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2022 Fiscal Year Annual Research Report

Inclusive study on gravitational-wave astrophysics

Research Project

Project/Area Number 20H05639
Research InstitutionThe University of Tokyo

Principal Investigator

横山 順一  東京大学, 大学院理学系研究科(理学部), 教授 (50212303)

Co-Investigator(Kenkyū-buntansha) カンノン キップ  東京大学, 大学院理学系研究科(理学部), 教授 (50777886)
仏坂 健太  東京大学, 大学院理学系研究科(理学部), 准教授 (50867033)
伊藤 洋介  大阪公立大学, 大学院理学研究科, 准教授 (60443983)
茂山 俊和  東京大学, 大学院理学系研究科(理学部), 教授 (70211951)
道村 唯太  東京大学, 大学院理学系研究科(理学部), 客員共同研究員 (80747006)
Project Period (FY) 2020-08-31 – 2025-03-31
Keywords重力波 / データ解析 / ブラックホール / 独立成分解析 / 原始ブラックホール
Outline of Annual Research Achievements

重力波検出器KAGRAのノイズ除去に関する研究については、引き続き独立成分解析の理論整備を行うとともに、O3GK観測時のKAGRA実データに線形独立成分解析を適用し、iKAGRAデータの解析時と同様、より感度の上がったO3GKにおいてもこの方法の有効性を示すことができた。またKAGRAーPEM(Physical Environmental Monitor)チームとの協力により、引き続き環境信号の取得に努めているが、その副産物としてトンガの大地震の影響をこれらのモニターで検出し、その結果を論文にまとめた。
重力波で発見されたブラックホールの起源に関する理論研究としては、パルサータイミングアレイによって有意な重力波背景放射が検出されたことを受け、研究の方針を変更しているところであるが、新たな方針の下でインフレーション宇宙論の高次量子効果の研究を行い、音速に対する制限の論文を刊行するとともに、原始ブラックホールに対する大きな制限が得られる見通しが立った。
重力波対応天体のマルチメッセンジャー宇宙物理学に関する研究としては、まず連星中性子星合体後のキロノバにおける近赤外線スペクトルにおけるランタノイド元素の痕跡がどのように現れるかを明らかにした。また、キロノバ放出物の動的挙動を理論的に考察し、観測との比較において理論を制限した。また、Spitzer衛星や高視野紫外線衛星によるキロノバ観測からどのような知見が得られるかを明らかにした。一方、マルチメッセンジャー宇宙物理学のもう一つの柱である超新星に関する研究については、相互作用駆動型超新星の完全な歴史を明らかにするコードを作成し、一般公開した。
これらの研究に加え、重力波データ解析の研究の応用としてKAGRAを用いた軽量ダークマター探索に取組み、有用な制限を得つつあるところである。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

LIGO-Virgo-KAGRA(LVK)による第四観測期の開始が大幅に遅れていること、それに対するKAGRAの準備も遅れていることが本研究計画の遂行に大きな影響を及ぼしているが、理論研究者及び解析研究者は当初計画を上回る成果を挙げており、外的要因に寄らない部分の研究は順調に進捗している。代表者横山はKAGRAの感度向上とLVKの世界協力の推進に一層の寄与をするため、KAGRA科学会議議長に就任し、本研究費の順調な発展を阻む外的要因の解決に努力しているところである。

Strategy for Future Research Activity

KAGRAの感度が一刻も早く上がり、LVKネットワークのもとでの真の共同観測が実現できるようてこ入れをする。

  • Research Products

    (49 results)

All 2024 2023 2022 Other

All Int'l Joint Research (6 results) Journal Article (34 results) (of which Int'l Joint Research: 15 results,  Peer Reviewed: 34 results,  Open Access: 4 results) Presentation (9 results) (of which Int'l Joint Research: 8 results,  Invited: 4 results)

  • [Int'l Joint Research] カリフォルニア工科大学/マサチューセッツ工科大学/ウィスコンシン州立大学(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      カリフォルニア工科大学/マサチューセッツ工科大学/ウィスコンシン州立大学
    • # of Other Institutions
      37
  • [Int'l Joint Research] ヨーロッパ重力研究所/ピサ大学/ローマ大学(イタリア)

