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NISHIZAWA ATSUSHI  西澤 篤志

Researcher Number 90569378
Other IDs
  • ORCIDhttps://orcid.org/0000-0003-3562-0990
Affiliation (Current) 2025: 広島大学, 先進理工系科学研究科(理), 准教授
Affiliation (based on the past Project Information) *help 2023 – 2025: 広島大学, 先進理工系科学研究科(理), 准教授
2023: 広島大学, 大学院先進理工系科学研究科, 准教授
2019 – 2023: 東京大学, 大学院理学系研究科(理学部), 助教
2018: 名古屋大学, 基礎理論研究センター, 特任助教
Review Section/Research Field
Principal Investigator
Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics / Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics / Science and Engineering
Except Principal Investigator
Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields / Transformative Research Areas, Section (II) / Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Keywords
Principal Investigator
重力波 / 重力波観測 / 原始重力波 / インフレーション / 前景放射 / データ解析 / テレパラレル重力理論 / 観測的検証 / 一般時空幾何 / gravitational waves … More / dark energy / cosmic structure / cosmic expansion / metric affine gravity / 統計解析 / 重力理論の検証 / 相関統計解析 / 形成起源 / ブラックホール連星 … More
Except Principal Investigator
重力波 / データ解析 / 暗黒物質 / シミュレーション / ブラックホール / 重力理論 / スカラー場 / 宇宙物理学 / 修正重力 / 新粒子 / 宇宙物理 / 連星合体 / 超弦理論 / アクシオン Less
  • Research Projects

    (7 results)
  • Research Products

    (41 results)
  • Co-Researchers

    (14 People)
  •  Multimessenger astronomy with gravitational waves

    • Principal Investigator
      森崎 宗一郎
    • Project Period (FY)
      2023 – 2027
    • Research Category
      Grant-in-Aid for Transformative Research Areas (A)
    • Review Section
      Transformative Research Areas, Section (II)
    • Research Institution
      The University of Tokyo
  •  Searching for new scalar particles with gravitational waves.

    • Principal Investigator
      田中 貴浩
    • Project Period (FY)
      2023 – 2027
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Review Section
      Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields
    • Research Institution
      Kyoto University
  •  原始重力波観測へ向けた前景放射除去のための統計データ解析法の開発Principal Investigator

    • Principal Investigator
      西澤 篤志
    • Project Period (FY)
      2023 – 2026
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
    • Research Institution
      Hiroshima University
  •  Testing generalized space-time geometry with multimessenger observations of gravitation al wavesPrincipal Investigator

    • Principal Investigator
      カンノン キップ, 西澤 篤志
    • Project Period (FY)
      2022 – 2023
    • Research Category
      Grant-in-Aid for JSPS Fellows
    • Review Section
      Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
    • Research Institution
      The University of Tokyo
  •  重力波データ統計解析に基づく重力理論の検証Principal Investigator

    • Principal Investigator
      西澤 篤志
    • Project Period (FY)
      2020 – 2021
    • Research Category
      Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
    • Review Section
      Science and Engineering
    • Research Institution
      The University of Tokyo
  •  Deciphering string axiverse from multi-wavelength observations of gravitational waves

    • Principal Investigator
      Urakawa Yuko
    • Project Period (FY)
      2019 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
    • Research Institution
      High Energy Accelerator Research Organization
      Nagoya University
  •  多様な天体の相関統計解析で迫るブラックホール連星の起源Principal Investigator

    • Principal Investigator
      西澤 篤志
    • Project Period (FY)
      2018 – 2019
    • Research Category
      Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
    • Research Institution
      The University of Tokyo
      Nagoya University

All 2024 2023 2022 2021 2020 2019 2018

All Journal Article Presentation

  • [Journal Article] Distinguishing a stochastic gravitational-wave signal from correlated noise with joint parameter estimation: Fisher analysis for ground-based detectors2023

    • Author(s)
      Yoshiaki Himemoto, Atsushi Nishizawa, and Atsushi Taruya
    • Journal Title

      Physical Review D

      Volume: 107 Issue: 6 Pages: 064055-064055

    • DOI

      10.1103/physrevd.107.064055

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21K03580, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358, KAKENHI-PUBLICLY-20H04726, KAKENHI-PLANNED-20H05861, KAKENHI-PROJECT-23K20844
  • [Journal Article] First results of axion dark matter search with DANCE2023

    • Author(s)
      Yuka Oshima, Hiroki Fujimoto, Jun'ya Kume, Soichiro Morisaki, Koji Nagano, Tomohiro Fujita, Ippei Obata, Atsushi Nishizawa, Yuta Michimura, Masaki Ando
    • Journal Title

