Extending the frontier of the transient science by multi-dimensional and multi-wavelength radiation transfer simulations

• Project Area: Gravitational wave physics and astronomy: Genesis
• Project/Area Number: 18H04585
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Research Institution: Kyoto University
• Principal Investigator: 前田 啓一 京都大学, 理学研究科, 准教授 (00503880)
• Project Period (FY): 2018-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: 輻射輸送 / 超新星 / 重力波天体

Outline of Annual Research Achievements

超新星爆発機構の全貌解明のためには、爆発モデルに基づいた輻射計算により予想される光度曲線・スペクトルを導き、これを様々な観測データにより検証することが必要である。本課題では、（１）超新星・爆発的天体現象に適用するための多次元・多波長輻射輸送コードの開発、（２）最新の超新星爆発モデルへの適用による、爆発理論の直接検証、を目的とする。本課題では、特に以下の天体をターゲットとした研究を進める。（a）標準的な「ニュートリノ駆動超新星」の現実的・多次元モデルに基づいた一般的な超新星の研究、（b）「連星中性子星の先駆超新星」モデルに基づいた、連星中性子星の形成過程の研究、（c）「超強磁場中性子星駆動超新星」の多次元モデルに基づいた、超高輝度超新星の研究。
2019年度には、標準的なニュートリノ駆動爆発シナリオに沿った最新の三次元爆発モデルに基づき、放射性元素崩壊に伴うガンマ線・エックス線放射計算の結果を二編の査読論文として発表した。超新星SN1987Aに対して提唱されている爆発モデルがこれら高エネルギー放射の観測事実を良く説明できることを示すとともに、親星モデルや金属量に制限をつけられることを示した。また、超強磁場中性子星駆動超新星の三次元モデル爆発モデルの流体計算結果を査読誌において発表した。以前に発表した二次元モデルの結果が正しいことを示したほか、予想される観測的帰結についてさらに詳細な議論を構築した。そのほか、多次元爆発モデルに基づいた多次元輻射輸送の応用として、白色矮星潮汐破壊現象の三次元可視光放射計算を行い、これを査読論文として発表した。ヘリウム白色矮星と炭素・酸素白色矮星では別種の突発天体として観測されることを示し、さらに現在その起源がわかっていない短いタイムスケールの突発現象の起源の候補になり得ることを示した。以上の成果を複数の国内外研究会で発表した。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] California Institute of Technology/Space Telescope Science Institute/University of Minnesota(米国)
• [Int'l Joint Research] MPA/MPE(ドイツ)
• [Int'l Joint Research] Stockholm University/KTH Royal Institute of Technology(スウェーデン)
• [Int'l Joint Research] Monash University/Macquarie University(オーストラリア)
• [Int'l Joint Research] University of Amsterdam(オランダ)
• [Int'l Joint Research] Pennsylvania State University/Northwestern University/Ohio State University,(米国)
• [Int'l Joint Research] DESY/MPE/Thuringer Landessternwarte Tautenburg(ドイツ)
• [Int'l Joint Research] Instituto de Astrofisica de Andalucia(スペイン)
• [Int'l Joint Research] University of Copenhagen/Technical University of Denmark(デンマーク)
• [Int'l Joint Research] Osservatorio Astronomico di Capodimonte/Osservatorio Astronomico di Brera/Osservatorio Astronomico di Roma(イタリア)
• [Int'l Joint Research]
• [Journal Article] Properties of gamma-ray decay lines in 3D core-collapse supernova models, with application to SN 1987A and Cas A (2020)
  • Author(s): Jerkstrand A、Wongwathanarat A、Janka H-T、Gabler M、Alp D、Diehl R、Maeda K、Larsson J、Fransson C、Menon A、Heger A
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 494 Issue: 2 Pages: 2471-2497
  • DOI: 10.1093/mnras/staa736
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The HSC-SSP Transient Survey: Implications from Early Photometry and Rise Time of Normal Type Ia Supernovae (2020)
  • Author(s): Jiang Ji-an、Yasuda Naoki、Maeda Keiichi、Doi Mamoru、Shigeyama Toshikazu、Tominaga Nozomu、Tanaka Masaomi、Moriya Takashi J.、Takahashi Ichiro、Suzuki Nao、Morokuma Tomoki、Nomoto Ken’ichi
  • Journal Title: The Astrophysical Journal Volume: 892 Issue: 1 Pages: 25-37
  • DOI: 10.3847/1538-4357/ab76cb
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Rapid Transients Originating from Thermonuclear Explosions in Helium White Dwarf Tidal Disruption Events (2020)
  • Author(s): Kawana Kojiro、Maeda Keiichi、Yoshida Naoki、Tanikawa Ataru
  • Journal Title: The Astrophysical Journal Volume: 890 Issue: 2 Pages: L26-L26
  • DOI: 10.3847/2041-8213/ab7209
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A type Ia supernova at the heart of superluminous transient SN 2006gy (2020)
  • Author(s): Jerkstrand, Anders, Maeda, Keiichi, Kawabata, Koji S.
