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Study of origins and propagation of very high energy cosmic rays with detailed measurements in the wide energy range

Research Project

Project/Area Number 19H05607
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Review Section Broad Section B
Research InstitutionThe University of Tokyo (2020-2023)
Osaka City University (2019)

Principal Investigator

Ogio Shoichi  東京大学, 宇宙線研究所, 教授 (20242258)

Co-Investigator(Kenkyū-buntansha) 竹田 成宏  東京大学, 宇宙線研究所, 助教 (40360581)
常定 芳基  大阪公立大学, 大学院理学研究科, 教授 (50401526)
有働 慈治  神奈川大学, 工学部, 准教授 (50506714)
冨田 孝幸  信州大学, 学術研究院工学系, 助教 (70632975)
多米田 裕一郎  大阪電気通信大学, 工学部, 准教授 (90467019)
Project Period (FY) 2019-06-26 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥202,410,000 (Direct Cost: ¥155,700,000、Indirect Cost: ¥46,710,000)
Fiscal Year 2023: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2022: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2021: ¥32,240,000 (Direct Cost: ¥24,800,000、Indirect Cost: ¥7,440,000)
Fiscal Year 2020: ¥66,950,000 (Direct Cost: ¥51,500,000、Indirect Cost: ¥15,450,000)
Fiscal Year 2019: ¥75,140,000 (Direct Cost: ¥57,800,000、Indirect Cost: ¥17,340,000)
Keywords銀河系内宇宙線 / 銀河系外宇宙線 / 原子核組成 / 宇宙線 / 化学組成 / 宇宙線の起源 / 銀河系 / 銀河間空間 / 宇宙物理 / 超高エネルギー宇宙線 / 宇宙線の化学組成 / 宇宙線の伝播 / 宇宙線化学組成 / 空気シャワー / 大気蛍光望遠鏡 / 宇宙線物理学
Outline of Research at the Start

TA実験は700平方kmをカバーする507台の地表検出器(SD、1.2km間隔)と38台の大気蛍光望遠鏡(FD)からなり、さらに「TALEハイブリッド実験」と呼ばれる、低エネルギー側への検出感度拡張のための高密度配置30平方km SDアレイ(80台、400m間隔)と高仰角FD 10台が追加され、2018年から稼働している。本研究では、このTALEハイブリッド実験を5年間継続し、さらに200m間隔で50台のSDを追加設置し、化学組成測定感度を10の15乗電子ボルトまで下げる。これによって10の15乗電子ボルト以上5桁におよぶ広い範囲でのエネルギースペクトルと化学組成の精密同時測定する。

Outline of Final Research Achievements

The Telescope Array Experiment (TA), an international joint experiment involving about 150 researchers from nine countries and regions including Japan, the United States, and South Korea, has been operating the largest cosmic ray observatory in the Northern Hemisphere in Utah, USA, since 2008. Through this research, the TA experiment has succeeded in lowering the cosmic ray detection energy to the 10 to the15th power electron volt (eV) region, and is continuing stable observations. In addition, the cosmic-ray energy spectrum and chemical composition (three-component composition ratios of representative nuclear species, hydrogen, nitrogen, and iron, and their energy variations) in the region from 10 to the17th to 10 to the19th power eV, where galactic- and extragalactic cosmic rays are coexisting, were obtained observationally.

Academic Significance and Societal Importance of the Research Achievements

本研究によって集められた観測データは今後速やかに解析されて、10の15乗 eV以上での銀河系内成分スペクトル、系内成分の化学組成とそのエネルギー依存性、銀河系外成分スペクトル、化学組成などが明らかになる。これらの観測的成果は1)銀河系外宇宙線源天体とその進化の解明、(2)銀河間磁場の強さと構造に対する示唆、(3)宇宙線の遮蔽・閉じ込めの解明から、宇宙線・銀河磁場・銀河ハローを含めた多体系としての銀河系の物理、(4)銀河系内宇宙線源天体の解明、(5)粒子加速理論の構築、に寄与する。

Assessment Rating
Ex-post Assessment Comments (Rating)

A: In light of the aim of introducing the research area into the research categories, expected outcomes of research have been produced.

Assessment Rating
Interim Assessment Comments (Rating)

A-: In light of the aim of introducing the research area into the research categories, the expected progress in research has been made on the whole though a part of it has been delayed.