      Physical Review D

      Volume: 108 Issue: 7 Pages: 072005-072005

    • DOI

      10.1103/physrevd.108.072005

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K14702, KAKENHI-PROJECT-22KJ1040, KAKENHI-PROJECT-22KJ1071, KAKENHI-PROJECT-23K03408, KAKENHI-PROJECT-23K03424, KAKENHI-PROJECT-20H05639, KAKENHI-PLANNED-20H05854, KAKENHI-PROJECT-23H00110
  • [Journal Article] Circular Polarization of the Astrophysical Gravitational Wave Background2023

    • Author(s)
      Valbusa Dall’Armi L.、Nishizawa A.、Ricciardone A.、Matarrese S.
    • Journal Title

      Physical Review Letters

      Volume: 131 Issue: 4 Pages: 041401-041401

    • DOI

      10.1103/physrevlett.131.041401

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K03408, KAKENHI-PROJECT-23H00110
  • [Journal Article] Observational constraint on axion dark matter with gravitational waves2022

    • Author(s)
      Tsutsui Takuya、Nishizawa Atsushi
    • Journal Title

      Physical Review D

      Volume: 106 Issue: 8

    • DOI

      10.1103/physrevd.106.l081301

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21J12046, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358, KAKENHI-PUBLICLY-20H04726
  • [Journal Article] Search for scalar-tensor mixed polarization modes of gravitational waves2022

    • Author(s)
      Takeda Hiroki、Morisaki Soichiro、Nishizawa Atsushi
    • Journal Title

      Physical Review D

      Volume: 105 Issue: 8 Pages: 84019-84019

    • DOI

      10.1103/physrevd.105.084019

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-22K14037, KAKENHI-PROJECT-22KJ1650, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358, KAKENHI-PUBLICLY-20H04726
  • [Journal Article] Displacement-noise-free neutron interferometer for gravitational wave detection using a single Mach-Zehnder configuration2022

    • Author(s)
      Shoki Iwaguchi, Atsushi Nishizawa, Yanbei Chen, Yuki Kawasaki, Masaaki Kitaguchi, Taigen Morimoto, Tomohiro Ishikawa, Bin Wu, Izumi Watanabe, Ryuma Shimizu, Hirohiko Shimizu, Yuta Michimura, Seiji Kawamura
    • Journal Title

      Phys. Lett. A

      Volume: 441 Pages: 128150-128150

    • DOI

      10.1016/j.physleta.2022.128150

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K21875, KAKENHI-PLANNED-20H05854, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358, KAKENHI-PUBLICLY-20H04726, KAKENHI-PROJECT-20H05639
  • [Journal Article] Early warning of precessing neutron-star black-hole binary mergers with the near-future gravitational- wave detectors2022

    • Author(s)
      Takuya Tsutsui, Atsushi Nishizawa, Soichiro Morisaki
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 512 Issue: 3 Pages: 3878-3878

    • DOI

      10.1093/mnras/stac715

    • Peer Reviewed
    • Data Source
      KAKENHI-PUBLICLY-20H04726, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358
  • [Journal Article] Displacement-noise-free interferometeric gravitational-wave detector using unidirectional neutrons with four speeds2022

    • Author(s)
      Shoki Iwaguchi, Atsushi Nishizawa, Yanbei Chen, Yuki Kawasaki, Tomohiro Ishikawa, Masaaki Kitaguchi, Yutaka Yamagata, Bin Wu, Ryuma Shimizu, Kurumi Umemura, Kenji Tsuji, Hirohiko Shimizu, Yuta Michimura, Seiji Kawamura
    • Journal Title

      Phys. Lett. A

      Volume: 458 Pages: 128581-128581

    • DOI

      10.1016/j.physleta.2022.128581

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K21875, KAKENHI-PLANNED-20H05854, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358, KAKENHI-PUBLICLY-20H04726, KAKENHI-PROJECT-21H01092
  • [Journal Article] Neutron displacement noise-free interferometer for gravitational-wave detection2022

    • Author(s)
      Atsushi Nishizawa, Shoki Iwaguchi, Yanbei Chen, Taigen Morimoto, Tomohiro Ishikawa, Bin Wu, Izumi Watanabe, Yuki Kawasaki, Ryuma Shimizu, Hirohiko Shimizu, Masaaki Kitaguchi, Yuta Michimura, and Seiji Kawamura
    • Journal Title

      Phys. Rev. D

      Volume: 105 Issue: 12 Pages: 124017-124017

    • DOI

      10.1103/physrevd.105.124017

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K21875, KAKENHI-PLANNED-20H05854, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358, KAKENHI-PUBLICLY-20H04726, KAKENHI-PROJECT-20H05639
  • [Journal Article] Impacts of overlapping gravitational-wave signals on the parameter estimation: Toward the search for cosmological backgrounds2021