  • Journal Title: Science Volume: 367 Issue: 6476 Pages: 415-418
  • DOI: 10.1126/science.aaw1469
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Supernova 2014C: Ongoing Interaction with Extended Circumstellar Material with Silicate Dust (2019)
  • Author(s): Tinyanont Samaporn、Lau Ryan M.、Kasliwal Mansi M.、Maeda Keiichi、Smith Nathan、Fox Ori D.、Gehrz Robert D.、De Kishalay、Jencson Jacob、Bally John、Masci Frank
  • Journal Title: The Astrophysical Journal Volume: 887 Issue: 1 Pages: 75-75
  • DOI: 10.3847/1538-4357/ab521b
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Properties of the Post-inspiral Common Envelope Ejecta - I. Dynamical and Thermal Evolution (2019)
  • Author(s): Roberto Iaconi, Keiichi Maeda, Orsola De Marco, Takaya Nozawa, Thomas Reichardt
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 489 Issue: 3 Pages: 3334-3350
  • DOI: 10.1093/mnras/stz2312
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Nucleosynthesis Constraints on the Energy Growth Timescale of a Core-collapse Supernova Explosion (2019)
  • Author(s): Sawada Ryo、Maeda Keiichi
  • Journal Title: The Astrophysical Journal Volume: 886 Issue: 1 Pages: 47-47
  • DOI: 10.3847/1538-4357/ab4da3
  • Peer Reviewed
• [Journal Article] Double-detonation Models for Type Ia Supernovae: Trigger of Detonation in Companion White Dwarfs and Signatures of Companions’ Stripped-off Materials (2019)
  • Author(s): Tanikawa Ataru、Nomoto Ken’ichi、Nakasato Naohito、Maeda Keiichi
  • Journal Title: The Astrophysical Journal Volume: 885 Issue: 2 Pages: 103-103
  • DOI: 10.3847/1538-4357/ab46b6
  • Peer Reviewed
• [Journal Article] Possible Contribution of Magnetized White Dwarf Binaries to Type Ia Supernova Populations (2019)
  • Author(s): Ablimit Iminhaji、Maeda Keiichi
  • Journal Title: The Astrophysical Journal Volume: 885 Issue: 2 Pages: 99-99
  • DOI: 10.3847/1538-4357/ab4814
  • Peer Reviewed
• [Journal Article] Radio Emission from Supernovae in the Very Early Phase: Implications for the Dynamical Mass Loss of Massive Stars (2019)
  • Author(s): Matsuoka Tomoki、Maeda Keiichi、Lee Shiu-Hang、Yasuda Haruo
  • Journal Title: The Astrophysical Journal Volume: 885 Issue: 1 Pages: 41-41
  • DOI: 10.3847/1538-4357/ab4421
  • Peer Reviewed
• [Journal Article] X-Ray and Gamma-Ray Emission from Core-collapse Supernovae: Comparison of Three-dimensional Neutrino-driven Explosions with SN 1987A (2019)
  • Author(s): Alp Dennis、Larsson Josefin、Maeda Keiichi、Fransson Claes、Wongwathanarat Annop、Gabler Michael、Janka Hans-Thomas、Jerkstrand Anders、Heger Alexander、Menon Athira
  • Journal Title: The Astrophysical Journal Volume: 882 Issue: 1 Pages: 22-22
  • DOI: 10.3847/1538-4357/ab3395
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Constraining Massive Star Activities in the Final Years through Properties of Supernovae and Their Progenitors (2019)
  • Author(s): Ouchi Ryoma、Maeda Keiichi
  • Journal Title: The Astrophysical Journal Volume: 877 Issue: 2 Pages: 92-105
  • DOI: 10.3847/1538-4357/ab1a37
  • Peer Reviewed
• [Journal Article] Three-dimensional Hydrodynamic Simulations of Supernova Ejecta with a Central Energy Source (2019)
