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CTA LST

Research Project

Project/Area Number 20K03996
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionIbaraki University

Principal Investigator

Tatsuo Yoshida  茨城大学, 理工学研究科(理学野), 教授 (60241741)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywords解像型大気チェレンコフ望遠鏡 / 超高エネルギーガンマ線天体物理学 / CTA大口径望遠鏡 / 超高エネルギー宇宙線源
Outline of Research at the Start

宇宙から地球に飛来する陽子や原子核の荷電粒子である超高エネルギー宇宙線は、宇宙のどこでどのように加速されているのかは謎である。2022年からステレオ観測を開始する予定のCherenkov Telescope Array(CTA)計画の大口径望遠鏡により、宇宙線の起源に迫るマルチメッセンジャー宇宙物理学を展開していきたい。そのために、本研究では、チェレンコフ光の観測には必ずしも適さない条件で起こりうる超高エネルギー宇宙線源候補天体の活動時における、ニュートリノや重力波との同時観測の頻度を高めるための準備研究を行う。

Outline of Final Research Achievements

In order to observe the activity of ultra-high energy cosmic-ray source candidates in the low-energy gamma-ray band from 20 GeV to 1 TeV, stereoscopic observations with the Large-Sized Telescopes (LST-2-4) of the Cherenkov Telescope Array (CTA) are highly anticipated. It is essential to evaluate the performance of the elements of the LSTs' optical system for capturing gamma-rays in this energy band. In this research, the performance evaluations of the main elements of the optical system;specifically, the spherical mirror segments that constitute the primary parabolic mirror of the LSTs and the hexagonal light concentrators of the focal-plane camera, have been carried out.

Academic Significance and Societal Importance of the Research Achievements

LST-2-4号基の光学系の性能評価の結果、CTA北サイトのLST-2-4号基のステレオ観測開始後、高エネルギーニュートリノ天文学、重力波天文学、他の波長の電磁波天文観測と連携し、20 GeVから1 TeV程度のエネルギー帯の超高エネルギー宇宙線源候補天体フレア時のマルチメッセンジャー観測で十分な貢献を果たすことが期待できることがわかった

Report

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

    (17 results)

All 2023 2022 2020 Other

All Int'l Joint Research (8 results) Journal Article (7 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 5 results,  Open Access: 6 results) Presentation (2 results)

  • [Int'l Joint Research] Max-Planck-Institut fuer Physik(ドイツ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] CIEMAT(スペイン)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Max-Planck-Institut fuer Physik(ドイツ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] CIEMAT(スペイン)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Max-Planck-Institut fuer Physik(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] CIEMAT(スペイン)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Max-Planck-Institut fuer Physik(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] CIEMAT(スペイン)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Observations of the Crab Nebula and Pulsar with the Large-sized Telescope Prototype of the Cherenkov Telescope Array2023

    • Author(s)
      Abe H.、Abe K.、Abe S.、et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 956 Issue: 2 Pages: 80-80

    • DOI

      10.3847/1538-4357/ace89d

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Performance of the joint LST-1 and MAGIC observations evaluated with Crab Nebula data2023

    • Author(s)
      Abe H.、Abe K.、Abe S.、et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 680 Pages: A66-A66

    • DOI

      10.1051/0004-6361/202346927

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Star tracking for pointing determination of Imaging Atmospheric Cherenkov Telescopes2023

    • Author(s)
      K. Abe, et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 679 Pages: A90-A90

    • DOI

      10.1051/0004-6361/202347128

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multiwavelength study of the galactic PeVatron candidate LHAASO J2108+51572023

    • Author(s)
      Project CTA-LST、Jurysek J.、Balbo M.、Eckert D.、Tramacere A.、et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: - Pages: A75-A75

    • DOI

      10.1051/0004-6361/202245086

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sensitivity of the Cherenkov Telescope Array to spectral signatures of hadronic PeVatrons with application to Galactic Supernova Remnants2023

    • Author(s)
      TheCherenkov Telescope Array Consortium, Acero F., Acharyya A., Adam R. et al.
    • Journal Title

      Astroparticle Physics

      Volume: 150 Pages: 102850-102850

    • DOI

      10.1016/j.astropartphys.2023.102850

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Commissioning of the camera of the first Large Size Telescope of the Cherenkov Telescope Array2022

    • Author(s)
      T. Saito, C. Delgado, O. Blanch, 他28人, T. Yamamoto, T. Yoshida for the CTA LST project)
    • Journal Title

      Proceeidings of Science - 37th International Cosmic Ray Conference (ICRC2021)

      Volume: 395 Pages: 718-718

    • DOI

      10.22323/1.395.0718

    • Related Report
      2021 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Design and production of segment mirrors for the large-sized telescopes of the Cherenkov Telescope Array2020

    • Author(s)
      Inada Tomohiro、Fukami Satoshi、Noda Koji、Chikawa Michiyuki、Kagaya Mika、Katagiri Hideaki、Mazin Daniel、Obara Koutaro、Okumura Akira、Saito Takayuki、Teshima Masahiro、Yamamoto Tokonatsu、Yoshida Tatsuo、Vovk Ievgen
    • Journal Title

      Proc. SPIE 11451, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV

      Volume: 11451 Pages: 11-11

    • DOI

      10.1117/12.2562111

    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] CTA大口径望遠鏡2-4号機における波形記録チップDRS4のサンプリング時間幅較正2023

    • Author(s)
      服部勇大, 片桐秀明, 吉田龍生, CTA-Japan Consortium
    • Organizer
      日本天文学会2023年春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] CTA報告 170:CTA大口径望遠鏡2-4号基における分割鏡配置の決定と光学性能の検証2020

    • Author(s)
      小原光太郎, 稲田知大, 野田浩司, 深見哲志, Ievgen Vovk, 奥村曉, 加賀谷美佳, 片桐秀明, 齋藤隆之, 手嶋政廣, 千川道幸, 山本常夏, 吉田龍生, 他 CTA-Japanコンソーシアム
    • Organizer
      日本物理学会 2020年秋季大会
    • Related Report
      2020 Research-status Report

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

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