴, 泰祐, 梅村, 雅之
    Proceedings of Forum on Information Technology 1 Aug 2021
    Cosmological Vlasov-Poisson Simulations of Structure Formation with Relic Neutrinos: Nonlinear Clustering and the Neutrino Mass
    Yoshikawa, Kohji, Tanaka, Satoshi, Yoshida, Naoki, Saito, Shun
    ASTROPHYSICAL JOURNAL 904 (2) Dec 2020[Refereed]
    OpenCL-enabled Parallel Raytracing for Astrophysical Application on Multiple FPGAs with Optical Links
    Fujita, Norihisa, Kobayashi, Ryohei, Yamaguchi, Yoshiki, Boku, Taisuke, Yoshikawa, Kohji, Abe, Makito, Umemura, Masayuki
    2020 IEEE/ACM International Workshop on Heterogeneous High-performance Reconfigurable Computing (H2RC) Dec 2020[Refereed]
    Multi-Hybrid Accelerated Simulation by GPU and FPGA on Radiative Transfer Simulation in Astrophysics
    Kobayashi, Ryohei, Fujita, Norihisa, Yamaguchi, Yoshiki, Boku, Taisuke, Yoshikawa, Kohji, Abe, Makito, Umemura, Masayuki
    Journal of Information Processing 28 Dec 2020[Refereed]
    Multi-Hybrid Accelerated Simulation by GPU and FPGA on Radiative Transfer Simulation in Astrophysics
    Kobayashi, Ryohei, Fujita, Norihisa, Yamaguchi, Yoshiki, Boku, Taisuke, Yoshikawa, Kohji, Abe, Makito, Umemura, Masayuki
    IPSJ Transactions on Advanced Computing System 13 (3) Nov 2020[Refereed]
    FPGAに組み込まれたHBMの効率的な利用とその考察
    古川, 和輝, 横野, 智也, 山口, 佳樹, 吉川, 耕司, 藤田, 典久, 小林, 諒平, 朴, 泰祐, 梅村, 雅之
    電子情報通信学会技術研究報告 (信学技報) 120 (168) Sep 2020
    再結合光子の輻射輸送大規模計算に向けたHBM-FPGA実装への考察
    古川, 和輝, 横野, 智也, 山口, 佳樹, 吉川, 耕司, 藤田, 典久, 小林, 諒平, 朴, 泰祐, 梅村, 雅之
    情報科学技術フォーラム講演論文集 1 Sep 2020
    Accelerating Radiative Transfer Simulation with GPU-FPGA Cooperative Computation
    Kobayashi, Ryohei, Fujita, Norihisa, Yamaguchi, Yoshiki, Boku, Taisuke, Yoshikawa, Kohji, Abe, Makito, Umemura, Masayuki
    2020 IEEE 31st International Conference on Application-specific Systems, Architectures and Processors (ASAP) Jul 2020[Refereed]
    宇宙幅射輸送コードARGOTのOpenACCによるGPU実装
    小林, 諒平, 藤田, 典久, 山口, 佳樹, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    研究報告ハイパフォーマンスコンピューティング（HPC） 2020-HPC-175 (7) Jul 2020
    Stratix 10 FPGAを用いたray-tracing法による輻射輸送計算の高速化
    藤田, 典久, 小林, 諒平, 山口, 佳樹, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    研究報告ハイパフォーマンスコンピューティング（HPC） 2020-HPC-175 (8) Jul 2020
    Multi-hybrid Accelerated Computing with GPU and Reconfigurable System
    小林, 諒平, 藤田, 典久, 山口, 佳樹, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science / 日本計算工学会 編 25 Jun 2020
    Deeply cooled core of the Phoenix galaxy cluster imaged by ALMA with the Sunyaev–Zel’dovich effect