  • Author(s): Suzuki Akihiro、Maeda Keiichi
  • Journal Title: The Astrophysical Journal Volume: 880 Issue: 2 Pages: 150-150
  • DOI: 10.3847/1538-4357/ab2ad3
  • Peer Reviewed
• [Journal Article] SN 2017czd: A Rapidly Evolving Supernova from a Weak Explosion of a Type IIb Supernova Progenitor (2019)
  • Author(s): Nakaoka, Tatsuya; Moriya, Takashi J.; Tanaka, Masaomi; Yamanaka, Masayuki; Kawabata, Koji S.; Maeda, Keiichi; Kawabata, Miho; Kawahara, Naoki; Itagaki, Koichi; Ouchi, Ryoma; Blinnikov, Sergei I.; Tominaga, Nozomu; Uemura, Makoto
  • Journal Title: The Astrophysical Journal Volume: 875 Issue: 1 Pages: 76-87
  • DOI: 10.3847/1538-4357/ab0dfe
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A hybrid envelope-stripping mechanism for massive stars from supernova nebular spectroscopy (2019)
  • Author(s): Fang Qiliang、Maeda Keiichi、Kuncarayakti Hanindyo、Sun Fengwu、Gal-Yam Avishay
  • Journal Title: Nature Astronomy Volume: 印刷中 Issue: 5 Pages: 434-439
  • DOI: 10.1038/s41550-019-0710-6
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Signatures of a jet cocoon in early spectra of a supernova associated with a γ-ray burst (2019)
  • Author(s): Izzo L.、de Ugarte Postigo A.、Maeda K.、et al.
  • Journal Title: Nature Volume: 565 Issue: 7739 Pages: 324-327
  • DOI: 10.1038/s41586-018-0826-3
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] High-energy Emission from Interacting Supernovae: New Constraints on Cosmic-Ray Acceleration in Dense Circumstellar Environments (2019)
  • Author(s): Murase Kohta、Franckowiak Anna、Maeda Keiichi、Margutti Raffaella、Beacom John F.
  • Journal Title: The Astrophysical Journal Volume: 874 Issue: 1 Pages: 80-80
  • DOI: 10.3847/1538-4357/ab0422
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Relativistic Supernova Ejecta Colliding with a Circumstellar Medium: An Application to the Low-luminosity GRB 171205A (2019)
  • Author(s): Suzuki Akihiro、Maeda Keiichi、Shigeyama Toshikazu
  • Journal Title: The Astrophysical Journal Volume: 870 Issue: 1 Pages: 38-38
  • DOI: 10.3847/1538-4357/aaef85
  • Peer Reviewed
• [Journal Article] Evolution of Magnetized White Dwarf Binaries to Type Ia Supernovae (2019)
  • Author(s): Ablimit Iminhaji、Maeda Keiichi
  • Journal Title: The Astrophysical Journal Volume: 871 Issue: 1 Pages: 31-31
  • DOI: 10.3847/1538-4357/aaf722
  • Peer Reviewed
• [Journal Article] Monte Carlo Population Synthesis on Massive Star Binaries: Astrophysical Implications for Gravitational-wave Sources (2018)
  • Author(s): Ablimit Iminhaji、Maeda Keiichi
  • Journal Title: The Astrophysical Journal Volume: 866 Issue: 2 Pages: 151-151
  • DOI: 10.3847/1538-4357/aae378
  • Peer Reviewed
• [Journal Article] Surface Radioactivity or Interactions? Multiple Origins of Early-excess Type Ia Supernovae and Associated Subclasses (2018)
  • Author(s): Jiang Ji-an、Doi Mamoru、Maeda Keiichi、Shigeyama Toshikazu
  • Journal Title: The Astrophysical Journal Volume: 865 Issue: 2 Pages: 149-149
  • DOI: 10.3847/1538-4357/aadb9a
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Origin of the Ha-like Structure in Nebular Spectra of Type IIb Supernovae (2018)
