超新星から明らかにする大質量星の爆発直前の未知の質量放出機構

2020 Fiscal Year Research-status Report

• Project/Area Number: 18K13585
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: 守屋 尭 国立天文台, 科学研究部, 助教 (90779547)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Keywords: 超新星爆発

Outline of Annual Research Achievements

前年度までの研究により推定された大質量星の爆発直前の大規模質量放出の結果形成される星周物質の形状や密度などは、その発生メカニズムによって決定される。この爆発直前の大質量星の星周物質情報をもとに、爆発直前の大規模質量放出の発生メカニズムに大まかな目処をつけた。多くの場合は形成される星周物質が大まかに球対称に近い形状を持つと推定されたことから、球対称の質量放出を起こすことのできる、重力崩壊を起こす大質量星の中心付近で大規模質量放出を誘発するメカニズムが存在すると考えられる。特に爆発直前の大規模質量放出は爆発直前に恒星中心付近で引き起こされる非常に活発な元素合成と関連している可能性が高い。重力崩壊直前の非常に活発な元素合成により恒星の中心付近で強い対流が発生するため、この対流によって誘発される音波が大質量星の表面まで短時間に伝わることによって爆発直前の大質量星表面での大規模質量放出が誘発されている可能性がある。このような大規模質量放出メカニズムは大質量星中心付近で非常に活発な元素合成が起こることで働くため、爆発直前にのみ活性化されると考えられる。しかし、他にも大質量星の質量放出率を一時的に上昇させるメカニズムは存在する。例えば大質量赤色超巨星の表面は不安定になり得るため、この表面不安定性によって爆発前に一時的に大規模な質量放出が起こる可能性もある。今後、爆発直前以外に起こる大規模質量放出の大質量星進化への影響を精査する。

Current Status of Research Progress

3: Progress in research has been slightly delayed.

Reason

新型コロナウイルス感染症への対応のため、本研究に従事する時間が当初の予定よりも取れなかった。

Strategy for Future Research Activity

短い時間スケールで起きる大質量星の大規模質量放出機構が大質量星の進化の終末期だけに限らず、他の進化段階でも起こり得ないかどうかを検証し、短い時間スケールで起きる大質量星の大規模質量放出の恒星進化全体への影響を総合的に考察する。

Causes of Carryover

新型コロナウイルス感染症のため、年度内に共同研究のため招聘予定であった研究者を招聘できなかった。また、年度内に予定していた国際研究会への参加や海外研究機関への研究滞在もできなかった。次年度後半に海外研究機関への滞在や研究者の招聘を行う予定である。