Report

(11 results)
  • 2024 Ex-post Assessment (Comments) ( PDF )
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Abstract (Interim Assessment) ( PDF )   Annual Research Report   Interim Assessment (Comments) ( PDF )
  • 2020 Annual Research Report
  • 2019 Abstract ( PDF )   Comments on the Screening Results ( PDF )   Annual Research Report
  • Research Products

    (68 results)

All 2024 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (24 results) Journal Article (9 results) (of which Int'l Joint Research: 8 results,  Open Access: 8 results,  Peer Reviewed: 2 results) Presentation (31 results) (of which Int'l Joint Research: 14 results,  Invited: 4 results) Remarks (4 results)

  • [Int'l Joint Research] Loyola University Chicago/University of Utah(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Hanyang University/Sungkyunkwan University/Yonsei University(韓国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Institute for Nuclear Research/Moscow M.V. Lomonosov State University(ロシア連邦)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Universite Libre de Bruxelles(ベルギー)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Czech Academy of Sciences(チェコ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Loyola University Chicago/University of Utah(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Hanyang University/Sungkyunkwan University/Yonsei University(韓国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Institute for Nuclear Research/Moscow M.V. Lomonosov State University(ロシア連邦)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Universite Libre de Bruxelles(ベルギー)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Czech Academy of Sciences(チェコ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Loyola University Chicago/University of Utah(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Hanyang University/Sungkyunkwan University/Yonsei University(韓国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Institute for Nuclear Research/Moscow M.V. Lomonosov State University(ロシア連邦)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Universite Libre de Bruxelles(ベルギー)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Czech Academy of Sciences(チェコ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Loyola University Chicago/University of Utah(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Hanyang University/Sungkyunkwan University/Yonsei University(韓国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Institute for Nuclear Research/Moscow M.V. Lomonosov State University(ロシア連邦)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Universite Libre de Bruxelles(ベルギー)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Czech Academy of Sciences(チェコ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Measurement of cosmic-ray energy spectrum with the TALE detector in hybrid mode2023

    • Author(s)
      H. Oshima, K. Fujita, S. Ogio, T. Sako for the Telescope Array collaboration
    • Journal Title

      PoS(ICRC2023)

      Volume: 444 Pages: 217-217

    • DOI

      10.22323/1.444.0271

    • Related Report
      2023 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Cosmic ray mass composition measurement with the TALE hybrid detector2023

    • Author(s)
      K. Fujita for the Telescope Array collaboration
    • Journal Title

      PoS(ICRC2023)

      Volume: 444 Pages: 401-401

    • DOI

      10.22323/1.444.0401

    • Related Report
      2023 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Measurement of the cosmic ray energy spectrum in the 2nd knee region with the TALE-SD array2023

    • Author(s)
      I. Komae for the Telescope Array collaboration
    • Journal Title

      PoS(ICRC2023)

      Volume: 444 Pages: 405-405

    • DOI

      10.22323/1.444.0405

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Performance of the TALE infill experiment as a TA-TALE extension down to the PeV region2023

    • Author(s)
      Iwasaki Aoi, et al.
    • Journal Title

      EPJ Web of Conferences

      Volume: 283 Pages: 06015-06015

    • DOI

      10.1051/epjconf/202328306015

    • Related Report
      2022 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Cosmic ray mass composition measurement with the TALE hybrid detector2023

    • Author(s)
      Fujita Keitaro, et al.
    • Journal Title

      EPJ Web of Conferences

      Volume: 283 Pages: 02009-02009

    • DOI

      10.1051/epjconf/202328302009

    • Related Report
      2022 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] A machine learning approach for mass composition analysis with TALE-SD data2023

    • Author(s)
      Arimura Ryuhei, et al.
    • Journal Title

      EPJ Web of Conferences

      Volume: 283 Pages: 02011-02011

    • DOI

      10.1051/epjconf/202328302011

    • Related Report
      2022 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Measurement of Cosmic-ray Energy Spectrum with the TALE Detector in Hybrid Mode2023

    • Author(s)
      Oshima Hitoshi, et al.
    • Journal Title

      EPJ Web of Conferences

      Volume: 283 Pages: 02006-02006

    • DOI

      10.1051/epjconf/202328302006

    • Related Report
      2022 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] The Cosmic-Ray Composition between 2 PeV and 2 EeV Observed with the TALE Detector in Monocular Mode2021

    • Author(s)
      Abbasi R. U. et al. (Telescope Array collaboration)
    • Journal Title

      The Astrophysical Journal

      Volume: 909 Issue: 2 Pages: 178-178

    • DOI

      10.3847/1538-4357/abdd30

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Search for Large-scale Anisotropy on Arrival Directions of Ultra-high-energy Cosmic Rays Observed with the Telescope Array Experiment2020

    • Author(s)
      Abbasi R. U. et al. (Telescope Array collboration)
    • Journal Title

      The Astrophysical Journal

      Volume: 898 Issue: 2 Pages: L28-L28

    • DOI

      10.3847/2041-8213/aba0bc

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] TALE実験ハイブリッド観測による2nd knee領域宇宙線のエネルギースペクトルと原子核組成2024

    • Author(s)
      藤田慧太郎
    • Organizer
      CALETによる銀河宇宙線・ガンマ線観測の現状と展望
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] TA実験417:TALE-SDアレイによるエネルギースペクトル解析22024

    • Author(s)
      古前壱朗
    • Organizer
      日本物理学会2024年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] TA実験418:TALE infill-SDの運用状況と実データ解析2024

    • Author(s)
      河内祐輔
    • Organizer
      日本物理学会2024年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Recent results from TALE and Telescope Array2023

    • Author(s)
      K. Fujita
    • Organizer
      Theory meeting Experiment 2023 (TMEX2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] TA実験395:TALE実験全体報告92023

