BOOSTED TIDAL DISRUPTION BY MASSIVE BLACK HOLE BINARIES DURING GALAXY MERGERS FROM THE VIEW OF N-BODY SIMULATION

	BOOSTED TIDAL DISRUPTION BY MASSIVE BLACK HOLE BINARIES DURING GALAXY MERGERS FROM THE VIEW OF N-BODY SIMULATION
	Li, Shuo1,2,3 ; Liu, F. K.3,4; Berczik, Peter1,2,5,6 ; Spurzem, Rainer1,2,4,5
刊名	ASTROPHYSICAL JOURNAL
	2017-01-10
卷号	834 期号:2
关键词	galaxies: evolution galaxies: interactions galaxies: kinematics and dynamics galaxies: nuclei methods: numerical
英文摘要	Supermassive black hole binaries (SMBHBs) are productions of the hierarchical galaxy formation model. There are many close connections between a central SMBH and its host galaxy because the former plays very important roles on galaxy formation and evolution. For this reason, the evolution of SMBHBs in merging galaxies is a fundamental challenge. Since there are many discussions about SMBHB evolution in a gas-rich environment, we focus on the quiescent galaxy, using tidal disruption (TD) as a diagnostic tool. Our study is based on a series of numerical, large particle number, direct N-body simulations for dry major mergers. According to the simulation results, the evolution can be divided into three phases. In phase I, the TD rate for two well separated SMBHs in a merging system is similar to that for a single SMBH in an isolated galaxy. After two SMBHs approach close enough to form a bound binary in phase II, the disruption rate can be enhanced by similar to 2 orders of magnitude within a short time. This "boosted" disruption stage finishes after the SMBHB evolves to a compact binary system in phase III, corresponding to a reduction in disruption rate back to a level of a few times higher than in phase I. We also discuss how to correctly extrapolate our N-body simulation results to reality, and the implications of our results to observations.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	FINAL-PARSEC PROBLEM ; SURVEY SPECTROSCOPIC SAMPLE ; ACTIVE GALACTIC NUCLEI ; LONG-TERM EVOLUTION ; RADIO GALAXIES ; COSMOLOGICAL SIMULATIONS ; VELOCITY DISPERSION ; ELLIPTIC GALAXIES ; EFFICIENT MERGER ; MERGING GALAXIES
收录类别	SCI
语种	英语
WOS记录号	WOS:000400148300008
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8846]
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, 20A Datun Rd, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China 3.Peking Univ, Dept Astron, Sch Phys, Yiheyuan Lu 5, Beijing 100871, Peoples R China 4.Peking Univ, Kavli Inst Astron & Astrophys, Yiheyuan Lu 5, Beijing 100871, Peoples R China 5.Heidelberg Univ, Zentrum Astron, Astron Rechen Inst, Mochhofstr 12-14, D-69120 Heidelberg, Germany 6.Natl Acad Sci Ukraine, Main Astron Observ, 27 Akad Zabolotnoho St, UA-03680 Kiev, Ukraine
推荐引用方式 GB/T 7714	Li, Shuo,Liu, F. K.,Berczik, Peter,et al. BOOSTED TIDAL DISRUPTION BY MASSIVE BLACK HOLE BINARIES DURING GALAXY MERGERS FROM THE VIEW OF N-BODY SIMULATION[J]. ASTROPHYSICAL JOURNAL,2017,834(2).
APA	Li, Shuo,Liu, F. K.,Berczik, Peter,&Spurzem, Rainer.(2017).BOOSTED TIDAL DISRUPTION BY MASSIVE BLACK HOLE BINARIES DURING GALAXY MERGERS FROM THE VIEW OF N-BODY SIMULATION.ASTROPHYSICAL JOURNAL,834(2).
MLA	Li, Shuo,et al."BOOSTED TIDAL DISRUPTION BY MASSIVE BLACK HOLE BINARIES DURING GALAXY MERGERS FROM THE VIEW OF N-BODY SIMULATION".ASTROPHYSICAL JOURNAL 834.2(2017).