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Stochastic gravitational wave background search with KAGRA

Research Project

Project/Area Number 20H01899
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionNagoya University

Principal Investigator

Kuroyanagi Sachiko  名古屋大学, 理学研究科, 招へい教員 (60456639)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2022: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2021: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2020: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Keywords重力波 / データ解析 / 宇宙物理
Outline of Research at the Start

宇宙の歴史のごく初期に生成された可能性のある「背景重力波」は、未だに検出はされていないものの、宇宙の誕生やその後の進化の理解に、重要な情報をもたらす観測量として期待されている。本研究では、背景重力波のスペクトルの形状・非等方性・偏光の情報を取り出すためのデータ解析コードを開発し、日本の重力波望遠鏡KAGRAを含む国際的な重力波観測ネットワークによる背景重力波の検出とその起源の推定を行うための体制を整える。本研究が完成することで、近い将来、背景重力波が検出されたときに、その起源への示唆を速やかに与えることができ、光学観測では見ることのできなかった新しい宇宙史の解明に大きな前進をもたらす。

Outline of Final Research Achievements

In this study, we worked on establishing a data analysis framework for gravitational wave background. Initially, through theoretical research, we demonstrated that it is possible to identify the origin of background gravitational waves using features such as spectral shape, anisotropy, non-Gaussianity, and polarization. Additionally, using LIGO-Virgo-KAGRA O3 data, we have provided constraints on various early universe models. Furthermore, we developed data analysis codes specifically for non-Gaussian backgrounds and successfully improved computation speed using machine learning. Leveraging these experiences, we aim to contribute to O4 data analysis in the future. We also plan to enhance the accuracy of the non-Gaussian background analysis code developed in this study and create a tool usable for future analyses.

Academic Significance and Societal Importance of the Research Achievements

国際重力波検出器ネットワークに参加したばかりのKAGRAにとって、データ解析の体制を整えるのは急務である。本研究課題の成果により、KAGRAが世界的検出器ネットワークによる背景重力波探査に参加し、科学的成果を上げるための体制作りを推し進める役割を果たす。
一方、背景重力波は宇宙の起源を理解する上で、非常に興味深い観測対象である。本研究にて、背景重力波の特徴を取り出すデータ解析の体制を整えた上で、今後観測技術が向上することによって、初期宇宙からやってくる背景重力波を捉えることができれば、加速器実験では到底届かないような超高エネルギー物理を理解し、宇宙誕生の謎に迫ることができる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (36 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (14 results) (of which Int'l Joint Research: 12 results,  Peer Reviewed: 14 results,  Open Access: 2 results) Presentation (19 results) (of which Int'l Joint Research: 14 results,  Invited: 18 results)

  • [Int'l Joint Research] Instituto de Fisica Teorica(スペイン)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Instituto de Fisica Teorica(スペイン)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Tamkang University (Taiwan)(その他の国・地域)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Effects of orbital precession on hyperbolic encounters2024

    • Author(s)
      Caldarola Marienza、Kuroyanagi Sachiko、Nesseris Savvas、Garcia-Bellido Juan
    • Journal Title

      Physical Review D

      Volume: 109 Issue: 6 Pages: 064001-064001

    • DOI

      10.1103/physrevd.109.064001

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gravitational waves in the circular restricted three body problem2024

    • Author(s)
      Martin Barandiaran Mikel、Kuroyanagi Sachiko、Nesseris Savvas
    • Journal Title

      Classical and Quantum Gravity

      Volume: 41 Issue: 9 Pages: 095002-095002

    • DOI

      10.1088/1361-6382/ad36a7

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Constraints on Non-Gaussian primordial curvature perturbation from the LIGO-Virgo-KAGRA third observing run2024

    • Author(s)
      Ryoto Inui, Santiago Jaraba, Sachiko Kuroyanagi, Shuichiro Yokoyama
    • Journal Title