    Yoshikawa, Kohji, Kitayama, Tetsu, Shutaro, Ueda, Akahori, Takuya, Komatsu, Eiichiro, Kawabe, Ryohei, Kohno, Kotaro, Takakuwa, Shigehisa, Takizawa, Motokazu, Tsutsumi, Takahiro
    Publications of the Astronomical Society of Japan 72 (2) Apr 2020[Refereed]
    GPU・FPGA複合演算加速による宇宙輻射輸送コードARGOTの性能評価
    小林, 諒平, 藤田, 典久, 中道, 安祐未, 山口, 佳樹, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    研究報告ハイパフォーマンスコンピューティング（HPC） 2020-HPC-173 (8) Mar 2020
    OpenCL対応GPU・FPGAデバイス間連携機構による宇宙輻射輸送コードの演算加速
    小林, 諒平, 藤田, 典久, 中道, 安祐未, 山口, 佳樹, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    研究報告ハイパフォーマンスコンピューティング（HPC） 2019-HPC-172 (8) Dec 2019
    GPU・FPGA複合演算加速による輻射流体シミュレーションコードARGOTの実装
    中道, 安祐未, 藤田, 典久, 小林, 諒平, 朴, 泰祐, 吉川, 耕司, 梅村, 雅之
    研究報告ハイパフォーマンスコンピューティング（HPC） 2019-HPC-170 (22) Jul 2019
    宇宙輻射輸送コードにおけるOpenCLによるFPGA演算加速最適化
    朴, 泰祐, 藤田典久, 小林諒平, 山口, 佳樹, 吉川, 耕司, 安倍, 牧人, 梅村, 雅之
    情報処理学会論文誌コンピューティングシステム（ACS） 12 (3) Jul 2019[Refereed]
    高位設計と低位設計の違いとFPGA演算性能の関係について
    横野, 智也, 山口, 佳樹, 藤田, 典久, 小林, 諒平, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    情報処理学会第81回全国大会講演論文集 Mar 2019
    Phantom-GRAPE: A Fast Numerical Library to Perform N-body Calculations
    Yoshikawa, Kohji, Tanikawa, Ataru
    Research Notes of the AAS 2 Dec 2018
    A Cool Core Disturbed: Observational Evidence for the Coexistence of Subsonic Sloshing Gas and Stripped Shock-heated Gas around the Core of RX J1347.5–1145
    Ueda, Shutaro, Kitayama, Tetsu, Oguri, Masamune, Komatsu, Eiichiro, Akahori, Takuya, Iono, Daisuke, Izumi, Takuya, Kawabe, Ryohei, Kohno, Kotaro, Matsuo, Hiroshi, Ota, Naomi, Suto, Yasushi, Takakuwa, Shigehisa, Takizawa, Motokazu, Tsutsumi, Takahiro, Yoshikawa, Kohji
    The Astrophysical Journal 866 (1) Oct 2018[Refereed]
    FPGAによる宇宙輻射輸送シミュレーションの演算加速
    横野, 智也, 藤田, 典久, 山口, 佳樹, 大畠, 佑真, 小林, 諒平, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    IEICE-RECONF2018-25 118 (215) Sep 2018
    並列FPGAシステムにおけるOpenCLを用いた宇宙輻射輸送コードの演算加速
    藤田, 典久, 小林, 諒平, 山口, 佳樹, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    研究報告ハイパフォーマンスコンピューティング（HPC） 2018-HPC-165 (27) Jul 2018
    Accelerating Space Radiative Transfer on FPGA using OpenCL
    Boku, Taisuke, 藤田典久, 小林諒平, 佳樹, 山口, 大畠佑真, 耕司, 吉川, 阿部牧人, 雅之, 梅村
    Proc. of HEART2018 Jun 2018[Refereed]
    Accelerating Space Radiative Transfer on FPGA using OpenCL
    Fujita, Norihisa, Kobayashi, Ryohei, Yamaguchi, Yoshiki, Oobata, Yuma, Boku, Taisuke, Abe, Makito, Yoshikawa, Kohji, Umemura, Masayuki
    HEART 2018 Proceedings of the 9th International Symposium on Highly-Efficient Accelerators and Reconfigurable Technologies Article No. 6 Jun 2018[Refereed]