    • Author(s)
      Yoshiaki Himemoto, Atsushi Nishizawa, Atsushi Taruya
    • Journal Title

      Physical Review D

      Volume: 104 Issue: 4 Pages: 044010-044010

    • DOI

      10.1103/physrevd.104.044010

    • Peer Reviewed
    • Data Source
      KAKENHI-PUBLICLY-20H04726, KAKENHI-PROJECT-21K03580, KAKENHI-PLANNED-20H05861, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358, KAKENHI-PLANNED-17H06359, KAKENHI-PROJECT-23K20844
  • [Journal Article] Early warning of precessing compact binary merger with third-generation gravitational-wave detectors2021

    • Author(s)
      Takuya Tsutsui, Atsushi Nishizawa, Soichiro Morisaki
    • Journal Title

      Physical Review D

      Volume: 104 Issue: 6 Pages: 064013-064013

    • DOI

      10.1103/physrevd.104.064013

    • Peer Reviewed
    • Data Source
      KAKENHI-PUBLICLY-20H04726, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358
  • [Journal Article] Cosmological evolution of viable models in the generalized scalar-tensor theory2020

    • Author(s)
      Arai Shun、Karmakar Purnendu、Nishizawa Atsushi
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 2 Pages: 1-10

    • DOI

      10.1103/physrevd.102.024003

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H01894, KAKENHI-ORGANIZER-17H06357, KAKENHI-PLANNED-17H06358
  • [Presentation] 背景重力波探索によるアクシオン暗黒物質への観測的制限2024

    • Author(s)
      西澤篤志, Lorenzo Valbusa Dall'Armi, 筒井拓也
    • Organizer
      日本物理学会 2024 年春季大会
    • Data Source
      KAKENHI-PROJECT-23H00110
  • [Presentation] 背景重力波探索によるアクシオン暗黒物質への観測的制限2024

    • Author(s)
      西澤篤志, Lorenzo Valbusa Dall'Armi, 筒井拓也
    • Organizer
      日本物理学会 2024 年春季大会
    • Data Source
      KAKENHI-PROJECT-23K03408
  • [Presentation] 2030 年代の重力波プロジェクト2024

    • Author(s)
      西澤篤志
    • Organizer
      TMT 情報交換会
    • Invited
    • Data Source
      KAKENHI-PROJECT-23H00110
  • [Presentation] Observational constraints on axion dark matter from GW propagation2024

    • Author(s)
      A. Nishizawa
    • Organizer
      YITP long-term workshop: Gravity and Cosmology 2024
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K03408
  • [Presentation] 重力勾配雑音2024

    • Author(s)
      西澤篤志
    • Organizer
      素粒子・宇宙・重力と量子センシング 第1回「原子干渉計と重力波観測」
    • Data Source
      KAKENHI-PROJECT-23H00110
  • [Presentation] Observational constraints on axion dark matter from GW propagation2024

    • Author(s)
      A. Nishizawa
    • Organizer
      YITP long-term workshop: Gravity and Cosmology 2024
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23H00110
  • [Presentation] Stochastic gravitational wave background from axion dark matter2023

    • Author(s)
      A. Nishizawa
    • Organizer
      One-day workshop: “Search for new particles using gravitational waves (SNPGW)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23H00110
  • [Presentation] 重力波による重力理論検証の最前線2023

    • Author(s)
      西澤篤志
    • Organizer
      日本物理学会年次大会
    • Invited
    • Data Source
      KAKENHI-PROJECT-23H00110
  • [Presentation] When should we follow-up binary black-hole mergers?2023

    • Author(s)
      A. Nishizawa
    • Organizer
      Transformative Research Areas (A): The creation of multi-messenger astrophysics, The first Annual Area Symposium
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K03408
  • [Presentation] Observational constraint on axion dark matter with gravitational waves2023

    • Author(s)
      A. Nishizawa
    • Organizer
      Kickoff workshop: “Search for new particles using gravitational waves (SNPGW)”
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23H00110
  • [Presentation] When should we follow-up binary black-hole mergers?2023

    • Author(s)
      A. Nishizawa
    • Organizer
      Transformative Research Areas (A): The creation of multi-messenger astrophysics, The first Annual Area Symposium
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23H00110
  • [Presentation] Circular Polarizations of the Astrophysical Gravitational Wave Background2023

    • Author(s)
      A. Nishizawa
    • Organizer
      Black Hole and Gravitational Waves: from modified theories of gravity to data analyses
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K03408
  • [Presentation] 連星系からの重力波と非線形性2023

    • Author(s)
      西澤篤志
    • Organizer
      生物から宇宙までの非線形現象2
    • Data Source
      KAKENHI-PUBLICLY-20H04726
  • [Presentation] Stochastic gravitational wave background from axion dark matter2023