      IOP Science home Accessibility Help Journals Books Publishing Support Login Journal of Cosmology and Astroparticle Physics

      Volume: 05 Issue: 05 Pages: 082-082

    • DOI

      10.1088/1475-7516/2024/05/082

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Stochastic gravitational wave background constraints from Gaia DR3 astrometry2023

    • Author(s)
      Jaraba Santiago、Garcia-Bellido Juan、Kuroyanagi Sachiko、Ferraiuolo Sarah、Braglia Matteo
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 524 Issue: 3 Pages: 3609-3622

    • DOI

      10.1093/mnras/stad2141

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Log-periodic gravitational-wave background beyond Einstein gravity2023

    • Author(s)
      Calcagni Gianluca、Kuroyanagi Sachiko
    • Journal Title

      Classical and Quantum Gravity

      Volume: 41 Issue: 1 Pages: 015031-015031

    • DOI

      10.1088/1361-6382/ad1123

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tracking the origin of black holes with the stochastic gravitational wave background popcorn signal2023

    • Author(s)
      Braglia Matteo、Garc?a-Bellido Juan、Kuroyanagi Sachiko
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 519 Issue: 4 Pages: 6008-6019

    • DOI

      10.1093/mnras/stad082

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Deep learning for intermittent gravitational wave signals2023

    • Author(s)
      Yamamoto Takahiro S.、Kuroyanagi Sachiko、Liu Guo-Chin
    • Journal Title

      Physical Review D

      Volume: 107 Issue: 4 Pages: 044032-044032

    • DOI

      10.1103/physrevd.107.044032

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gravitational wave matched filtering by quantum Monte Carlo integration and quantum amplitude amplification2022

    • Author(s)
      Koichi Miyamoto, Gonzalo Morras, Takahiro S. Yamamoto, Sachiko Kuroyanagi, Savvas Nesseris
    • Journal Title

      Physical Review Research

      Volume: 4 Issue: 3 Pages: 033150-033150

    • DOI

      10.1103/physrevresearch.4.033150

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Probing prerecombination physics by the cross-correlation of stochastic gravitational waves and CMB anisotropies2021

    • Author(s)
      Braglia Matteo、Kuroyanagi Sachiko
    • Journal Title

      Physical Review D

      Volume: 104 Issue: 12 Pages: 123547-123547

    • DOI

      10.1103/physrevd.104.123547

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Stochastic gravitational-wave background in quantum gravity2021

    • Author(s)
      Calcagni Gianluca、Kuroyanagi Sachiko
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2021 Issue: 03 Pages: 019-019

    • DOI

      10.1088/1475-7516/2021/03/019

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Blue-tilted inflationary tensor spectrum and reheating in the light of NANOGrav results2021

    • Author(s)
      Kuroyanagi Sachiko、Takahashi Tomo、Yokoyama Shuichiro
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2021 Issue: 01 Pages: 071-071

    • DOI

      10.1088/1475-7516/2021/01/071

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Searching for gravitational-wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array2020

    • Author(s)
      Yonemaru N、Kuroyanagi S、Hobbs G、Takahashi K、Zhu X-J、Coles W A、Dai S、Howard E、Manchester R、Reardon D、Russell C、M?Shannon R、Thyagarajan N、Spiewak R、Wang J-B
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 501 Issue: 1 Pages: 701-712

    • DOI

      10.1093/mnras/staa3721

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Optimization of quantum noise by completing the square of multiple interferometer outputs in quantum locking for gravitational wave detectors2020

    • Author(s)
      Yamada Rika、Enomoto Yutaro、Nishizawa Atsushi、Nagano Koji、Kuroyanagi Sachiko、Kokeyama Keiko、Komori Kentaro、Michimura Yuta、Naito Takeo、Watanabe Izumi、Morimoto Taigen、Ando Masaki、Furusawa Akira、Kawamura Seiji
    • Journal Title