    Accelerating Space Radiative Transfer on FPGA using OpenCL
    Boku, Taisuke, Fujita, Norihisa, Kobayashi, Ryohei, Yamaguchi, Yoshiki, Yoshikawa, Kohji, Umemura, Masayuki, Oobata, Yuma, Abe, Makino
    Proc. of HEART2018 Jun 2018[Refereed]
    宇宙輻射輸送計算におけるHDL設計とOpenCL設計の比較
    横野, 智也, 藤田, 典久, 山口, 佳樹, 大畠, 佑真, 小林, 諒平, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    情報処理学会研究報告ハイパフォーマンスコンピューティング（HPC） 2018-HPC-163 (24) Feb 2018
    宇宙輻射輸送計算におけるHDL設計とOpenCL設計の比較
    朴, 泰祐, 横野智也, 山口佳樹, 大畠佑真, 小林, 吉川耕司, 安部牧人, 梅村雅之
    情報処理学会ハイパフォーマンスコンピューティング研究会研究報告 Feb 2018
    Multidimensional Vlasov-Poisson Simulations with High-order Monotonicity- and Positivity-preserving Schemes
    Satoshi Tanaka, Kohji Yoshikawa, Takashi Minoshima, Naoki Yoshida
    ASTROPHYSICAL JOURNAL 849 (1) Nov 2017[Refereed]
    Properties of the cosmological filament between two clusters: detection of a large-scale accretion shock by Suzaku
    Yoshikawa, Kohji, Akamatsu, H, Fujita, Y, Akahori, T, Ishisaki, Y, Hayashida, K, Hoshino, A, Mernier, F, Sato, K, Kaastra, J
    The X-ray Universe 2017 Oct 2017
    Properties of the cosmological filament between two clusters: A possible detection of a large-scale accretion shock by Suzaku
    H. Akamatsu, Y. Fujita, T. Akahori, Y. Ishisaki, K. Hayashida, A. Hoshino, F. Mernier, K. Yoshikawa, K. Sato, J. S. Kaastra
    ASTRONOMY & ASTROPHYSICS 606 Sep 2017[Refereed]
    OpenCLを用いたFPGAによる宇宙輻射輸送シミュレーションの演算加速
    藤田, 典久, 小林, 諒平, 山口, 佳樹, 大畠, 佑真, 朴, 泰祐, 吉川, 耕司, 安部, 牧人, 梅村, 雅之
    情報処理学会研究報告ハイパフォーマンスコンピューティング（HPC） 2017-HPC-161 (12) Sep 2017
    OpenCLを用いたFPGAによる宇宙輻射輸送シミュレーションの演算加速
    朴, 泰祐, 藤田典久, 小林, 大畠佑真, 吉川耕司, 安倍牧人, 梅村雅之
    情報処理学会ハイパフォーマンスコンピューティング研究会研究報告 Sep 2017
    The Sunyaev-Zel'dovich effect at 5 '': RX J1347.5-1145 imaged by ALMA
    Tetsu Kitayama, Shutaro Ueda, Shigehisa Takakuwa, Takahiro Tsutsumi, Eiichiro Komatsu, Takuya Akahori, Daisuke Iono, Takuma Izumi, Ryohei Kawabe, Kotaro Kohno, Hiroshi Matsuo, Naomi Ota, Yasushi Suto, Motozaku Takizawa, Kohji Yoshikawa
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 68 (5) Oct 2016[Refereed]
    A new ray-tracing scheme for 3D diffuse radiation transfer on highly parallel architectures
    Satoshi Tanaka, Kohji Yoshikawa, Takashi Okamoto, Kenji Hasegawa
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 67 (4) Aug 2015[Refereed]
    Phantom-GRAPE: Numerical software library to accelerate collisionless N-body simulation with SIMD instruction set on x86 architecture
    Ataru Tanikawa, Kohji Yoshikawa, Keigo Nitadori, Takashi Okamoto
