Development of Neutrino Radiation Hydrodynamic Schemes toward the Era of exa-scale computing

• Project/Area Number: 26870823
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: High performance computing; Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: National Astronomical Observatory of Japan (2016); Institute of Physical and Chemical Research (2014-2015)
• Principal Investigator: Takiwaki Tomoya 国立天文台, 理論研究部, 助教 (50507837)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 輻射輸送 / ニュートリノ / 高精度計算 / 超新星爆発

Outline of Final Research Achievements

We successfully develop a new neutrino radiation hydrodynamic code for core-collapse supernovae using M1-Closure scheme. The features of the code and the obtained results are described in Kuroda et al. 2016. The matrix inversion scheme used in the code is well-tuned and we got a few times of speed up from the original one.
Another achievement in this study is the code comparison between the other groups. That was urgent issue for the community of supernova models since the results obtained in one group is different from other groups. After the careful check, we found the difference originate from the input physics they employed not the numerical schemes.

Research Products

• [Journal Article] The Intermediate r-process in Core-collapse Supernovae Driven by the Magneto-rotational Instability (2017)
  • Author(s): Nishimura, N.; Sawai, H.; Takiwaki, T.; Yamada, S.; Thielemann, F.-K.
  • Journal Title: The Astrophysical Journal Letters Volume: 836 Issue: 2 Pages: L21-L21
  • DOI: 10.3847/2041-8213/aa5dee
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Gravitational wave asteroseismology with protoneutron stars (2016)
  • Author(s): Hajime Sotani, Tomoya Takiwaki
  • Journal Title: Physical Review D Volume: 94 Issue: 4
  • DOI: 10.1103/physrevd.94.044043
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Three-dimensional simulations of rapidly rotating core-collapse supernovae: finding a neutrino-powered explosion aided by non-axisymmetric flows (2016)
  • Author(s): Takiwaki, Tomoya; Kotake, Kei; Suwa, Yudai
  • Journal Title: Monthly Notices of the Royal Astronomical Society: Letters Volume: 461 Issue: 1 Pages: L112-L116
  • DOI: 10.1093/mnrasl/slw105
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Multi-messenger signals of long-term core-collapse supernova simulations : synergetic observation strategies (2016)
  • Author(s): Nakamura, K., Horiuchi, S., Tanaka, M., Hayama, K., Takiwaki, T., & Kotake, K
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 461 Issue: 3 Pages: 3296-3313
  • DOI: 10.1093/mnras/stw1453
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] A New Gravitational-wave Signature from Standing Accretion Shock Instability in Supernovae (2016)
  • Author(s): Kuroda, Takami; Kotake, Kei; Takiwaki, Tomoya
  • Journal Title: The Astrophysical Journal Letters Volume: 829 Issue: 1 Pages: L14-L14
  • DOI: 10.3847/2041-8205/829/1/l14
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] A New Multi-energy Neutrino Radiation-Hydrodynamics Code in Full General Relativity and Its Application to the Gravitational Collapse of Massive Stars (2016)
  • Author(s): Kuroda, Takami; Takiwaki, Tomoya; Kotake, Kei
  • Journal Title: The Astrophysical Journal Supplement Series Volume: 222 Issue: 2 Pages: 20-20
  • DOI: 10.3847/0067-0049/222/2/20
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The Criterion of Supernova Explosion Revisited: The Mass Accretion History (2016)
  • Author(s): Suwa, Yudai; Yamada, Shoichi; Takiwaki, Tomoya; Kotake, Kei
  • Journal Title: The Astrophysical Journal Volume: 816 Issue: 1 Pages: 43-43
  • DOI: 10.3847/0004-637x/816/1/43
