マグネター駆動型超新星爆発の研究

• 研究課題/領域番号: 18J21778
• 研究種目: 特別研究員奨励費
• 配分区分: 補助金
• 応募区分: 国内
• 研究分野: 素粒子・原子核・宇宙線・宇宙物理(理論)
• 研究機関: 東京大学
• 研究代表者: OMAND CONOR 東京大学, 理学系研究科, 特別研究員(DC1)
• 研究期間 (年度): 2018-04-25 – 2021-03-31
• 研究課題ステータス: 完了 (2020年度)
• 配分額: 2,800千円 (直接経費: 2,800千円); 2020年度: 900千円 (直接経費: 900千円); 2019年度: 900千円 (直接経費: 900千円); 2018年度: 1,000千円 (直接経費: 1,000千円)
• キーワード: Magnetar / Pulsar / Pulsar Wind Nebula / Radio Emission / Supernova / Superluminous Supernova / Fast Radio Burst / Spectroscopy / Spectra / Dust / Radio / Submillimetre / Non-thermal emission

研究実績の概要

I joined a new collaboration which was doing a large radio survey of superluminous supernova (SLSN) remanants. I wrote a comparison between my method and their method of determining pulsar parameters from optical light curves, and altered my code to generate radio light curves in a consistent way. We published the survey results and pulsar constraints, and found that the model, with the assumptions we are currently using, is inconsistent with several supernovae.
I continued working on code for determining optical spectra, but decided to collaborate with a group that has already developed similar code. We are modeling these spectra now.
I wrote my PhD thesis and graduated.

現在までの達成度 (段落)

令和2年度が最終年度であるため、記入しない。

今後の研究の推進方策

令和2年度が最終年度であるため、記入しない。

研究成果

• [雑誌論文] Late-Time Radio and Millimeter Observations of Superluminous Supernovae and Long Gamma Ray Bursts: Implications for Obscured Star Formation, Central Engines, and Fast Radio Bursts (2021)
  • 著者名/発表者名: Eftekhari, T.; Margalit, B.; Omand, C. M. B.; Berger, E.; Blanchard, P. K.; Demorest, P.; Metzger, B. D.; Murase, K.; Nicholl, M.; Villar, V. A.; Williams, P. K. G.; Alexander, K. D.; Chatterjee, S.; Coppejans, D. L.; Cordes, J. M.; Gomez, S.; Hosseinzadeh, G.; Hsu, B.; Kashiyama, K.; Margutti, R. Yin, Y.
  • 雑誌名: Astrophysical Journal 巻: (Accepted)
  • 査読あり / 国際共著
• [雑誌論文] A Search for Late-time Radio Emission and Fast Radio Bursts from Superluminous Supernovae (2019)
  • 著者名/発表者名: Law C. J.、Omand C. M. B.、Kashiyama K.、Murase K.、Bower G. C.、Aggarwal K.、Burke-Spolaor S.、Butler B. J.、Demorest P.、Lazio T. J. W.、Linford J.、Tendulkar S. P.、Rupen M. P.
  • 雑誌名: The Astrophysical Journal 巻: 886 号: 1 ページ: 24-24
  • DOI: 10.3847/1538-4357/ab4adb
  • 査読あり / 国際共著
• [雑誌論文] Dust formation in embryonic pulsar-aided supernova remnants (2019)
  • 著者名/発表者名: Omand Conor M B、Kashiyama Kazumi、Murase Kohta
  • 雑誌名: Monthly Notices of the Royal Astronomical Society 巻: 484 号: 4 ページ: 5468-5483
  • DOI: 10.1093/mnras/stz371
  • 査読あり / 国際共著
• [学会発表] Broadband Constraints on the Pulsar-Driven Supernova Model (2019)
  • 著者名/発表者名: Omand Conor
  • 学会等名: Invited Seminar - Ochanomizu University
  • 招待講演
• [学会発表] Broadband Constraints on the Pulsar-Driven Supernova Model (2019)
  • 著者名/発表者名: Omand Conor
  • 学会等名: Invited Seminar - RIKEN
  • 招待講演
• [学会発表] Radio and Submillimetre Constraints on the Pulsar-Driven Supernova Model (2019)
  • 著者名/発表者名: Omand Conor
  • 学会等名: Multimessenger Astrophysics in the Gravitational Wave Era
• [学会発表] Radio and Submillimetre Constraints on the Pulsar-Driven Supernova Model (2019)
  • 著者名/発表者名: Omand Conor
  • 学会等名: Autumn Annual Meeting of the Astronomical Society of Japan
• [学会発表] Radio and Submillimetre Constraints on the Pulsar-Driven Supernova Model (2019)
  • 著者名/発表者名: Omand Conor
  • 学会等名: RESCEU Summer School
• [学会発表] Radio and Submillimetre Constraints on the Pulsar-Driven Supernova Model (2019)
  • 著者名/発表者名: Omand Conor
  • 学会等名: High Energy Astrophysics Japan Israel Workshop
• [学会発表] Radio and Submillimetre Constraints on the Pulsar-Driven Supernova Model (2019)
  • 著者名/発表者名: Omand Conor
  • 学会等名: Fifty-One Ergs
• [学会発表] Dust Formation and Emission from Pulsar-Aided Supernova Remnants (2019)
  • 著者名/発表者名: Conor Omand
  • 学会等名: 10th DTA Symposium
• [学会発表] Non-thermal Signals from Embryonic Supernova Remnants (2018)
  • 著者名/発表者名: Conor Omand
  • 学会等名: Annual Japanese Theoretical Astrophysics Symposium
• [学会発表] Non-thermal Signals from Embryonic Supernova Remnants (2018)
  • 著者名/発表者名: Conor Omand
  • 学会等名: Annual Japanese High-Energy Astrophyics Conference,
• [学会発表] Dust Formation and Emission from Pulsar-Aided Supernovae (2018)
  • 著者名/発表者名: Conor Omand
  • 学会等名: RESCEU Summer School
• [学会発表] Dust Formation and Emission from Pulsar-Aided Supernovae (2018)
  • 著者名/発表者名: Conor Omand
  • 学会等名: Jets and Shock Breakouts in Cosmic Transients