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超新星元素合成とニュートリノ振動

Publicly Offered Research

Project AreaUnification and Development of the Neutrino Science Frontier
Project/Area Number 26105517
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionNational Astronomical Observatory of Japan

Principal Investigator

梶野 敏貴  国立天文台, 理論研究部, 准教授 (20169444)

Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsニュートリノ振動 / 超新星 / 元素合成 / MSW効果 / ニュートリノ集団振動 / 理論核物理 / 理論天文学 / 宇宙物理 / 天文
Outline of Annual Research Achievements

本研究計画の4つの目的、(1)ニュートリノ元素合成を研究するための超新星モデルの構築、(2)最新の原子核構造・反応データ、ニュートリノ・原子核反応率を取り入れたネットワークの開発、(3)元素の理論予測と太陽系組成との比較によるMSWニュートリノ振動の解明、(4)ν-ν散乱が引き起こすフレーバー集団振動の解明に対し、以下の成果があがった。
(1)ニュートリノ加熱型超新星、磁気回転流体ジェット型超新星、コラプサー、中性子星連星系の合体の1D/2D有効モデルを構築した。(2)最新の原子核質量・β崩壊寿命・核分裂分布、ニュートリノ・原子核反応率の理論を組み込んだネットワークコードを開発し、中性子星連星系の合体で核分裂が重要であることを明らかにした。(3)MSW効果に敏感な元素群として、酸素・ネオン・マグネシウム層で生成されるLa138、Ta181、Nb92、Tc98等、炭素層とヘリウム層で生成されるF19、B11、Li7等のアイソトープが明らかにされた。(4)ニュートリノ量子多体系を解く方法として、スピン多体系の厳密解を求めるベーテ仮説の手法を発展させた モデルを提案した。具体的には平均場近似とsingle angle近似の数値計算法を開発するに留まった。ニュートリノ集団振動がr過程に及ぼす効果の本格的な解明は、今後の持ち越された。
また、ニュートリノ加熱型超新星、磁気回転流体ジェット型超新星、コラプサー、中性子星連星系の合体で生成されるr過程元素を、銀河の化学的・動力学的進化の研究に応用した。初期宇宙で超新星r過程によって重元素が作られ始め、遅れて中性子星連星系の合体が寄与して、現在の太陽系r過程元素組成ができあがったとする理論モデルを提唱した。r過程元素量の極大前後の過少生成問題が解決され、宇宙初期世代星と太陽系の元素組成間のユニバーサリティーを説明できることが明らかになった。

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (43 results)

All 2016 2015 2014 Other

All Int'l Joint Research (3 results) Journal Article (18 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 18 results,  Open Access: 18 results,  Acknowledgement Compliant: 9 results) Presentation (20 results) (of which Int'l Joint Research: 9 results,  Invited: 15 results) Book (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] ノートルダム大学/ウィスコンシン大学/ウェスターンミシガン大学(米国)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] 崇実大学(韓国)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] ミマールサイナン工芸大学(トルコ)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Relative contributions of the weak, main and fission-recycling r-process2016

    • Author(s)
      S. Shibagaki, T. Kajino, G. J. Mathews, S. Chiba, S. Nishimura, and G. Lorusso
    • Journal Title

      Astrophys. J.

      Volume: 816 Issue: 2 Pages: 79-79

    • DOI

      10.3847/0004-637x/816/2/79

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Low-lying resonances and relativistic screening in Big Bang Nucleosynthesis2016

    • Author(s)
      M. A. Famiano, A. B. Balantekin, and T. Kajino
    • Journal Title

      Phys. Rev.

      Volume: C93 Issue: 4

    • DOI

      10.1103/physrevc.93.045804

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Constraints on Pre-Inflation Cosmology and Dark Flow2015

    • Author(s)
      G. J. Mathews, N. Q. Lan, and T. Kajino
    • Journal Title

      Pub. Korean Astron. Soc.

