中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Revisit the Rate of Tidal Disruption Events: The Role of the Partial Tidal Disruption Event

文献类型:期刊论文

作者Zhong SY(钟诗言)6; Li, Shuo5; Berczik, Peter2,3,4; Spurzem, Rainer1,4
刊名ASTROPHYSICAL JOURNAL
出版日期2022-07-01
卷号933期号:1
ISSN号0004-637X
DOI10.3847/1538-4357/ac71ad
产权排序第1完成单位
文献子类Article
英文摘要

Tidal disruption of stars in dense nuclear star clusters containing supermassive central black holes (SMBH) is modeled by high-accuracy direct N-body simulation. Stars getting too close to the SMBH are tidally disrupted, and a tidal disruption event (TDE) happens. The TDEs probe the properties of SMBHs, their accretion disks, and the surrounding nuclear stellar cluster. In this paper, we compare the rates of full tidal disruption events (FTDEs) with partial tidal disruption events (PTDEs). Since a PTDE does not destroy the star, a leftover object emerges; we use the term leftover star for it. Two novel effects occur in the simulation: (1) variation of the leftover star's mass and radius and (2) variation of the leftover star's orbital energy. After switching on these two effects in our simulation, the number of FTDEs is reduced by roughly 28%, and the reduction is mostly due to the ejection of the leftover stars from PTDEs originally coming from a relatively large distance. The number of PTDEs is about 75% higher than the simple estimation given by Stone et al., and the enhancement is mainly due to the multiple PTDEs produced by the leftover stars residing in the diffusive regime. We compute the peak mass fallback rate for the PTDEs and FTDEs recorded in the simulation and find that 58% of the PTDEs have a peak mass fallback rate exceeding the Eddington limit, and the number of super-Eddington PTDEs is 2.3 times the number of super-Eddington FTDEs.

学科主题天文学 ; 天体物理学 ; 高能天体物理学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词CENTRAL BLACK-HOLES ; MONTE-CARLO SIMULATIONS ; STAR-CLUSTERS ; GALACTIC NUCLEI ; EVOLUTION ; NBODY6++GPU ; INTEGRATION ; ACCRETION ; MODEL
资助项目National Natural Science Foundation of China[NSFC 11603067] ; Yunnan Observatories, Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (Pilot B) Multi-wavelength gravitational wave universe of the Chinese Academy of Sciences[XDB23040100] ; Yunnan Academician Workstation of Wang Jingxiu[202005AF150025] ; Volkswagen Foundation in Germany[97778] ; Volkswagen Foundation[9B870] ; Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan[AP08856184] ; Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan[AP08856149] ; Ministry of Education and Science of Ukraine[M/32-23.05.2022] ; National Academy of Sciences of Ukraine[13.2021.MM] ; K.C.Wong Education Foundation ; SinoGerman Center (DFG/NSFC)[GZ1289] ; computing and network department of NAOC
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000821289800001
出版者IOP Publishing Ltd
资助机构National Natural Science Foundation of China[NSFC 11603067] ; Yunnan Observatories, Chinese Academy of Sciences (CAS) ; Strategic Priority Research Program (Pilot B) Multi-wavelength gravitational wave universe of the Chinese Academy of Sciences[XDB23040100] ; Yunnan Academician Workstation of Wang Jingxiu[202005AF150025] ; Volkswagen Foundation in Germany[97778] ; Volkswagen Foundation[9B870] ; Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan[AP08856184, AP08856149] ; Ministry of Education and Science of Ukraine[M/32-23.05.2022] ; National Academy of Sciences of Ukraine[13.2021.MM] ; K.C.Wong Education Foundation ; SinoGerman Center (DFG/NSFC)[GZ1289] ; computing and network department of NAOC
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/25286]  
专题云南天文台_高能天体物理研究组
通讯作者Zhong SY(钟诗言)
作者单位1.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing, People's Republic of China
2.Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Eötvös Loránd Research Network (ELKH), MTA Centre of Excellence, Konkoly Thege Miklós út 15-17, 1121 Budapest, Hungary;
3.Main Astronomical Observatory, National Academy of Sciences of Ukraine, 27 Akademika Zabolotnoho St., 03143 Kyiv, Ukraine;
4.Astronomisches Rechen-Institut, Zentrum für Astronomie, University of Heidelberg, Mönchhofstrasse 12-14, D-69120, Heidelberg, Germany;
5.National Astronomical Observatories of China, Chinese Academy of Sciences, 20A Datun Rd., Chaoyang District, 100012, Beijing, People's Republic of China;
6.Yunnan Observatories, Chinese Academy of Sciences, 396 Yang-Fang-Wang, Guandu District, 650216, Kunming, Yunnan, People's Republic of China;
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GB/T 7714
Zhong SY,Li, Shuo,Berczik, Peter,et al. Revisit the Rate of Tidal Disruption Events: The Role of the Partial Tidal Disruption Event[J]. ASTROPHYSICAL JOURNAL,2022,933(1).
APA Zhong SY,Li, Shuo,Berczik, Peter,&Spurzem, Rainer.(2022).Revisit the Rate of Tidal Disruption Events: The Role of the Partial Tidal Disruption Event.ASTROPHYSICAL JOURNAL,933(1).
MLA Zhong SY,et al."Revisit the Rate of Tidal Disruption Events: The Role of the Partial Tidal Disruption Event".ASTROPHYSICAL JOURNAL 933.1(2022).

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来源:云南天文台

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