  • Author(s): Fang Qiliang、Maeda Keiichi
  • Journal Title: The Astrophysical Journal Volume: 864 Issue: 1 Pages: 47-47
  • DOI: 10.3847/1538-4357/aad096
  • Peer Reviewed
• [Journal Article] Type Ia Supernovae in the First Few Days: Signatures of Helium Detonation versus Interaction (2018)
  • Author(s): Maeda Keiichi、Jiang Ji-an、Shigeyama Toshikazu、Doi Mamoru
  • Journal Title: The Astrophysical Journal Volume: 861 Issue: 2 Pages: 78-78
  • DOI: 10.3847/1538-4357/aac8d8
  • Peer Reviewed / Open Access
• [Journal Article] Extended optical/NIR observations of Type Iax supernova 2014dt: Possible signatures of a bound remnant (2018)
  • Author(s): Kawabata, Miho; Kawabata, Koji S.; Maeda, Keiich; Yamanaka, Masayuki; Nakaoka, Tatsuya; Takaki, Katsutoshi; Fukushima, Daiki; Kojiguchi, Naoto; Masumoto, Kazunari; Matsumoto, Katsura; Akitaya, Hiroshi; Itoh, Ryosuke, et al.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 6 Pages: 111-132
  • DOI: 10.1093/pasj/psy116
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Observational Properties of Ultra Stripped Envelope Supernovae (2020)
  • Author(s): Keiichi Maeda
  • Organizer: GW Genesis: Third Annual Area Symposium
  • Int'l Joint Research
• [Presentation] spectral and polarization signals from stripped-envelope supernovae (2019)
  • Author(s): Keiichi Maeda
  • Organizer: TDLI Workshop on The Radiating Universe in the Era of Multi-Messenger Astrophysics
  • Int'l Joint Research / Invited
• [Presentation] Diversity of SNe Ia in the Rising Phase (2019)
  • Author(s): Keiichi Maeda
  • Organizer: Progenitors of Type Ia Supernovae
  • Int'l Joint Research / Invited
• [Presentation] Constraining the explosions and progenitors of type la supernovae (2019)
  • Author(s): Keiichi Maeda
  • Organizer: ESO 2019 Workshop: The extragalactic explosive Universe: the new era of transient surveys and data-driven discovery
  • Int'l Joint Research / Invited
• [Presentation] Properties of stripped envelope supernovae (2019)
  • Author(s): Keiichi Maeda
  • Organizer: YITP long-term workshop Multi-Messenger Astrophysics in the Gravitational Wave Era
  • Int'l Joint Research
• [Presentation] SN and Stellar Physics at Kyoto, and the Seimei Telescope (2019)
  • Author(s): Keiichi Maeda
  • Organizer: Time-domain astronomy workshop 2019
  • Int'l Joint Research / Invited
• [Presentation] SN 2017iuk associated with GRB171205A (2019)
  • Author(s): Keiichi Maeda
  • Organizer: Collaborative Meeting on Supernova Remnants between Japan and USA
  • Int'l Joint Research / Invited
• [Presentation] Optical/Radio View on Supernovae Surrounded by Dense Circumstellar Media: A Possible Counterpart of High Energy Transients (2019)
  • Author(s): Keiichi Maeda
  • Organizer: The extreme Universe viewed in very-high-energy gamma rays 2019
  • Int'l Joint Research / Invited
• [Presentation] 超新星からの高エネルギー放射 (2019)
  • Author(s): 前田啓一
  • Organizer: 第１８回高宇連研究会
  • Invited
• [Presentation] 超新星の電波観測 (2019)
  • Author(s): 前田啓一
  • Organizer: 突発・変動現象の電波フォローアップ
  • Invited
• [Presentation] Exploring the Phase Space of Extra-galactic Explosions (2019)
