Unveiling the Nature of Type Ia Supernovae with Early-phase Photometry by Subaru/HSC

2021 年度 実績報告書

• 研究課題/領域番号: 19K23456
• 研究機関: 東京大学
• 研究代表者: 姜 継安 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (00846503)
• 研究期間 (年度): 2019-08-30 – 2022-03-31
• キーワード: Supernova / Observation / Survey / Transient / Time-domain

研究実績の概要

A series of optical observations were carried out with Japanese wide-field survey facilities (e.g., Subaru/HSC, Kiso/Tomo-e) in FY2021. A dozen of early-phase supernovae have been discovered and follow-up observations have been carried out via international collaborations successfully.

With a promising number of early-phase Type Ia supernovae discovered in FY2021, the long-standing progenitor and explosion issues of Type Ia supernovae can be further investigated. Moreover, interesting transients other than early-phase supernovae have also been discovered. Scientific papers focusing on different transients were published, submitted or in preparation in FY2021.

研究成果

• [雑誌論文] A repeating fast radio burst associated with a persistent radio source (2022)
  • 著者名/発表者名: C.-H. Niu, K. Aggarwal, D. Li, X. Zhang, S. Chatterjee, C.-W. Tsai, W. Yu, C. J. Law, S. Burke-Spolaor, J. M. Cordes, Y.-K. Zhang, S. Ocker, J.-M. Yao, P. Wang, Y. Feng, Y. Niino, C. Bochenek, M. Cruces, L. Connor, J.-A. Jiang, et al.
  • 雑誌名: Nature (in press) 巻: - ページ: -
  • 査読あり / 国際共著
• [雑誌論文] Discovery of the Fastest Early Optical Emission from Overluminous SN Ia 2020hvf: A Thermonuclear Explosion within a Dense Circumstellar Environment (2021)
  • 著者名/発表者名: Jiang Ji-an, Maeda Keiichi, Kawabata Miho, Doi Mamoru, Shigeyama Toshikazu, Tanaka Masaomi, Tominaga Nozomu, Nomoto Ken’ichi, Niino Yuu, Sako Shigeyuki, Ohsawa Ryou, Schramm Malte, Yamanaka Masayuki, Kobayashi Naoto, Takahashi Hidenori, et al.
  • 雑誌名: The Astrophysical Journal Letters 巻: 923 ページ: L8～L8
  • DOI: 10.3847/2041-8213/ac375f
  • 査読あり / オープンアクセス
• [雑誌論文] Calcium-rich Transient SN 2019ehk in a Star-forming Environment: Yet Another Candidate for a Precursor of a Double Neutron-star Binary (2021)
  • 著者名/発表者名: Nakaoka Tatsuya, Maeda Keiichi, Yamanaka Masayuki, Tanaka Masaomi, Kawabata Miho, Moriya Takashi J., Kawabata Koji S., Tominaga Nozomu, Takagi Kengo, Imazato Fumiya, Morokuma Tomoki, Sako Shigeyuki, Ohsawa Ryou, Nagao Takashi, Jiang Ji-an, et al.
  • 雑誌名: The Astrophysical Journal 巻: 912 ページ: 30～30
  • DOI: 10.3847/1538-4357/abe765
  • 査読あり / オープンアクセス
• [学会発表] Catching the Earliest Optical Emission of SN Ia 2020hvf with the Tomo-e Gozen Camera (2021)
  • 著者名/発表者名: Ji-an Jiang
  • 学会等名: 木曽シュミットシンポジウム 2021