      Volume: 30 Issue: 2 Pages: 309-313

    • DOI

      10.5303/pkas.2015.30.2.309

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] In-medium effect on the muon-neutrino and anti-muon-neutrino quasi-elastic scattering off a nucleon in 12C2015

    • Author(s)
      M. K. Cheoun, K. S. Kim, H. Kim, W. Y. So, T. Maruyama, and T. Kajino
    • Journal Title

      Journal of Physics

      Volume: G42 Issue: 4 Pages: 045102-045102

    • DOI

      10.1088/0954-3899/42/4/045102

    • Related Report
      2015 Annual Research Report 2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] R-process nucleosynthesis in the MHD + neutrino heated collapsar jet2015

    • Author(s)
      Ko Nakamura, Toshitaka Kajino, Grant J. Mathews, Susumu Sato and Seiji Harikae
    • Journal Title

      Astron. & Astrophys

      Volume: 582 Pages: A34-A34

    • DOI

      10.1051/0004-6361/201526110

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Quantum Field Theoretic Treatment of Pion Production via Proton Synchrotron Radiation in Strong Magnetic Fields: Effects of Landau Levels2015

    • Author(s)
      T. Maruyama, M.-K. Cheoun, T. Kajino, Y. Kwon, G. J. Mathews, and C.-Y. Ryu
    • Journal Title

      Phys. Rev.

      Volume: D91 Issue: 12

    • DOI

      10.1103/physrevd.91.123007

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Enrichment of r-process Elements in Dwarf Spheroidal Galaxies in Chemo-dynamical Evolution Model2015

    • Author(s)
      Hirai, Yutaka; Ishimaru, Yuhri; Saitoh, Takayuki R.; Fujii, Michiko S.; Hidaka, Jun; Kajino, Toshitaka
    • Journal Title

      The Astrophysical Journal

      Volume: 814 Issue: 1 Pages: 41-41

    • DOI

      10.1088/0004-637x/814/1/41

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Constraints on Pre-inflation Fluctuations in a Nearly Flat Open ΛCDM Cosmology2015

    • Author(s)
      G. J. Mathews, I. S. Suh, N. Q. Lan, and T. Kajino
    • Journal Title

      Phys. Rev.

      Volume: D92 Issue: 12

    • DOI

      10.1103/physrevd.92.123514

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Possible Evidence for Planck-scale Resonant Particle Production during Inflation from the CMB Power Spectrum2015

    • Author(s)
      G. J. Mathews, Mayukh Gangopadhyay, K. Ichiki, and T. Kajino
    • Journal Title

      Phys. Rev.

      Volume: D92 Issue: 12

    • DOI

      10.1103/physrevd.92.123519

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] β-Decay Half-Lives of 110 Neutron-Rich Nuclei across the N=82 Shell Gap: Implications for the Mechanism and Universality of the Astrophysical r Process2015

    • Author(s)
      G. Lorusso, S. Nishimura, Z.Y. Xu, A. Jungclaus, Y. Shimizu, G.S. Simpson, P.-A. Soderstrom, H. Watanabe, F. Browne, P. Doornenbal, G. Gey, H.S. Jung, B. Meyer, T. Sumikama, J. Taprogge, Zs. Vajta, J. Wu, et al.
    • Journal Title

      Physical Review Letters

      Volume: 114 Issue: 19 Pages: 192501-192501

    • DOI

      10.1103/physrevlett.114.192501

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Neutrinos in Core-Collapse Supernovae and Nucleosynthesis2014

    • Author(s)
      T. Kajino, G. J. Mathews , and T. Hayakawa
    • Journal Title

      Journal of Physics

      Volume: G41 Issue: 4 Pages: 044007-044007

    • DOI

      10.1088/0954-3899/41/4/044007

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rapid spin deceleration of magnetized protoneutron stars via asymmetric neutrino emission2014

    • Author(s)
      Maruyama, Tomoyuki; Hidaka, Jun; Kajino, Toshitaka; Yasutake, Nobutoshi; Kuroda, Takami; Takiwaki, Tomoya; Cheoun, Myung-Ki; Ryu, Chung-Yeol; Mathews, Grant J.
    • Journal Title

      Physical Review C

      Volume: 89 Issue: 3 Pages: 035801-035801

    • DOI

      10.1103/physrevc.89.035801

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Supernova Relic Neutrinos and the Supernova Rate Problem: Analysis of Uncertainties and the role of Failed Supernovae2014

    • Author(s)
      G. J. Mathews, J. Hidaka, T. Kajino, and J. Suzuki
    • Journal Title

      Astrophysical Journal

      Volume: 790 Issue: 2 Pages: 115-115

    • DOI

      10.1088/0004-637x/790/2/115

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Neutrino Magnetic Moment, CP Violation and Flavor Oscillations in Matter2014

    • Author(s)
      Y. Pehlivan, A. B. Balantekin, and T. Kajino
    • Journal Title

      Physical Review

      Volume: D90 Issue: 6 Pages: 065011-065011

    • DOI

      10.1103/physrevd.90.065011

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Sterile neutrino oscillations in core-collapse supernova simulations2014

    • Author(s)
      M. L. Warren, M.Meixner, G. J. Mathews, J. Hidaka, and T. Kajino
    • Journal Title