    NEW ASTRONOMY 19 Feb 2013[Refereed]
    DIRECT INTEGRATION OF THE COLLISIONLESS BOLTZMANN EQUATION IN SIX-DIMENSIONAL PHASE SPACE: SELF-GRAVITATING SYSTEMS
    Kohji Yoshikawa, Naoki Yoshida, Masayuki Umemura
    ASTROPHYSICAL JOURNAL 762 (2) Jan 2013[Refereed]
    A high-resolution study of the X-ray emission and Sunyaev-Zel'dovich effect in the Bullet cluster (1E 0657-56)
    D. A. Prokhorov, E. T. Million, T. Akahori, M. Zemcov, A. Moraghan, S. Nagataki, K. Yoshikawa, S. Colafrancesco, T. D. Rawle, E. Egami
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 426 (3) Nov 2012[Refereed]
    Imaging Simulations of the Sunyaev-Zel'dovich Effect for ALMA
    Yamada, Kenkichi, Kitayama, Tetsu, Takakuwa, Shigehisa, Iono, Daisuke, Tsutsumi, Takahiro, Kohno, Kotaro, Takizawa, Motokazu, Yoshikawa, Kohji, Akahori, Takuya, Komatsu, Eiichiro, Suto, Yasushi, Matsuo, Hiroshi, Kawabe, Ryohei
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 64 (5) Oct 2012[Refereed]
    Imaging Simulations of the Sunyaev-Zel'dovich Effect for ALMA
    Yoshikawa,Kohji
    Publications of the Astronomical Society of Japan 64 (5) Oct 2012[Refereed]
    N-body simulation for self-gravitating collisional systems with a new SIMD instruction set extension to the x86 architecture, Advanced Vector eXtensions
    Ataru Tanikawa, Kohji Yoshikawa, Takashi Okamoto, Keigo Nitadori
    NEW ASTRONOMY 17 (2) Feb 2012[Refereed]
    Non-Equilibrium Ionization State and Two-Temperature Structure in the Bullet Cluster 1E 0657-56
    Akahori, Takuya, Yoshikawa, Kohji
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 64 (1) Jan 2012[Refereed]
    ARGOT: Accelerated radiative transfer on grids using oct-tree
    Okamoto, T, Yoshikawa, K, Umemura, M
    Monthly Notices of the Royal Astronomical Society 419 Jan 2012[Refereed]
    A high-frequency study of the Sunyaev-Zel'dovich effect morphology in galaxy clusters
    D. A. Prokhorov, S. Colafrancesco, T. Akahori, E. T. Million, S. Nagataki, K. Yoshikawa
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 416 (1) Sep 2011[Refereed]
    Unveiling the 3D temperature structure of galaxy clusters by means of the thermal Sunyaev-Zel'dovich effect
    D. A. Prokhorov, Y. Dubois, S. Nagataki, T. Akahori, K. Yoshikawa
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 415 (3) Aug 2011[Refereed]
    演算加速装置に基づく超並列クラスタHA-PACSによる大規模計算科学
    朴, 泰祐, 佐藤, 三久, 塙, 敏博, 児玉, 祐悦, 高橋, 大介, 建部, 修見, 多田野, 寛人, 藏増, 嘉伸, 吉川, 耕司, 庄司, 光男
    IPSJ SIG Notes 2011 (21) Jul 2011
    Can electron distribution functions be derived through the Sunyaev-Zel'dovich effect?