Research Products

• [Int'l Joint Research] KU Leuven(ベルギー)
  • Country Name: BELGIUM
  • Counterpart Institution: KU Leuven
• [Int'l Joint Research] ITEP(ロシア連邦)
  • Country Name: RUSSIA FEDERATION
  • Counterpart Institution: ITEP
• [Int'l Joint Research] Aarhus University(デンマーク)
  • Country Name: DENMARK
  • Counterpart Institution: Aarhus University
• [Int'l Joint Research] Universidad Andres Bello(チリ)
  • Country Name: CHILE
  • Counterpart Institution: Universidad Andres Bello
• [Int'l Joint Research] Swinburne University of Technology(オーストラリア)
  • Country Name: AUSTRALIA
  • Counterpart Institution: Swinburne University of Technology
• [Int'l Joint Research]
  • # of Other Countries: 2
• [Journal Article] Extremely Energetic Supernova Explosions Embedded in a Massive Circumstellar Medium: The Case of SN 2016aps (2021)
  • Author(s): Suzuki Akihiro、Nicholl Matt、Moriya Takashi J.、Takiwaki Tomoya
  • Journal Title: The Astrophysical Journal Volume: 908 Pages: 99～99
  • DOI: 10.3847/1538-4357/abd6ce
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Constraints on the Rate of Supernovae Lasting for More Than a Year from Subaru/Hyper Suprime-Cam (2021)
  • Author(s): Moriya Takashi J.、Jiang Ji-an、Yasuda Naoki、Kokubo Mitsuru、Kawana Kojiro、Maeda Keiichi、Pan Yen-Chen、Quimby Robert M.、Suzuki Nao、Takahashi Ichiro、Tanaka Masaomi、Tominaga Nozomu、Nomoto Ken’ichi、Cooke Jeff、Galbany Lluis、Gonzalez-Gaitan Santiago、Lee Chien-Hsiu、Pignata Giuliano
  • Journal Title: The Astrophysical Journal Volume: 908 Pages: 249～249
  • DOI: 10.3847/1538-4357/abcfc0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Type IIn supernova light-curve properties measured from an untargeted survey sample (2020)
  • Author(s): Nyholm A.、Sollerman J.、Tartaglia L.、Taddia F.、Fremling C.、Blagorodnova N.、Filippenko A. V.、Gal-Yam A.、Howell D. A.、Karamehmetoglu E.、Kulkarni S. R.、Laher R.、Leloudas G.、Masci F.、Kasliwal M. M.、Mora K.、Moriya T. J.、Ofek E. O.、Papadogiannakis S.、Quimby R.、Rebbapragada U.、Schulze S.
  • Journal Title: Astronomy & Astrophysics Volume: 637 Pages: A73～A73
  • DOI: 10.1051/0004-6361/201936097
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Rapidly Evolving Transients from the Hyper Suprime-Cam SSP Transient Survey (2020)
  • Author(s): Tampo Yusuke、Tanaka Masaomi、Maeda Keiichi、Yasuda Naoki、Tominaga Nozomu、Jiang Ji-an、Moriya Takashi J.、Morokuma Tomoki、Suzuki Nao、Takahashi Ichiro、Kokubo Mitsuru、Kawana Kojiro
  • Journal Title: The Astrophysical Journal Volume: 894 Pages: 27～27
  • DOI: 10.3847/1538-4357/ab7ccc
  • Peer Reviewed / Open Access
• [Journal Article] Late-phase Spectropolarimetric Observations of Superluminous Supernova SN 2017egm to Probe the Geometry of the Inner Ejecta (2020)
  • Author(s): Saito Sei、Tanaka Masaomi、Moriya Takashi J.、Bulla Mattia、Leloudas Giorgos、Inserra Cosimo、Lee Chien-Hsiu、Kawabata Koji S.、Mazzali Paolo
  • Journal Title: The Astrophysical Journal Volume: 894 Pages: 154～154
  • DOI: 10.3847/1538-4357/ab873b
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Carnegie Supernova Project II. The shock wave revealed through the fog: The strongly interacting Type IIn SN 2013L (2020)
  • Author(s): Taddia F.、Stritzinger M. D.、Fransson C.、Brown P. J.、Contreras C.、Holmbo S.、Moriya T. J.、Phillips M. M.、Sollerman J.、Suntzeff N. B.、Ashall C.、Burns C. R.、Busta L.、Campillay A.、Castellon S.、Corco C.、Di Mille F.、Gall C.、Gonzalez C.、Hsiao E. Y.、Morrell N.、Nyholm A.、Simon J. D.、Seron J.
  • Journal Title: Astronomy & Astrophysics Volume: 638 Pages: A92～A92
  • DOI: 10.1051/0004-6361/201936654
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Luminous Type II supernovae for their low expansion velocities (2020)
  • Author(s): Rodriguez O、Pignata G、Anderson J P、Moriya T J、Clocchiatti A、Forster F、Prieto J L、Phillips M M、Burns C R、Contreras C、Folatelli G、Gutierrez C P、Hamuy M、Morrell N I、Stritzinger M D、Suntzeff N B、Benetti S、Cappellaro E、Elias-Rosa N、Pastorello A、Turatto M、Maza J、Antezana R、Cartier R、など
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 494 Pages: 5882～5901
  • DOI: 10.1093/mnras/staa1133
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Carnegie Supernova Project II. Observations of the intermediate-luminosity red transient SNhunt120 (2020)
  • Author(s): Stritzinger M. D.、Taddia F.、Fraser M.、Tauris T. M.、Suntzeff N. B.、Contreras C.、Drybye S.、Galbany L.、Holmbo S.、Morrell N.、Phillips M. M.、Prieto J. L.、Anais J.、Ashall C.、Baron E.、Burns C. R.、Hoeflich P.、Hsiao E. Y.、Karamehmetoglu E.、Moriya T. J.、Botticella M. T.、など