      Physical Review

      Volume: D90 Issue: 10 Pages: 103007-103007

    • DOI

      10.1103/physrevd.90.103007

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Asymmetric neutrino production in strongly magnetized proto-neutron stars2014

    • Author(s)
      Maruyama, Tomoyuki; Cheoun, Myung-Ki; Hidaka, Jun; Kajino, Toshitaka; Kuroda, Takami; Mathews, Grant J.; Ryu, Chung-Yeol; Takiwaki, Tomoya; Yasutake, Nobutoshi
    • Journal Title

      Physical Review D

      Volume: 90 Issue: 6 Pages: 067302-067302

    • DOI

      10.1103/physrevd.90.067302

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Excited states above the proton threshold in 26Al2014

    • Author(s)
      T. Komatsubara, S. Kubono, T. Hayakawa, T. Moriguchi, Y. Ito, H. Ooishi, Y. Ishbashi, K. Y. Hara, A. Ozawa, T. Shizuma, S. Hayakawa, H. Yamaguchi, D. N. Binh, D. Kahl, A. A. Chen, J. Chen, K. Nakamura, and T. Kajino
    • Journal Title

      The European Physical Journal

      Volume: A50 Issue: 9 Pages: 136-136

    • DOI

      10.1140/epja/i2014-14136-4

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Determining Amino Acid Chirality in the Supernova Neutrino Processing Model2014

    • Author(s)
      M. Famiano, R. Boyd, T. Kajino, T. Onaka, K. Koehler, and Hulbert
    • Journal Title

      Symmetry

      Volume: 6 Issue: 4 Pages: 909-925

    • DOI

      10.3390/sym6040909

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Neutrino Astrophysics in Supernovae2016

    • Author(s)
      T. Kajino
    • Organizer
      KIAS/KNRC School on Neutrino Physics
    • Place of Presentation
      KIAS, Seoul, Korea
    • Year and Date
      2016-02-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Galactic Evolution of Supernova and Merger R-Process2015

    • Author(s)
      T. Kajino
    • Organizer
      Symposium on Quarks to Universe in Computational Science
    • Place of Presentation
      Nara Kasugano International Forum IRAKA, Nara, Nara, Japan
    • Year and Date
      2015-11-04
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Origin of R-Process Elements in Galactic Evolution and Relic Supernova Neutrinos2015

    • Author(s)
      T. Kajino
    • Organizer
      Korean Physical Society 2015 Fall Meeting
    • Place of Presentation
      Gyeonju, Korea
    • Year and Date
      2015-10-21
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Neutrino Physics in Astrophysics2015

    • Author(s)
      T. Kajino
    • Organizer
      The 8th European Summer School on Experimental Nuclear Astrophysics
    • Place of Presentation
      St. Tecla, Catania, Italy
    • Year and Date
      2015-09-13
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Galactic Evolution of the R-Process Elements and the Universality2015

    • Author(s)
      T. Kajino
    • Organizer
      International Numazu Workshop on Challenges of Modeling Supernovae with Nuclear Data
    • Place of Presentation
      Mishima Chamber of Commerce and Industry, Mishima, Shizuoka, Japan
    • Year and Date
      2015-09-01
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Solving Coalescence Time Scale Problem of GRB R-Process in Galactic Chemo-Dynamics2015

    • Author(s)
      T. Kajino
    • Organizer
      Gamma-Ray Burst Workshop
    • Place of Presentation
      RIKEN, Wako, Saitama, Japan
    • Year and Date
      2015-08-31
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Explosive nucleosynthesis: A Probe of Cosmic and Supernova Neutrinos2015

    • Author(s)
      T. Kajino
    • Organizer
      The 13th International Symposium on Origin of Matter and Evolution of Galaxies
    • Place of Presentation
      Beijing, China
    • Year and Date
      2015-06-23
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Quest for Nuclear Physics and the Origin of R-Process2015

    • Author(s)
      T. Kajino
    • Organizer
      The 3rd International Conference on Nuclear Structure and Dynamics
    • Place of Presentation
      Portoroz, Slovenia
    • Year and Date
      2015-06-15
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Supernova Neutrinos and Nucleosynthesis2015

    • Author(s)
      T. Kajino
    • Organizer
      The 5th International Symposium on Neutrinos and Dark Matter
    • Place of Presentation
      Jyuaskyla, Finland
    • Year and Date
      2015-06-01
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Element Genesis in the Universe2015