    D. A. Prokhorov, S. Colafrancesco, T. Akahori, K. Yoshikawa, S. Nagataki, K. -I. Seon
    ASTRONOMY & ASTROPHYSICS 529 May 2011[Refereed]
    Hydrodynamic Simulations of Merging Galaxy Clusters: Non-Equilibrium Ionization State and Two-Temperature Structure
    Takuya Akahori, Kohji Yoshikawa
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 62 (2) Apr 2010[Refereed]
    Modeling Nonlinear Evolution of Baryon Acoustic Oscillations: Convergence Regime of N-body Simulations and Analytic Models
    Takahiro Nishimichi, Akihito Shirata, Atsushi Taruya, Kazuhiro Yahata, Shun Saito, Yasushi Suto, Ryuichi Takahashi, Naoki Yoshida, Takahiko Matsubara, Naoshi Sugiyama, Issha Kayo, Yipeng Jing, Kohji Yoshikawa
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 61 (2) Apr 2009[Refereed]
    Suzaku broad-band spectroscopy of RX J1347.5-1145: constraints on the extremely hot gas and non-thermal emission
    Ota, N, Murase, K, Kitayama, T, Komatsu, E, Hattori, M, Matsuo, H, Oshima, T, Suto, Y, Yoshikawa, K
    ASTRONOMY & ASTROPHYSICS 491 (2) Nov 2008[Refereed]
    Suzaku broad-band spectroscopy of RX J1347.5-1145: Constraints on the extremely hot gas and non-thermal emission
    N. Ota, K. Murase, T. Kitayama, E. Komatsu, M. Hattori, H. Matsuo, T. Oshima, Y. Suto, K. Yoshikawa
    Astronomy and Astrophysics 491 (2) Nov 2008[Refereed]
    Non-Equilibrium Ionization State and Two-Temperature Structure in the Linked Region of Abell 399 and Abell 401
    Akahori, Takuya, Yoshikawa, Kohji
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 60 (4) Jan 2008[Refereed]
    Soft X-Ray Transmission Spectroscopy of a Warm/Hot Intergalactic Medium with XEUS
    Hajime, Kawahara, Kohji, Yoshikawa, Shin, Sasaki, Yasushi, Suto, Nobuyuki, Kawai, Kazuhisa, Mitsuda, Takaya, Ohashi, Noriko, Yamasaki
    Publications of the Astronomical Society of Japan 58 (4) Aug 2006[Refereed]
    Non-Equilibrium Ionization State of a Warm-Hot Intergalactic Medium
    Kohji, Yoshikawa, Shin, Sasaki
    Publications of the Astronomical Society of Japan 58 (4) Aug 2006[Refereed]
    Protoclusters in the ΛCDM Universe
    Tamon, Suwa, Asao, Habe, Kohji, Yoshikawa
    The Astrophysical Journal 646 (1) Jul 2006[Refereed]
    PPPM and TreePM Methods on GRAPE Systems for Cosmological N-Body Simulations
    Kohji, Yoshikawa, Toshiyuki, Fukushige
    Publications of the Astronomical Society of Japan 57 (6) Dec 2005[Refereed]
    Locating the Warm--Hot Intergalactic Medium in the Simulated Local UniverseLocating the Warm--Hot Intergalactic Medium in the Simulated Local Universe
    K., Yoshikawa, K., Dolag, Y., Suto, S., Sasaki, N.Y., Yamasaki, T., Ohashi, K., Mitsuda, Y., Tawara, R., Fujimoto, T., Furusho, A., Furuzawa, M., Ishida, Y., Ishisaki, Y., Takei
    Publications of the Astronomical Society of Japan 56 (6) Dec 2004[Refereed]
    Exploring Cluster Physics with High-Resolution Sunyaev--Zel'dovich Effect Images and X-Ray Data: The Case of the Most X-Ray-Luminous Galaxy Cluster RX J1347-1145
    T., Kitayama, E., Komatsu, N., Ota, T., Kuwabara, Y., Suto, K., Yoshikawa, M., Hattori, H., Matsuo
    Publications of the Astronomical Society of Japan17-2 56 (1) Jan 2003[Refereed]