  • Journal Title: Astronomy & Astrophysics Volume: 639 Pages: A103～A103
  • DOI: 10.1051/0004-6361/202038018
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Carnegie Supernova Project II. Observations of the luminous red nova AT 2014ej (2020)
  • Author(s): Stritzinger M. D.、Taddia F.、Fraser M.、Tauris T. M.、Contreras C.、Drybye S.、Galbany L.、Holmbo S.、Morrell N.、Pastorello A.、Phillips M. M.、Pignata G.、Tartaglia L.、Suntzeff N. B.、Anais J.、Ashall C.、Baron E.、Burns C. R.、Hoeflich P.、Hsiao E. Y.、Karamehmetoglu E.、Moriya T. J.、Bock G.、など
  • Journal Title: Astronomy & Astrophysics Volume: 639 Pages: A104～A104
  • DOI: 10.1051/0004-6361/202038019
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The impact of stellar rotation on the black hole mass-gap from pair-instability supernovae (2020)
  • Author(s): Marchant Pablo、Moriya Takashi J.
  • Journal Title: Astronomy & Astrophysics Volume: 640 Pages: L18～L18
  • DOI: 10.1051/0004-6361/202038902
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A Systematic Study on the Rise Time - Peak Luminosity Relation for Bright Optical Transients Powered by Wind Shock Breakout (2020)
  • Author(s): Suzuki Akihiro、Moriya Takashi J.、Takiwaki Tomoya
  • Journal Title: The Astrophysical Journal Volume: 899 Pages: 56～56
  • DOI: 10.3847/1538-4357/aba0ba
  • Peer Reviewed / Open Access
• [Journal Article] The Carnegie Supernova Project II. Observations of SN 2014ab possibly revealing a 2010jl-like SN IIn with pre-existing dust (2020)
  • Author(s): Moriya T. J.、Stritzinger M. D.、Taddia F.、Morrell N.、Suntzeff N. B.、Contreras C.、Gall C.、Hjorth J.、Ashall C.、Burns C. R.、Busta L.、Campillay A.、Castellon S.、Corco C.、Davis S.、Galbany L.、Gonzalez C.、Holmbo S.、Hsiao E. Y.、Maund J. R.、Phillips M. M.
  • Journal Title: Astronomy & Astrophysics Volume: 641 Pages: A148～A148
  • DOI: 10.1051/0004-6361/202038118
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Luminous supernovae associated with ultra-long gamma-ray bursts from hydrogen-free progenitors extended by pulsational pair-instability (2020)
  • Author(s): Moriya Takashi J.、Marchant Pablo、Blinnikov Sergei I.
  • Journal Title: Astronomy & Astrophysics Volume: 641 Pages: L10～L10
  • DOI: 10.1051/0004-6361/202038903
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Carnegie Supernova Project II: The Slowest Rising Type Ia Supernova LSQ14fmg and Clues to the Origin of Super-Chandrasekhar/03fg-like Events (2020)
  • Author(s): Hsiao E、Hoeflich P、Ashall C.、Lu J、Contreras C、Burns C、Phillips M、Galbany L、Anderson J、Baltay C、Baron E、Castellon S、Davis S、Freedman L、Gall C、Gonzalez C、Graham M、Hamuy M、Holoien T、Karamehmetoglu E、Krisciunas K、Kumar S、Kuncarayakti H、Morrell N、Moriya TJ、Nugent P、Perlmutter S、など
  • Journal Title: The Astrophysical Journal Volume: 900 Pages: 140～140
  • DOI: 10.3847/1538-4357/abaf4c
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Systematic investigation of the effect of 56Ni mixing in the early photospheric velocity evolution of stripped-envelope supernovae (2020)
  • Author(s): Moriya Takashi J、Suzuki Akihiro、Takiwaki Tomoya、Pan Yen-Chen、Blinnikov Sergei I
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 497 Pages: 1619～1626
  • DOI: 10.1093/mnras/staa2060
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] PTF11rka: an interacting supernova at the crossroads of stripped-envelope and H-poor superluminous stellar core collapses (2020)
  • Author(s): Pian E、Mazzali P A、Moriya T J、Rubin A、Gal-Yam A、Arcavi I、Ben-Ami S、Blagorodnova N、Bufano F、Filippenko A V、Kasliwal M、Kulkarni S R、Lunnan R、Manulis I、Matheson T、Nugent P E、Ofek E、Perley D A、Prentice S J、Yaron O
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 497 Pages: 3542～3556
  • DOI: 10.1093/mnras/staa2191
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Cosmic rates of black hole mergers and pair-instability supernovae from chemically homogeneous binary evolution (2020)
  • Author(s): du Buisson L、Marchant P、Podsiadlowski Ph、Kobayashi C、Abdalla F B、Taylor P、Mandel I、de Mink S E、Moriya T J、Langer N
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 499 Pages: 5941～5959
  • DOI: 10.1093/mnras/staa3225
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] G-REXによる高赤方偏移超新星探査 (2021)
  • Author(s): 守屋尭
  • Organizer: G-REX (+中間赤外高分散分光) サイエンス検討会
  • Invited
• [Presentation] Impact of stellar rotation on the black-hole mass gap from pair-instability supernovae (2020)
  • Author(s): 守屋尭
  • Organizer: 初代星初代銀河研究会2020
  • Invited