SUPER MASSIVE BLACK HOLE IN GALACTIC NUCLEI WITH TIDAL DISRUPTION OF STARS
文献类型：期刊论文
| 作者 | Zhong, Shiyan1 ; Berczik, Peter1,2,3; Spurzem, Rainer1,4
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2014-09-10 |
| 卷号 | 792期号:2 |
| 关键词 | galaxies: kinematics and dynamics galaxies: nuclei methods: numerical quasars: supermassive black holes stars: kinematics and dynamics |
| 英文摘要 | Tidal disruption of stars by super massive central black holes from dense star clusters is modeled by high-accuracy direct N-body simulation. The time evolution of the stellar tidal disruption rate, the effect of tidal disruption on the stellar density profile, and, for the first time, the detailed origin of tidally disrupted stars are carefully examined and compared with classic papers in the field. Up to 128k particles are used in simulation to model the star cluster around a super massive black hole, and we use the particle number and the tidal radius of the black hole as free parameters for a scaling analysis. The transition from full to empty loss-cone is analyzed in our data, and the tidal disruption rate scales with the particle number, N, in the expected way for both cases. For the first time in numerical simulations (under certain conditions) we can support the concept of a critical radius of Frank & Rees, which claims that most stars are tidally accreted on highly eccentric orbits originating from regions far outside the tidal radius. Due to the consumption of stars moving on radial orbits, a velocity anisotropy is found inside the cluster. Finally we estimate the real galactic center based on our simulation results and the scaling analysis. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000341172200055 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6512]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ China, Beijing 100012, Peoples R China 2.Heidelberg Univ, Zentrum Astron, Astron Rechen Inst, D-69120 Heidelberg, Germany 3.Natl Acad Sci Ukraine, Main Astron Observ, UA-03680 Kiev, Ukraine 4.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhong, Shiyan,Berczik, Peter,Spurzem, Rainer. SUPER MASSIVE BLACK HOLE IN GALACTIC NUCLEI WITH TIDAL DISRUPTION OF STARS[J]. ASTROPHYSICAL JOURNAL,2014,792(2). |
| APA | Zhong, Shiyan,Berczik, Peter,&Spurzem, Rainer.(2014).SUPER MASSIVE BLACK HOLE IN GALACTIC NUCLEI WITH TIDAL DISRUPTION OF STARS.ASTROPHYSICAL JOURNAL,792(2). |
| MLA | Zhong, Shiyan,et al."SUPER MASSIVE BLACK HOLE IN GALACTIC NUCLEI WITH TIDAL DISRUPTION OF STARS".ASTROPHYSICAL JOURNAL 792.2(2014). |
入库方式： OAI收割
来源：国家天文台
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