A superluminous supernova lightened by collisions with pulsational pair-instability shells | |
Lin, Weili26; Wang, Xiaofeng24,25,26; Yan, Lin23; Gal-Yam, Avishay22; Mo, Jun26; Brink, Thomas G.21; Filippenko, Alexei V.21; Xiang, Danfeng26; Lunnan, Ragnhild20; Zheng, Weikang21 | |
刊名 | NATURE ASTRONOMY |
2023-05 | |
ISSN号 | 2397-3366 |
DOI | 10.1038/s41550-023-01957-3 |
产权排序 | 第16完成单位 |
文献子类 | Article; Early Access |
英文摘要 | Superluminous supernovae are among the most energetic stellar explosions in the Universe, but their energy sources remain an open question. Here we present long-term observations of one of the closest examples of the hydrogen-poor superluminous supernovae subclass SLSNe-I, supernova SN 2017egm, revealing the most complicated known luminosity evolution of SLSNe-I. Three distinct post-peak bumps were recorded in its light curve collected at about 100-350 days after maximum brightness, challenging current popular power models such as magnetar, fallback accretion, and interaction between ejecta and a circumstellar shell. However, the complex light curve can be well modelled by successive interactions with multiple circumstellar shells with a total mass of about 6.8-7.7 M-circle dot. In this scenario, large energy deposition from interaction-induced reverse shocks results in ionization of neutral oxygen in the supernova ejecta and hence a much lower nebular-phase line ratio of [O i] lambda 6,300/([Ca II] + [O II]) lambda 7,300 (similar to 0.2) compared with that derived for other superluminous and normal stripped-envelope supernovae. The pre-existing multiple shells indicate that the progenitor of SN 2017egm experienced pulsational mass ejections triggered by pair instability within 2 years before explosion, in robust agreement with theoretical predictions for a pre-pulsation helium-core mass of 48-51 M-circle dot. |
学科主题 | 天文学 ; 恒星与银河系 |
URL标识 | 查看原文 |
出版地 | HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY |
资助项目 | Swift ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; Center for Astronomical Mega-Science, CAS ; National Aeronautics and Space Administration ; NASA ; W. M. Keck Foundation ; Heising-Simons Foundation ; University of California Observatories - National Natural Science Foundation of China[12288102] ; University of California Observatories - National Natural Science Foundation of China[12033003] ; Scholar Program of Beijing Academy of Science and Technology[DZ:BS202002] ; Tencent Xplorer Prize ; European Union via ERC[725161] ; ISF GW excellence centre ; GIF grants ; Schwartz/Reisman Collaborative Science Program ; Norman E. Alexander Family Foundation ULTRASAT Data Center Fund ; Minerva and Yeda-Sela ; Miller Institute for Basic Research in Science ; Christopher R. Redlich Fund - European Union (ERC)[CET-3PO] ; Christopher R. Redlich Fund - European Union (ERC)[101042610] ; National Natural Science Foundation of China[12103050] ; Advanced Talents Incubation Program of the Hebei University ; Midwest Universities Comprehensive Strength Promotion project ; National Program on Key Research and Development Project of China[2021YFA0718500] |
WOS关键词 | LOW-RESOLUTION ; MASSIVE STARS ; CURVES ; SYSTEM |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | NATURE PORTFOLIO |
WOS记录号 | WOS:000979984200002 |
资助机构 | Swift ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; Center for Astronomical Mega-Science, CAS ; National Aeronautics and Space Administration ; NASA ; W. M. Keck Foundation ; Heising-Simons Foundation ; University of California Observatories - National Natural Science Foundation of China[12288102, 12033003] ; Scholar Program of Beijing Academy of Science and Technology[DZ:BS202002] ; Tencent Xplorer Prize ; European Union via ERC[725161] ; ISF GW excellence centre ; GIF grants ; Schwartz/Reisman Collaborative Science Program ; Norman E. Alexander Family Foundation ULTRASAT Data Center Fund ; Minerva and Yeda-Sela ; Miller Institute for Basic Research in Science ; Christopher R. Redlich Fund - European Union (ERC)[CET-3PO, 101042610] ; National Natural Science Foundation of China[12103050] ; Advanced Talents Incubation Program of the Hebei University ; Midwest Universities Comprehensive Strength Promotion project ; National Program on Key Research and Development Project of China[2021YFA0718500] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26023] |
专题 | 云南天文台_丽江天文观测站(南方基地) |
通讯作者 | Wang, Xiaofeng |
作者单位 | 1.Astroparticle Physics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China 2.Research Center for Computational Physics of Hebei Province, Baoding, China; 3.Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province, Hebei University, Baoding, China; 4.Department of Physics, College of Physical Sciences and Technology, Hebei University, Baoding, China; 5.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, China; 6.CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China; 7.Department of Astronomy, China West Normal University, Nanchong, China; 8.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Chaoyang District, China; 9.Department of Astronomy, Beijing Normal University, Beijing, China; 10.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, China; |
推荐引用方式 GB/T 7714 | Lin, Weili,Wang, Xiaofeng,Yan, Lin,et al. A superluminous supernova lightened by collisions with pulsational pair-instability shells[J]. NATURE ASTRONOMY,2023. |
APA | Lin, Weili.,Wang, Xiaofeng.,Yan, Lin.,Gal-Yam, Avishay.,Mo, Jun.,...&Wang, Lingjun.(2023).A superluminous supernova lightened by collisions with pulsational pair-instability shells.NATURE ASTRONOMY. |
MLA | Lin, Weili,et al."A superluminous supernova lightened by collisions with pulsational pair-instability shells".NATURE ASTRONOMY (2023). |
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