    • Country Name
      ITALY
    • Counterpart Institution
      ヨーロッパ重力研究所/ピサ大学/ローマ大学
    • # of Other Institutions
      7
  • [Int'l Joint Research] 国立清華大学/国立中央大学/國立台湾大学(その他の国・地域)

    • Country Name
      その他の国・地域
    • Counterpart Institution
      国立清華大学/国立中央大学/國立台湾大学
  • [Int'l Joint Research] 北京師範大学/重慶大学/中国科学院大学(中国)

    • Country Name
      CHINA
    • Counterpart Institution
      北京師範大学/重慶大学/中国科学院大学
    • # of Other Institutions
      5
  • [Int'l Joint Research] 延世大学/KASI/KIST(韓国)

    • Country Name
      KOREA (REP. OF KOREA)
    • Counterpart Institution
      延世大学/KASI/KIST
    • # of Other Institutions
      3
  • [Int'l Joint Research]

    • # of Other Countries
      25
  • [Journal Article] A Joint Fermi-GBM and Swift-BAT Analysis of Gravitational-wave Candidates from the Third Gravitational-wave Observing Run2024

    • Author(s)
      Fletcher C. et al LIGO-Virgo-KAGRA collaboration (J. Yokoyama, Y Itoh, Y. Michimura)
    • Journal Title

      The Astrophysical Journal

      Volume: 964 Pages: 149~149

    • DOI

      10.3847/1538-4357/ad1eed

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effects of mirror birefringence and its fluctuations to laser interferometric gravitational wave detectors2024

    • Author(s)
      Michimura Yuta、Wang Haoyu、Salces-Carcoba Francisco、Wipf Christopher、Brooks Aidan、Arai Koji、Adhikari Rana X.
    • Journal Title

      Physical Review D

      Volume: 109 Pages: 022009

    • DOI

      10.1103/physrevd.109.022009

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Overview of KAGRA : Data transfer and management2023

    • Author(s)
      T Akutsu et al KAGRA collaboration (J. Yokoyama, Y Itoh, Y. Michimura)
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2023 Pages: 10A102

    • DOI

      10.1093/ptep/ptad112

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of the global magnetic noise for the stochastic gravitational wave background search2023

    • Author(s)
      Washimi Tatsuki、Fukunaga Isamu、Itoh Yousuke、Kanda Nobuyuki、Nishizawa Atsushi、Yokoyama Jun'ichi、Yokozawa Takaaki
    • Journal Title

      Proceedings of Science ICRC 2023

      Volume: 2023 Pages: 1572

    • DOI

      10.22323/1.444.1561

    • Peer Reviewed
  • [Journal Article] Reheating process in the R2 inflationary model with the baryogenesis scenario2023

    • Author(s)
      Jeong Hyun、Kamada Kohei、Starobinsky Alexei A.、Yokoyama Jun'ichi
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2023 Pages: 023

    • DOI

      10.1088/1475-7516/2023/11/023

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Baryogenesis from sphaleron decoupling2023

    • Author(s)
      Hong Muzi、Kamada Kohei、Yokoyama Jun’ichi
    • Journal Title

      Physical Review D

      Volume: 108 Pages: 063502

    • DOI

      10.1103/PhysRevD.108.063502

    • Peer Reviewed
  • [Journal Article] Search for subsolar-mass black hole binaries in the second part of Advanced LIGO’s and Advanced Virgo’s third observing run2023

    • Author(s)
      The LVK Collaboration (J. Yokoyama, Y Itoh, Y. Michimura)
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 524 Pages: 5984~5992

    • DOI

      10.1093/mnras/stad588

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Generation of neutrino dark matter, baryon asymmetry, and radiation after quintessential inflation2023

    • Author(s)
      Fujikura Kohei、Hashiba Soichiro、Yokoyama Jun’ichi
    • Journal Title

      Physical Review D

      Volume: 107 Pages: 063537

    • DOI

      10.1103/PhysRevD.107.063537

    • Peer Reviewed
  • [Journal Article] Noise subtraction from KAGRA O3GK data using Independent Component Analysis2023

    • Author(s)
      H Abe et al KAGRA collaboration (J. Yokoyama, Y Itoh, Y. Michimura)
    • Journal Title

      Classical and Quantum Gravity

      Volume: 40 Pages: 085015

    • DOI

      10.1088/1361-6382/acc0cb

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gravitational Wave Signal for Quark Matter with Realistic Phase Transition2023