    • Author(s)
      T. Kajino
    • Organizer
      International Workshop on Nuclear Astrophysics
    • Place of Presentation
      Beijing, China
    • Year and Date
      2015-01-21 – 2015-01-23
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Supernova relic neutrino2014

    • Author(s)
      J. Hidaka, T. Kajino, G. J. Mathews, J. Suuki
    • Organizer
      HPCI International Workshop on Study of Neutron Stars and Core-Collapse Supernovae
    • Place of Presentation
      Institute of Physical and Chemical Research (RIKEN), Wako, Japan
    • Year and Date
      2014-12-16 – 2014-12-20
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Critical roles of fission in the r-process nucleosynthesis in binary neutron-star mergers and Galactic evolution2014

    • Author(s)
      T. Kajino
    • Organizer
      22nd ASRC International Workshop on Nuclear Fission and Exotic Nuclei
    • Place of Presentation
      Japan Atomic Energy Agency, Tokai, Japan
    • Year and Date
      2014-12-03 – 2014-12-05
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Roles of Nuclear Charge-Current responses in Supernova Nucleosynthesis and Neutrinos2014

    • Author(s)
      T. Kajino
    • Organizer
      International Symposium on Neutrino Nuclear Responses for Neutrino Studies in Nuclei
    • Place of Presentation
      Osaka University, Osaka, Japan
    • Year and Date
      2014-11-05 – 2014-11-06
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Big-Bang and Supernova Neutrinos and Nucleosynthesis2014

    • Author(s)
      T. Kajino
    • Organizer
      NUBA International Conference Nuclear Physics and Astrophysics
    • Place of Presentation
      Antalya, Turkey
    • Year and Date
      2014-09-15 – 2014-09-21
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] R-process in Neutron Star Mergers and Supernovae2014

    • Author(s)
      T. Kajino
    • Organizer
      ECT* Workshop No. 788 on Nuclear Physics and Astrophysics of Neutron-Star Mergers and Supernovae and Origin of R-process Elements
    • Place of Presentation
      Trento, Italy
    • Year and Date
      2014-09-08 – 2014-09-12
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Supernova as a Laboratory for Element Genesis and Neutrino Physics2014

    • Author(s)
      T. Kajino
    • Organizer
      18th International Workshop on Astro-Nuclear Physics
    • Place of Presentation
      Seoul, Korea
    • Year and Date
      2014-08-18 – 2014-08-20
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] R-process in Neutron Star Mergers and Supernovae2014

    • Author(s)
      T. Kajino
    • Organizer
      13th International Symposium on Nuclei in the Cosmos
    • Place of Presentation
      Debrecen, Hungary
    • Year and Date
      2014-07-07 – 2014-07-11
    • Related Report
      2014 Annual Research Report
  • [Presentation] Impact of nuclear fission on r-process nucleosynthesis and origin of solar r-process elements2014

    • Author(s)
      Shibagaki, Shota, Kajino, Toshitaka, Mathews, Grant J., Chiba, Satoshi
    • Organizer
      5th Carpathian Summer School in Physics
    • Place of Presentation
      Sinaia, Romania
    • Year and Date
      2014-06-13 – 2014-06-26
    • Related Report
      2014 Annual Research Report
  • [Presentation] Big-Bang and Supernova Neutrinos and Nucleosynthesis2014

    • Author(s)
      T. Kajino
    • Organizer
      5th Carpathian Summer School in Physics
    • Place of Presentation
      Sinaia, Romania
    • Year and Date
      2014-06-13 – 2014-06-26
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] R-process in neutron-star mergers with a new fission model2014

    • Author(s)
      Shibagaki, Shota, Kajino, Toshitaka, Mathews, Grant J., Chiba, Satoshi
    • Organizer
      2nd International Conference on Advances in Radioactive Isotope Science
    • Place of Presentation
      University of Tokyo, Tokyo, Japan
    • Year and Date
      2014-06-01 – 2014-06-06
    • Related Report
      2014 Annual Research Report
  • [Book] Proceedings, "Origin of Matter and Evolution of Galaxies ’13"2014

    • Author(s)
      H. Miyatake, T. Kajino, S. Jeong, K.-I. Nomoto, & N. Imai
    • Total Pages
      520
    • Publisher
      American Journal of Physics
    • Related Report
      2014 Annual Research Report
  • [Funded Workshop] The 13th International Symposium on Origin of Matter and Evolution of Galaxies2015

    • Place of Presentation
      Beijing, China
    • Year and Date
      2015-06-23
    • Related Report
      2015 Annual Research Report

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Published: 2014-04-04   Modified: 2022-02-22  

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