  • Author(s): Keiichi Maeda
  • Organizer: TDA-MMS 2019
  • Int'l Joint Research / Invited
• [Presentation] Diversities in Theories and Observations of Exploding White Dwarfs (2019)
  • Author(s): Keiichi Maeda
  • Organizer: 10th NAOJ DTA Symposium on Stellar deaths and their diversity
  • Int'l Joint Research / Invited
• [Presentation] Sub-Relativistic Expansion of Supernova Ejecta Associated with a Gamma-Ray Burst (2018)
  • Author(s): 前田啓一
  • Organizer: 理論天文学研究会2018
  • Invited
• [Presentation] Modeling supernova observables through radiation transfer simulations (2018)
  • Author(s): Keiichi Maeda
  • Organizer: second annual symposium of GW-genesis
  • Int'l Joint Research
• [Presentation] SN Ia progenitors and explosion mechanisms (2018)
  • Author(s): Keiichi Maeda
  • Organizer: Massive Stars and Supernovae
  • Int'l Joint Research / Invited
• [Presentation] Testing The Origin of Type Ia supernovae through Their Properties in The First Few Days (2018)
  • Author(s): Keiichi Maeda
  • Organizer: Chile-Japan Academic Forum 2018
  • Int'l Joint Research / Invited
• [Presentation] Stripped-Envelope Supernova in The Late Phase (2018)
  • Author(s): Keiichi Maeda
  • Organizer: Adventures in Astrophysics
  • Int'l Joint Research / Invited
• [Presentation] Supernova light curves (2018)
  • Author(s): Keiichi Maeda
  • Organizer: Frontiers of the Physics of Massive Stars: from the Main Sequence to LIGO
  • Int'l Joint Research / Invited
• [Presentation] Type Ia Supernova Triggered by He Detonation (2018)
  • Author(s): Keiichi Maeda
  • Organizer: The 15th Marcel Grossmann Meeting
  • Int'l Joint Research
• [Presentation] Radiation Transfer Simulations for Explosive Transients (2018)
  • Author(s): 前田啓一
  • Organizer: 「重力波物理学天文学・創世記」ワークショップ
• [Presentation] Progenitors and Explosion Mechanisms of Stripped-Envelope Supernovae (2018)
  • Author(s): Keiichi Maeda
  • Organizer: Shocking Supernovae: surrounding interactions and unusual events
  • Int'l Joint Research / Invited
• [Presentation] Progenitors, Mass Loss, and Shock Breakout of Supernovae (2018)
  • Author(s): Keiichi Maeda
  • Organizer: Jet and Shock Breakout in Cosmic Transients
  • Int'l Joint Research / Invited
• [Remarks] 宇宙で最も明るい爆発現象の謎を解明
  • URL: http://www.kyoto-u.ac.jp/ja/research/research_results/2019/200124_2.html
• [Remarks] Origins of the 'Superluminous Supernovae'
  • URL: https://www.kyoto-u.ac.jp/en/research/research_results/2019/200124_2.html
• [Remarks] 宇宙で最も明るい爆発現象の謎が明らかに
  • URL: https://www.hiroshima-u.ac.jp/news/55934
• [Remarks] Progress in understanding the brightest...
  • URL: https://www.mpa-garching.mpg.de/797272/news20200124
• [Remarks] 極超新星に付随する超高速成分を発見 －極超新星が光速ジェットにより引き起こされることを実証－
  • URL: http://www.kyoto-u.ac.jp/ja/research/research_results/2018/190117_1.html
• [Remarks] 重い星の終末期の外層放出機構を解明 －いつ、どのように星は減量するのか－
  • URL: http://www.kyoto-u.ac.jp/ja/research/research_results/2018/190305_1.html
• [Remarks] A hybrid mechanism works for massive stars...
  • URL: https://astronomycommunity.nature.com/users/233280-keiichi-maeda/posts/44889-a-hybrid-mechanism-works-for-massive-stars-in-losing-their-weight