    • Author(s)
      古前壱朗
    • Organizer
      日本物理学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] TA実験396:TALE実験ハイブリッド観測による エネルギースペクトル測定2023

    • Author(s)
      大島仁
    • Organizer
      日本物理学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Performance of the TALE infill experiment as a TA-TALE extension down to the PeV region2022

    • Author(s)
      IWASAKI, Aoi
    • Organizer
      UHECR2022 (L'Aquila, Italy)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cosmic ray mass composition measurement with the TALE hybrid detector2022

    • Author(s)
      FUJITA, Keitaro
    • Organizer
      UHECR2022 (L'Aquila, Italy)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A machine learning approach for mass composition analysis with TALE-SD data2022

    • Author(s)
      ARIMURA, Ryuhei
    • Organizer
      UHECR2022 (L'Aquila, Italy)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Measurement of cosmic-ray energy spectrum with the TALE detector in hybrid mode2022

    • Author(s)
      OSHIMA, Hitoshi
    • Organizer
      UHECR2022 (L'Aquila, Italy)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TA実験387:TALE実験全体報告82022

    • Author(s)
      古前壱朗
    • Organizer
      日本物理学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] TA実験367: TALE実験ハイブリッド観測によるエネルギースペクトル及び質量組成測定2021

    • Author(s)
      藤田慧太郎
    • Organizer
      日本物理学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] TA実験368: TALE-SD及びTA-SDで測定された宇宙線の到来方向の異方性解析2021

    • Author(s)
      木村優介
    • Organizer
      日本物理学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] TA実験369: TALE実験のinfill SDアレイによる拡張と観測精度などのシミュレーションによる評価2021

    • Author(s)
      岩崎葵
    • Organizer
      日本物理学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Cosmic Ray Composition in the Second Knee Region as Measured by the TALE Hybrid Detector2021

    • Author(s)
      FUJITA, Keitaro
    • Organizer
      ICRC2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cosmic ray energy spectrum in the 2nd knee region measured by the TALE-SD array2021

    • Author(s)
      SATO, Koki
    • Organizer
      ICRC2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The status of the TALE surface detector array and a TALE infill project2021

    • Author(s)
      OGIO, Shoichi
    • Organizer
      ICRC2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TA実験355: TALE実験全体報告62021

    • Author(s)
      荻尾彰一
    • Organizer
      日本物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] TA実験356: TALE実験ハイブリッド観測によるデータの解析2021

    • Author(s)
      藤田慧太郎
    • Organizer
      日本物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] TA実験357: TALE-SDアレイで測定された2nd knee領域宇宙線のエネルギースペクトル2021

    • Author(s)
      佐藤光希
    • Organizer
      日本物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] TA実験343: TALE-SDによるエネルギー決定精度の評価2020

    • Author(s)
      佐藤光希
    • Organizer
      日本物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] TA実験348: TALE実験大気蛍光望遠鏡を用いた単眼観測によるデータの解析2020

    • Author(s)
      藤田慧太郎
    • Organizer
      日本物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] TA実験333:TALE実験全体報告 52020

    • Author(s)
      田上裕太
    • Organizer
      日本物理学会第 75 回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] TA 実験 338:Correlation analysis between TA UHECRs and filaments of galaxies connected to the Virgo cluster2020

    • Author(s)
      Jihyun Kim
    • Organizer
      日本物理学会第 75 回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Highlights from the Telescope Array experiment2019

    • Author(s)
      Shoichi Ogio
    • Organizer
      20th Anniversary of the Foundation of the Pierre Auger Observatory
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Highlights from the Telescope Array experiment2019

    • Author(s)
      Shoichi Ogio
    • Organizer
      The 36th International Cosmic Ray Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] MC study for TALE Hybrid detector2019

    • Author(s)
      Keitaro Fujita
    • Organizer
      Topics on Astrophysics and Underground Physics 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Telescope Array Low energy Extension(TALE) Hybrid2019

    • Author(s)
      Shoichi Ogio
    • Organizer
      The 36th International Cosmic Ray Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Propagation of Ultra-high-energy Cosmic Rays in the Magnetized Cosmic Web2019

    • Author(s)
      Jihyun Kim
    • Organizer
      The 36th International Cosmic Ray Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of Air Shower Structure Measured with The Telescope Array Surface Detector2019

    • Author(s)
      Rosa Mayta
    • Organizer
      The 36th International Cosmic Ray Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TA実験330:TALE実験ハイブ リッド検出器の性能評価2019

    • Author(s)
      藤田慧太郎
    • Organizer
      日本物理学会 2019 年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Remarks] テレスコープアレイ実験

    • URL

      http://www-ta.icrr.u-tokyo.ac.jp/ta_public/index.html

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Remarks] Telescope Array project

    • URL

      http://www.telescopearray.org/

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Remarks] TALE

    • URL

      http://www-ta.icrr.u-tokyo.ac.jp/ta_public/tale.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] Telescope Array Project

    • URL

      http://www.telescopearray.org/

    • Related Report
      2019 Annual Research Report

URL: 

Published: 2019-06-27   Modified: 2025-02-04  

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