    • Author(s)
      Fujimoto Yuki、Fukushima Kenji、Hotokezaka Kenta、Kyutoku Koutarou
    • Journal Title

      Physical Review Letters

      Volume: 130 Pages: 091404

    • DOI

      10.1103/PhysRevLett.130.091404

    • Peer Reviewed
  • [Journal Article] The First JWST Spectrum of a GRB Afterglow: No Bright Supernova in Observations of the Brightest GRB of all Time, GRB 221009A2023

    • Author(s)
      Levan A. J. et al (K. Hotokezaka)
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 946 Pages: L28~

    • DOI

      10.3847/2041-8213/acc2c1

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Prospects of Gravitational-wave Follow-up through a Wide-field Ultraviolet Satellite: A Dorado Case Study2023

    • Author(s)
      Dorsman Bas、Raaijmakers Geert、Cenko S. Bradley、Nissanke Samaya、Singer Leo P.、Kasliwal Mansi M.、Piro Anthony L.、Bellm Eric C.、Hartmann Dieter H.、Hotokezaka Kenta、Luko?i?t? Kamil?
    • Journal Title

      The Astrophysical Journal

      Volume: 944 Pages: 126~126

    • DOI

      10.3847/1538-4357/acaa9e

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Stochastic effects on observation of ultralight bosonic dark matter2023

    • Author(s)
      Nakatsuka Hiromasa、Morisaki Soichiro、Fujita Tomohiro、Kume Jun’ya、Michimura Yuta、Nagano Koji、Obata Ippei
    • Journal Title

      Physical Review D

      Volume: 108 Pages: 092010

    • DOI

      10.1103/physrevd.108.092010

    • Peer Reviewed
  • [Journal Article] First results of axion dark matter search with DANCE2023

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

      Physical Review D

      Volume: 108 Pages: 072005

    • DOI

      10.1103/physrevd.108.072005

    • Peer Reviewed
  • [Journal Article] First-step experiment for sensitivity improvement of DECIGO: Sensitivity optimization for simulated quantum noise by completing the square2023

    • Author(s)
      Ishikawa Tomohiro、Kawasaki Yuki、Tsuji Kenji、Yamada Rika、Watanabe Izumi、Wu Bin、Iwaguchi Shoki、Shimizu Ryuma、Umemura Kurumi、Nagano Koji、Enomoto Yutaro、Komori Kentaro、Michimura Yuta、Furusawa Akira、Kawamura Seiji
    • Journal Title

      Physical Review D

      Volume: 107 Pages: 022007

    • DOI

      10.1103/physrevd.107.022007

    • Peer Reviewed
  • [Journal Article] Model-based Cross-correlation Search for Gravitational Waves from the Low-mass X-Ray Binary Scorpius X-1 in LIGO O3 Data2022

    • Author(s)
      Abbott R. et al LIGO-Virgo-KAGRA collaboration (J. Yokoyama, Y Itoh, Y. Michimura)
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 941 Pages: L30

    • DOI

      10.3847/2041-8213/aca1b0

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Response of the underground environment of the KAGRA observatory against the air pressure disturbance from the Tonga volcanic eruption on January 15, 20222022

    • Author(s)
      Washimi Tatsuki、Yokozawa Takaaki、Takamori Akiteru、Araya Akito、Hoshino Sota、Itoh Yousuke、Kobayashi Yuichiro、Kume Jun’ya、Miyo Kouseki、Ohkawa Masashi、Oshino Shoichi、Tomaru Takayuki、Yokoyama Jun’ichi、Yuzurihara Hirotaka
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2022 Pages: 113H02

    • DOI

      10.1093/ptep/ptac128

    • Peer Reviewed / Open Access
  • [Journal Article] Perturbative region on non-Gaussian parameter space in single-field inflation2022

    • Author(s)
      Kristiano Jason、Yokoyama Jun'ichi
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2022 Pages: 007

    • DOI

      10.1088/1475-7516/2022/07/007

    • Peer Reviewed
  • [Journal Article] Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data2022

    • Author(s)
      Abbott R. et al LIGO-Virgo-KAGRA collaboration (J. Yokoyama, Y Itoh, Y. Michimura)
    • Journal Title