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Coherent network analysis of gravitational waves from three-dimensional core-collapse supernova models (2015)
  • Author(s): Hayama, Kazuhiro; Kuroda, Takami; Kotake, Kei; Takiwaki, Tomoya
  • Journal Title: Physical Review D Volume: 92 Issue: 12 Pages: 122001-122001
  • DOI: 10.1103/physrevd.92.122001
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Systematic features of axisymmetric neutrino-driven core-collapse supernova models in multiple progenitors (2015)
  • Author(s): Nakamura, Ko; Takiwaki, Tomoya; Kuroda, Takami; Kotake, Kei
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 67 Issue: 6 Pages: 10716-10716
  • DOI: 10.1093/pasj/psv073
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The r-process Nucleosynthesis in the Various Jet-like Explosions of Magnetorotational Core-collapse Supernovae (2015)
  • Author(s): Nishimura, Nobuya; Takiwaki, Tomoya; Thielemann, Friedrich-Karl
  • Journal Title: The Astrophysical Journal Volume: 810 Issue: 2 Pages: 109-109
  • DOI: 10.1088/0004-637x/810/2/109
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Gravitational wave signals from three dimensional simulations of Core-Collapse Supernovae (2016)
  • Author(s): Tomoya Takiwaki
  • Organizer: 4th annual meeting of innovative area on MM study of GW sources
  • Place of Presentation: IPMU(千葉)
  • Year and Date: 2016-02-18
  • Int'l Joint Research / Invited
• [Presentation] ニュートリノ観測による超新星爆発メカニズムの探求 (2016)
  • Author(s): 滝脇知也
  • Organizer: 第二回超新星ニュートリノ研究会
  • Place of Presentation: 富山商工会議所(富山)
  • Year and Date: 2016-01-06
  • Invited
• [Presentation] A new class of rotational explosion in core-collapse supernovae (2015)
  • Author(s): Tomoya Takiwaki
  • Organizer: QUCS2015
  • Place of Presentation: 奈良春日野国際フォーラム（奈良）
  • Year and Date: 2015-11-04
  • Int'l Joint Research
• [Presentation] Dependence of nuclear equation of state on supernova explosion (2015)
  • Author(s): Tomoya Takiwaki
  • Organizer: Numazu workshop
  • Place of Presentation: 三島商工会議所（静岡）
  • Year and Date: 2015-09-01
  • Int'l Joint Research / Invited
• [Presentation] How supernova simulations are affected by input physics (2015)
  • Author(s): Tomoya Takiwaki
  • Organizer: MICRA2015
  • Place of Presentation: ストックホルム（スェーデン）
  • Year and Date: 2015-08-17
  • Int'l Joint Research
• [Presentation] How equation of state affects explosions of core-collapse supernovae (2015)
  • Author(s): Tomoya Takiwaki
  • Organizer: International Symposium on "Physics and Astronomy of Neutron Stars and Supernovae
  • Place of Presentation: 国立天文台（東京）
  • Year and Date: 2015-06-22
  • Int'l Joint Research / Invited
• [Presentation] 超新星３次元モデルに基づくニュートリノ信号 (2015)
  • Author(s): 滝脇知也
  • Organizer: ハイパーカミオカンデにおける宇宙ニュートリノ観測
  • Place of Presentation: 神戸大学百年記念館 六甲ホール（兵庫）
  • Year and Date: 2015-05-18
  • Invited
• [Presentation] ３次元超新星モデルからのニュートリノ予測 (2015)
  • Author(s): 滝脇知也
  • Organizer: 「宇宙の歴史をひもとく地下素粒子原子核研究」 2015年領域研究会
  • Place of Presentation: 神戸大学百年記念館 六甲ホール（兵庫）
  • Year and Date: 2015-05-15
  • Invited
• [Presentation] Turbulent theory of Core-collapse supernovae (2015)
  • Author(s): Tomoya Takiwaki
  • Organizer: MMCOCOS2015
  • Place of Presentation: Virginia(USA)
  • Year and Date: 2015-03-02 – 2015-03-06
  • Invited
• [Presentation] 京で解くニュートリノ輻射輸送問題と超新星爆発 (2014)
  • Author(s): 滝脇 知也
  • Organizer: プラズマシンポジウム
  • Place of Presentation: 朱鷺メッセ(新潟)
  • Year and Date: 2014-11-18 – 2014-11-21
  • Invited
• [Presentation] Explosion Mechanism of Core-collapse Supernovae (2014)
  • Author(s): Tomoya Takiwaki
  • Organizer: ect* workshop
  • Place of Presentation: Trento(Italy)
  • Year and Date: 2014-09-08 – 2014-09-12
  • Invited