    Angular Momentum Distribution of Hot Gas and Implications for Disk Galaxy Formation
    D.N.Chen, Y.P.Jing, Kohji, Yoshikawa
    The Astrophysical Journal 597 Jan 2003[Refereed]
    Detectability of the Warm/Hot Intergalactic Medium through Emission Lines of O VII and O VIII
    Kohji Yoshikawa, Noriko Y. Yamasaki, Yasushi Suto, Takaya Ohashi, Kazuhisa Mitsuda, Yuzuru Tawara, Akihiro Furuzawa
    Publications of the Astronomical Society of Japan 55 (5) 2003[Refereed]
    Spatial and Dynamical Biases in Velocity Statistics of Galaxies
    Kohji, Yoshikawa, Y.P. Jing, Gerhard B, ner
    The Astrophysical Journal 590 Jan 2003[Refereed]
    Cluster Morphology as a Test of Different Cosmological Models
    Tamon, Suwa, Asao, Habe, Kohji, Yoshikawa, Takashi, Okamoto
    The Astrophysical Journal 588 Jan 2003[Refereed]
    The Luminosity Function of IRAS Point Source Catalog Redshift Survey Galaxies
    Tsutomu, T. Takeuchi, Kohji, Yoshikawa, Takako, T. Ishii
    The Astrophysical Journal 587 Jan 2003[Refereed]
    Nonlinear Stochastic Biasing of Galaxies and Dark Halos in Cosmological Hydrodynamic Simulations
    Kohji, Yoshikawa, Atsushi, Taruya, Y.P., Jing, Yasushi, Suto
    The Astrophysical Journal 558 (2) Jan 2001[Refereed]
    Theoretical Models of Multi-Waveband QSO Luminosity Functions
    T.Hosokawa, S.Mineshige, T.Kawaguchi, K.Yoshikawa, M.Umemura, 吉川, 耕司
    Publications of the Astronomical Society of Japan 53 Jan 2001[Refereed]
    Nonlinear Stochastic Biasing of Galaxies and Dark Halos in Cosmological Hydrodynamic Simulations
    Kohji, Yoshikawa, Atsushi, Taruya, Y.P., Jing, Yasushi, Suto
    The Astrophysical Journal 558 Jan 2001[Refereed]
    Substructures Revealed by the Sunyaev-Zel'dovich Effect at 150 GHz in a High-Resolution Map of RX J1347-1145
    Eiichiro, Komatsu, Hiroshi, Matsuo, Tetsu, Kitayama, Makoto, Hattori, Ryohei, Kawabe, Kotaro, Kohno, Nario, Kuno, Yasushi, Suto, Sabine, Schindler, Kohji, Yoshikawa
    Publications of the Astronomical Society of Japan 53 (1) Jan 2001[Refereed]
    Impact of Future Submillimeter and Millimeter Large Facilities on the Studies of Galaxy Formation and Evolution
    Tsutomu, T. Takeuchi, Ryohei, Kawabe, Kotaro, Kohno, Koichiro, Nakanishi, Takako, T. Ishii, Hiroyuki, Hirashita, Kohji, Yoshikawa
    Publications of the Astronomical Society of the Pacific 113 Jan 2001[Refereed]
    Exploring Galaxy Evolution from Infrared Number Counts and Cosmic Infrared Background
    Tsutomu, T. Takeuchi, Takako, T. Ishii, Hiroyuki, Hirashita, Kohji, Yoshikawa, Hideo, Matsuhara, Kimiaki, Kawara, Haruyuki, Okuda
    Publications of the Astronomical Society of Japan 53 (1) Jan 2001[Refereed]
    Tests of Statistical Methods for Estimating Galaxy Luminosity Function and Applications to the Hubble Deep Field
    Tsutomu, T. Takeuchi, Kohji, Yoshikawa, Takako, T. Ishii
    The Astrophysical Journal Supplement Series 129 Jan 2000[Refereed]
    Cosmological Smoothed Particle Hydrodynamic Simulations with Four Million Particles: Statistical Properties of X-Ray Clusters in a Low-Density Universe
    Kohji, Yoshikawa, Y.P., Jing, Yasushi, Suto
    The Astrophysical Journal 535 Jan 2000[Refereed]