      Physical Review D

      Volume: 106 Pages: 042003

    • DOI

      10.1103/PhysRevD.106.042003

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Self-similar Solution of Rotating Eruptive Outflows on Its Equatorial Plane2022

    • Author(s)
      Ko Takatoshi、Fujisawa Kotaro、Shigeyama Toshikazu
    • Journal Title

      The Astrophysical Journal

      Volume: 941 Pages: 38~

    • DOI

      10.3847/1538-4357/aca095

    • Peer Reviewed
  • [Journal Article] Potential Signature of Population III Pair-instability Supernova Ejecta in the BLR Gas of the Most Distant Quasar at z = 7.54*2022

    • Author(s)
      Yoshii Yuzuru、Sameshima Hiroaki、Tsujimoto Takuji、Shigeyama Toshikazu、Beers Timothy C.、Peterson Bruce A.
    • Journal Title

      The Astrophysical Journal

      Volume: 937 Pages: 61~

    • DOI

      10.3847/1538-4357/ac8163

    • Peer Reviewed
  • [Journal Article] Eruption of the Envelope of Massive Stars by Energy Injection with Finite Duration2022

    • Author(s)
      Ko Takatoshi、Tsuna Daichi、Takei Yuki、Shigeyama Toshikazu
    • Journal Title

      The Astrophysical Journal

      Volume: 930 Pages: 168~

    • DOI

      10.3847/1538-4357/ac67e1

    • Peer Reviewed
  • [Journal Article] CHIPS: Complete History of Interaction-powered Supernovae2022

    • Author(s)
      Takei Yuki、Tsuna Daichi、Kuriyama Naoto、Ko Takatoshi、Shigeyama Toshikazu
    • Journal Title

      The Astrophysical Journal

      Volume: 929 Pages: 177~

    • DOI

      10.3847/1538-4357/ac60fe

    • Peer Reviewed
  • [Journal Article] Training Process of Unsupervised Learning Architecture for Gravity Spy Dataset2022

    • Author(s)
      Sakai Yusuke、Itoh Yousuke、Jung Piljong、Kokeyama Keiko、Kozakai Chihiro、Nakahira Katsuko T.、Oshino Shoichi、Shikano Yutaka、Takahashi Hirotaka、Uchiyama Takashi、Ueshima Gen、Washimi Tatsuki、Yamamoto Takahiro、Yokozawa Takaaki
    • Journal Title

      Annalen der Physik

      Volume: 536 Pages: 2200140

    • DOI

      10.1002/andp.202200140

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Lanthanide Features in Near-infrared Spectra of Kilonovae2022

    • Author(s)
      Domoto Nanae、Tanaka Masaomi、Kato Daiji、Kawaguchi Kyohei、Hotokezaka Kenta、Wanajo Shinya
    • Journal Title

      The Astrophysical Journal

      Volume: 939 Pages: 8~8

    • DOI

      10.3847/1538-4357/ac8c36

    • Peer Reviewed
  • [Journal Article] GW170817 4.5 Yr After Merger: Dynamical Ejecta Afterglow Constraints2022

    • Author(s)
      Balasubramanian Arvind、Corsi Alessandra、Mooley Kunal P.、Hotokezaka Kenta、Kaplan David L.、Frail Dale A.、Hallinan Gregg、Lazzati Davide、Murphy Eric J.
    • Journal Title

      The Astrophysical Journal

      Volume: 938 Pages: 12~12

    • DOI

      10.3847/1538-4357/ac9133

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Tungsten versus Selenium as a potential source of kilonova nebular emission observed by Spitzer2022

    • Author(s)
      Hotokezaka Kenta、Tanaka Masaomi、Kato Daiji、Gaigalas Gediminas
    • Journal Title

      Monthly Notices of the Royal Astronomical Society: Letters

      Volume: 515 Pages: L89~L93

    • DOI

      10.1093/mnrasl/slac071

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Electromagnetic Counterparts of Binary-neutron-star Mergers Leading to a Strongly Magnetized Long-lived Remnant Neutron Star2022

    • Author(s)
      Kawaguchi Kyohei、Fujibayashi Sho、Hotokezaka Kenta、Shibata Masaru、Wanajo Shinya
    • Journal Title