    • Author(s)
      A. Nishizawa
    • Organizer
      One-day workshop: “Search for new particles using gravitational waves (SNPGW)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K03408
  • [Presentation] Observational constraint on axion dark matter with gravitational waves2023

    • Author(s)
      A. Nishizawa
    • Organizer
      Kickoff workshop: “Search for new particles using gravitational waves (SNPGW)”
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K03408
  • [Presentation] Circular Polarizations of the Astrophysical Gravitational Wave Background2023

    • Author(s)
      A. Nishizawa
    • Organizer
      Black Hole and Gravitational Waves: from modified theories of gravity to data analyses
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23H00110
  • [Presentation] コンパクト連星合体からの重力波の重ね合わせが作る円偏極した前景放射2023

    • Author(s)
      西澤篤志
    • Organizer
      日本物理学会2023年春季大会
    • Data Source
      KAKENHI-PUBLICLY-20H04726
  • [Presentation] Distinguishing the modified generation and propagation of gravitational waves2022

    • Author(s)
      Atsushi Nishizawa
    • Organizer
      Symposium on Gravitational wave physics and astronomy: Genesis
    • Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-20H04726
  • [Presentation] 重力波観測で探る極限環境での重力2022

    • Author(s)
      西澤篤志
    • Organizer
      第 35 回理論懇シンポジウム
    • Invited
    • Data Source
      KAKENHI-PUBLICLY-20H04726
  • [Presentation] Observational tests of gravity with gravitational waves2022

    • Author(s)
      Atsushi Nishizawa
    • Organizer
      The 9th Korea-Japan Workshop on Dark Energy
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-20H04726
  • [Presentation] Impact of correlated noise on the parameter estimation of stochastic gravitational waves2022

    • Author(s)
      Atsushi Nishizawa
    • Organizer
      The 9th KAGRA International Workshop
    • Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-20H04726
  • [Presentation] Statistically separating the modified effects of GW generation and propagation2022

    • Author(s)
      Atsushi Nishizawa
    • Organizer
      GR23
    • Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-20H04726
  • [Presentation] 重力波の生成と伝播における修正重力効果の統計的識別2022

    • Author(s)
      西澤篤志
    • Organizer
      日本物理学会2022年秋季大会
    • Data Source
      KAKENHI-PUBLICLY-20H04726
  • [Presentation] Gravitational-wave polarization test in the strong gravity regime2022

    • Author(s)
      A. Nishizawa
    • Organizer
      Innovative Area Gravitational Wave Physics and Astronomy: Genesis, Group-A Winter Camp
    • Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-20H04726
  • [Presentation] Cross-correlating the angular distributions of binary black holes and electromagnetic counterparts2020

    • Author(s)
      Atsushi Nishizawa
    • Organizer
      Innovative Area Gravitational Wave Physics and Astronomy: Genesis, The Third Annual Area Symposium
    • Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-18H04581
  • [Presentation] ブラックホール連星からの重力波と高エネルギー天体現象との全天相関解析2019

    • Author(s)
      西澤篤志
    • Organizer
      日本物理学会秋季大会
    • Data Source
      KAKENHI-PUBLICLY-18H04581
  • [Presentation] All-sky distribution of stellar-mass binary BH mergers2019

    • Author(s)
      Atsushi Nishizawa
    • Organizer
      RESCEU summer school
    • Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-18H04581
  • [Presentation] Identifying the host-galaxies of binary black holes with multi-messenger observations2019

    • Author(s)
      Atsushi Nishizawa
    • Organizer
      the Yukawa International Seminar (YKIS) 2019 "Black Holes and Neutron Stars with Gravitational Waves"
    • Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-18H04581
  • [Presentation] Statistically identifying the host-galaxy properties of stellar-mass BBH2018

    • Author(s)
      Atsushi Nishizawa
    • Organizer
      The second annual symposium of the innovative area "Gravitational Wave Physics and Astronomy: Genesis"
    • Int'l Joint Research
    • Data Source
      KAKENHI-PUBLICLY-18H04581
  • 1.  カンノン キップ (50777886)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 0 results
  • 2.  Urakawa Yuko (80580555)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 3.  北嶋 直弥 (50737955)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 4.  森崎 宗一郎 (60970720)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 5.  田越 秀行 (30311765)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 6.  衣川 智弥 (90779159)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 7.  田中 貴浩 (40281117)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 8.  平松 尚志 (50456175)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 9.  黒柳 幸子 (60456639)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 10.  KARMAKAR PURNENDU
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 11.  武田 紘樹
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 12.  姫本 宣朗
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 13.  川村 静児
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 3 results
  • 14.  小幡 一平
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results

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