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Search for g-mode oscillations in the Sun using the detection timing information of solar neutrinos

Research Project

Project/Area Number 17K17880
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Astronomy
Research InstitutionKobe University (2019)
The University of Tokyo (2017-2018)

Principal Investigator

Nakano Yuuki  神戸大学, 理学研究科, 特命助教 (70781889)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords太陽ニュートリノ / 星震学 / 太陽g-mode振動 / ニュートリノ天文学 / 日震学 / g-mode振動 / 太陽標準模型 / 宇宙線 / ニュートリノ / 太陽 / 星辰学 / Super-Kamiokande / 惑星起源・進化
Outline of Final Research Achievements

In order to search for the periodic variation of solar neutrino flux originated the solar g-mode oscillation, solar neutrino data taken by the Super-Kamiokande detector was analyzed. At first, periodic signals whose phase is typically a few month are searched by using Lomb-Scargle method. However, no periodic signal was found in the solar neutrino data. To search for periodic signals of g-mode oscillations (typically 20-30 minutes), periodicities of background events in the solar neutrino data are investigated. One of background events is radioactive isotope produced by the decay of Radon dissolving into pure water. The other is spallation products cased by the cosmic ray muons.

Academic Significance and Societal Importance of the Research Achievements

太陽内部で生じているとされている太陽g-mode振動は存在が予言されているものの、未だに観測例の報告がない。これは、太陽内部の情報は、光学的に観測することができないことに由来する。したがって、本研究では、Super-Kamiokande実験で取得された太陽ニュートリノ観測データから、周期的な信号を探索することで、透過性の高いニュートリノを用いて太陽内部の運動(g-mode振動)のを探索することを試みた。いろいろな周期の信号を探索するために、バックグラウンド事象の周期性の評価が必要であることがわかった。今後、太陽内部の運動や宇宙線と太陽活動との相関関係を明らかにする研究に道を開くと期待される。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (24 results)

All 2020 2019 2018 2017 Other

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 5 results) Presentation (17 results) (of which Int'l Joint Research: 7 results,  Invited: 5 results) Remarks (2 results)

  • [Journal Article] Latest result of solar neutrino analysis in Super-Kamiokande2020

    • Author(s)
      Nakano Yuuki
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1468 Issue: 1 Pages: 012189-012189

    • DOI

      10.1088/1742-6596/1468/1/012189

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Recent Solar neutrino Results from Super-Kamiokande2020

    • Author(s)
      Nakano Y.、Super-Kamiokande Collaboration
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1342 Issue: 1 Pages: 012037-012037

    • DOI

      10.1088/1742-6596/1342/1/012037

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] スーパーカミオカンデの紹介と施設への放射性ラドンガスの影響について2019

    • Author(s)
      中野 佑樹
    • Journal Title

      放射線化学

      Volume: 108 Pages: 19-25

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Highlight Talk from Super-Kamiokande2019

    • Author(s)
      Yuuki Nakano and On behalf of the Super-Kamiokande Collaboration
    • Journal Title

      Universe

      Volume: 5 Issue: 1 Pages: 20-20

    • DOI

      10.3390/universe5010020

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Study for g-mode oscillations in the Sun using solar neutrino with Super-Kamiokande2018

    • Author(s)
      Yuuki Nakano for the Super-Kamiokande collaboration
    • Journal Title

      zendo

      Volume: -

    • DOI

      10.5281/zenodo.1300811

    • Related Report
      2018 Research-status Report
    • Open Access
  • [Presentation] Super-Kamiokande 検出器を用いた太陽ニュートリノ観測の最新結果と今後の展望2019

    • Author(s)
      中野 佑樹, 他Super-Kamiokande collaboration
    • Organizer
      日本物理学会 2019年 秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Development of low background Rn detector and its application in Kamioka2019

    • Author(s)
      Yuuki Nakano
    • Organizer
      Workshop of Jinping Neutrino Experiment 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Study for g-mode oscillations in the Sun using solar neutrino2019

    • Author(s)
      中野 佑樹
    • Organizer
      新学術領域「ニュートリノで拓く素粒子と宇宙」研究会2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] Super-Kamiokande検出器における改修工事後の太陽ニュートリノ観測とバックグラウンドの研究2019

    • Author(s)
      中野 佑樹, 岡本 幸平, 他Supper-Kamiokande collaboration
    • Organizer
      日本物理学会 第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Study for g-mode oscillations in the Sun using solar neutrino with Super-Kamiokande2018

    • Author(s)
      Yuuki Nakano for the Super-Kamiokande collaboration
    • Organizer
      Neutrino2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Highlight talk from Super-Kamiokande2018

    • Author(s)
      Yuuki Nakano for the Super-Kamiokande collaboration
    • Organizer
      ICNFP2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] The latest results from the Super-Kamiokande experiment2018

    • Author(s)
      Yuuki Nakano for the Super-Kamiokande collaboration
    • Organizer
      Windows on the universe
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Super-Kamiokande検出器における 水槽内のラドン濃度に関する研究2018

    • Author(s)
      中野 佑樹 他Super-Kamiokande collaboration
    • Organizer
      日本物理学会2018秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Status of solar neutrino physics at SK2018

    • Author(s)
      Yuuki Nakano for the Super-Kamiokande collaboration
    • Organizer
      MTEX2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] SK/SK-Gd water system2018

    • Author(s)
      Yuuki Nakano for the Super-Kamiokande collaboration
    • Organizer
      MTEX2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 太陽g-mode振動による 太陽ニュートリノ強度の周期的な変動探索2018

    • Author(s)
      中野 佑樹
    • Organizer
      第3回 宇宙素粒子若手の会 秋の研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] Study for g-mode oscillations in the Sun using solar neutrino2018

    • Author(s)
      Yuuki Nakano
    • Organizer
      新学術「地下素核研究」 第4回超新星ニュートリノ研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Search for g-mode oscillation using solar neutrino2018

    • Author(s)
      Yuuki Nakano
    • Organizer
      Asteroseismology and its impact on other branches of astronomy
    • Related Report
      2017 Research-status Report
  • [Presentation] スーパーカミオカンデ実験における 太陽ニュートリノ解析の現状報告2018

    • Author(s)
      長谷川 誠 他Super-Kamiokande collaboration
    • Organizer
      日本物理学会 第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Super-Kamiokande検出器における 低エネルギー事象のエネルギースケール評価2018

    • Author(s)
      中野 佑樹, 長谷川 誠, 中島 康博, Linyan Wan 他Super-Kamiokande collaboration
    • Organizer
      日本物理学会 第73回年次大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Recent Solar neutrino Results from Super-Kamiokande2017

    • Author(s)
      Yuuki Nakano
    • Organizer
      XV International Conference on Topics in Astroparticle and Underground Physics (TAUP2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] スーパーカミオカンデ検出器における 太陽ニュートリノ解析の最新結果2017

    • Author(s)
      長谷川 誠 他Super-Kamiokande collaboration
    • Organizer
      日本物理学会 2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Remarks] Yuuki NakanoのHP

    • URL

      http://ppwww.phys.sci.kobe-u.ac.jp/~nakano/index.html

    • Related Report
      2019 Annual Research Report
  • [Remarks] Yuuki NakanoのHP

    • URL

      http://www-sk.icrr.u-tokyo.ac.jp/~ynakano_s/budget/g_mode.html

    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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