    Cosmological Implications of Galaxy Clusters in X-Ray, Millimeter, and Submillimeter Bands
    Yasushi, Suto, Tetsu, Kitayama, Eiichiro, Komatsu, Makoto, Hattori, Ryohei, Kawabe, Hiroshi, Matsuo, Sabine, Schindler, Kohji, Yoshikawa
    Advances in Space Research 25 (3-4) Jan 2000[Refereed]
    Submillimeter detection of the Sunyaev -- Zel'dovich effect toward the most luminous X-ray cluster at z=0.45
    Eiichiro, Komatsu, Tetsu, Kitayama, Yasushi, Suto, Makoto, Hattori, Ryohei, Kawabe, Hiroshi, Matsuo, Sabine, Schindler, Kohji, Yoshikawa
    The Astrophysical Journal 516 Jan 1999[Refereed]
    Reconstructing the Radial Profiles of Gas Density and Temperature in Clusters of Galaxies from High-Resolution X-Ray and Radio Observations
    Kohji, Yoshikawa, Yasushi, Suto
    The Astrophysical Journal 513 Jan 1999[Refereed]
    Hydrodynamical Simulation of Clusters of Galaxies in X-Ray, mm, and submm Bands: Determination of Peculiar Velocity and the Hubble Constant
    Kohji, Yoshikawa, Makoto, Itoh, Yasushi, Suto
    Publications of the Astronomical Society of Japan 50 (2) Jan 1998[Refereed]
  • Awards & Honors
  • Books etc
  • Research Grants & Projects
    ▼▲
    ポスト京で重点的に取り組むべき社会的・科学的課題に関するア プリケーション開発・研究開発
    科学技術試験研究委託事業・文部科学省研究開発局
    Research period: Sep 2015 - Mar 2020Representative: 青木慎也
    Vlasov simulations of cosmic neutrinos in the large-scale structure of the unvierse
    Grants-in-Aid for Scientific Research
    Research period: 2018 - 2019
    Numerical Simulations of Self-Gravitating Systems Through Collision less Boltzmann Equation on Six-Dimensional Phase Space
    Grants-in-Aid for Scientific Research
    Research period: 2009 - 2011Representative: YOSHIKAWA Kohji, UMEMURA Masayuki
    Theoretical studies on the evolution of the cosmic baryons
    Grants-in-Aid for Scientific Research
    Research period: 2007 - 2008Representative: YOSHIKAWA Kohji
    数値シミュレーションによる銀河団ガスの熱史と銀河団銀河形成史の研究
    特別研究員奨励費
    Research period: 2003 - 2005
    数値シミュレーションによる銀河団ガスの熱史と銀河団銀河形成史の研究
    特別研究員奨励費
    Research period: 2003 - 2005Representative: 吉川 耕司
    大規模数値シミュレーションによる銀河団の宇宙論的進化モデルの研究
    特別研究員奨励費
    Research period: 1999 - 2001Representative: 吉川 耕司
氏名 福島 肇
Name FUKUSHIMA Hajime
Faculty
Section
Position Assistant Professor
Theme Astrobiology, Astrophysics
Related Links
TRIOS
researchmap
Email fukushimaccs.tsukuba.ac.jp
氏名 曽我 健太
Name SOGA Kenta
Faculty
Section
Position Researcher
Theme Super massive black holes, Galaxy formation, Medical optics
Related Links
Email sogaccs.tsukuba.ac.jp
氏名 Huang Jiahui
Name Huang Jiahui
Faculty
Section
Position Researcher
Theme Black hole accretion disk; ULX bubble propagation; High energy astrophysics.
Related Links
Email huang.jiahui.gnu.tsukuba.ac.jp
氏名 堀江　秀
Name HORIE Shu
Faculty
Section
Position Researcher
Theme
Related Links
Email shorieccs.tsukuba.ac.jp
氏名 朝比奈 雄太
Name ASAHINA Yuta
Faculty
Section
Position Researcher
Theme Theoretical Astrophysics. Black-hole accretion disks and jets
Related Links
Email asahinytccs.tsukuba.ac.jp
氏名 HU Haojie
Name HU Haojie
Faculty
Section
Position Researcher (JSPS Postdoctoral Fellowship for Overseas Researchers)
Theme
Related Links
Email