      Physics Letters A

      Volume: 384 Issue: 26 Pages: 126626-126626

    • DOI

      10.1016/j.physleta.2020.126626

    • NAID

      120006948915

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gravitational wave spectrum from kinks on infinite cosmic strings with Y-junctions2020

    • Author(s)
      Matsui Yuka、Horiguchi Koichiro、Nitta Daisuke、Kuroyanagi Sachiko
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2020 Issue: 11 Pages: 039-039

    • DOI

      10.1088/1475-7516/2020/11/039

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Observational constraints on primordial physics through the stochastic gravitational wave background2023

    • Author(s)
      黒柳幸子
    • Organizer
      YITP International Molecule-type Workshop “Revisiting cosmological non-linearities in the era of precision surveys”
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Searching log-periodic oscillations in the stochastic gravitational wave background2023

    • Author(s)
      黒柳幸子
    • Organizer
      APCTP Focus research program: Black Hole and Gravitational Waves: from modified theories of gravity to data analyses
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Gravitational waves from cosmic strings2023

    • Author(s)
      黒柳幸子
    • Organizer
      Gravitational Wave Probes of Physics Beyond the Standard Model
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Searching for planetary-mass primordial black holes2023

    • Author(s)
      黒柳幸子
    • Organizer
      Focus Week on Primordial Black Holes
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 重力波観測の現状と展望2023

    • Author(s)
      黒柳幸子
    • Organizer
      第36回 理論懇シンポジウム 「高赤方偏移のフロンティア」
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Tracking the origin of black holes with the stochastic gravitational wave background popcorn signal2022

    • Author(s)
      黒柳幸子
    • Organizer
      12th Iberian Gravitational Waves Meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Tracking the origin of black holes with the stochastic gravitational wave background popcorn signal2022

    • Author(s)
      黒柳幸子
    • Organizer
      Non-linear aspects of cosmological gravitational waves
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Early universe cosmology with the stochastic gravitational wave background2022

    • Author(s)
      黒柳幸子
    • Organizer
      The Dark Side of the Universe (DSU2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Tracking the origin of black holes with the stochastic gravitational wave background popcorn signal2022

    • Author(s)
      黒柳幸子
    • Organizer
      Messengers of the Early Universe: Gravitational Waves and Primordial Black Holes
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 背景重力波: 最近の動向と今後の展望2022

    • Author(s)
      黒柳幸子
    • Organizer
      第21回 DECIGOワークショップ
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 重力波宇宙論の展望2022

    • Author(s)
      黒柳幸子
    • Organizer
      日本物理学会 第77回年次大会 宇宙線・宇宙物理領域、素粒子論領域 一般シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Proving the Early Universe with gravitational waves2021

    • Author(s)
      黒柳幸子
    • Organizer
      第10回観測的宇宙論ワークショップ
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Stochastic gravitational wave background in quantum gravity2021

    • Author(s)
      黒柳幸子
    • Organizer
      SUSY 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Searching for gravitational wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array2021

    • Author(s)
      黒柳幸子
    • Organizer
      Gravitational Wave Probes of Physics Beyond Standard Model
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Primordial gravitational waves with a blue-tilted spectrum2020

    • Author(s)
      黒柳幸子
    • Organizer
      Progress on Old and New Themes in cosmology (PONT) 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Gravitational waves from non-local Starobinsky inflation2020

    • Author(s)
      黒柳幸子
    • Organizer
      7th Korea-Japan Workshop on Dark Energy
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 重力波宇宙論の展望2020

    • Author(s)
      黒柳幸子
    • Organizer
      PPP2020
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Search for a stochastic gravitational wave background with LISA2020

    • Author(s)
      黒柳幸子
    • Organizer
      The 13th International LISA Symposium
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Searching for gravitational wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array2020

    • Author(s)
      黒柳幸子
    • Organizer
      Spring workshop on gravity and cosmology(
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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