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![]() |
刊名 | ASTROPHYSICAL JOURNAL
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出版日期 | 2022-07-01 |
卷号 | 933期号:1 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/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; |
推荐引用方式 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). |
入库方式: OAI收割
来源:云南天文台
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