      The Astrophysical Journal

      Volume: 933 Pages: 22~

    • DOI

      10.3847/1538-4357/ac6ef7

    • Peer Reviewed
  • [Journal Article] Conceptual design and science cases of a juggled interferometer for gravitational wave detection2022

    • Author(s)
      Wu Bin、Ishikawa Tomohiro、Iwaguchi Shoki、Shimizu Ryuma、Watanabe Izumi、Kawasaki Yuki、Michimura Yuta、Yokoyama Shuichiro、Kawamura Seiji
    • Journal Title

      Physical Review D

      Volume: 106 Pages: 042007

    • DOI

      10.1103/physrevd.106.042007

    • Peer Reviewed
  • [Journal Article] Angular trapping of a linear-cavity mirror with an optical torsional spring2022

    • Author(s)
      Kawasaki Takuya、Komori Kentaro、Fujimoto Hiroki、Michimura Yuta、Ando Masaki
    • Journal Title

      Physical Review A

      Volume: 106 Pages: 013514

    • DOI

      10.1103/physreva.106.013514

    • Peer Reviewed
  • [Journal Article] Neutron displacement noise-free interferometer for gravitational-wave detection2022

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

      Physical Review D

      Volume: 105 Pages: 124017

    • DOI

      10.1103/physrevd.105.124017

    • Peer Reviewed
  • [Journal Article] Displacement-noise-free neutron interferometer for gravitational wave detection using a single Mach-Zehnder configuration2022

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

      Physics Letters A

      Volume: 441 Pages: 128150

    • DOI

      10.1016/j.physleta.2022.128150

    • Peer Reviewed
  • [Journal Article] First joint observation by the underground gravitational-wave detector KAGRA with GEO 6002022

    • Author(s)
      Abbott et al LVK collaboration (J. Yokoyama, Y. Itoh, and Y. Michimura)
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2022 Pages: 063F01

    • DOI

      10.1093/ptep/ptac073

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On the Use of CHIME to Detect Long-duration Radio Transients from Neutron Star Mergers2022

    • Author(s)
      Shikauchi Minori、Cannon Kipp、Lin Haoxiang、Totani Tomonori、Shaw J. Richard
    • Journal Title

      The Astrophysical Journal

      Volume: 928 Pages: 72~72

    • DOI

      10.3847/1538-4357/ac540d

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Postscript 2019 or: How I learned to continue worrying and got involved in KAGRA2023

    • Author(s)
      Jun'ichi Yokoyama
    • Organizer
      Workshop on fundamental cosmology: From beginning to end"
  • [Presentation] Searches for geontropic fluctuations and axion dark matter with LIGO2023

    • Author(s)
      Yuta Michimura
    • Organizer
      Brainstorming new ideas for the km-scale facilities, Online
    • Int'l Joint Research
  • [Presentation] Laser interferometric searches for ultralight dark matter: Updates from B01 group2023

    • Author(s)
      Yuta Michimura
    • Organizer
      Transformative Research Area "Dark Matter" FY2022 Symposium, Kavli IPMU and Online
    • Int'l Joint Research
  • [Presentation] KAGRA toward O4 and beyond2022

    • Author(s)
      Jun'ichi Yokoyama
    • Organizer
      15th Asia Pacific Physics Conference
    • Int'l Joint Research / Invited
  • [Presentation] Status of KAGRA in September 20222022

    • Author(s)
      Jun'ichi Yokoyama
    • Organizer
      LVK meeting
    • Int'l Joint Research / Invited
  • [Presentation] Kilonova2022

    • Author(s)
      Kenta Hotokezaka
    • Organizer
      NBIA Workshop on Radiation Transfer in Astrophysics
    • Int'l Joint Research / Invited
  • [Presentation] Element Identification in Kilonova2022

    • Author(s)
      Kenta Hotokezaka
    • Organizer
      EM Counterparts to GW Sources
    • Int'l Joint Research
  • [Presentation] Open questions in neutron star mergers (kilonova & r-process)2022

    • Author(s)
      Kenta Hotokezaka
    • Organizer
      TCAN22 on binary neutron stars workshop
    • Int'l Joint Research / Invited
  • [Presentation] Updates on the Optical Levitation Experiment2022

    • Author(s)
      Yuta Michimura
    • Organizer
      The 4th QFilter Workshop, LMA and Online
    • Int'l Joint Research

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Published: 2024-12-25  

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