Stellar black hole binary mergers in open clusters

doi:10.1093/mnras/sty3193

	Stellar black hole binary mergers in open clusters
	Rastello, S.8; Amaro-Seoane, P.3,4,5,6,7; Arca-Sedda, M.2; Capuzzo-Dolcetta, R.8; Fragione, G.1; Tosta e Melo, I.8
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2019-02-01
卷号	483 期号:1 页码:1233-1246
关键词	black hole physics gravitational waves stars: black holes stars: kinematics and dynamics open clusters and associations: general
ISSN号	0035-8711
DOI	10.1093/mnras/sty3193
英文摘要	In this paper we study the evolution of a primordial black hole binary (BHB) in a sample of over 1500 direct-summation N-body simulations of small- and intermediate-size isolated star clusters as proxies of Galactic open clusters. The BHBs have masses in the range of the first LIGO/Virgo detections. Some of our models show a significant hardening of the BHB in a relatively short time. Some of them merge within the cluster, while ejected binaries, typically, have exceedingly long merger time-scales. The perturbation of stars around BHB systems is key to induce their coalescence. The BHBs which merge in the cluster could be detected with a delay of a few years between space detectors, as future LISA, and ground-based ones, due to their relatively high eccentricity. Under our assumptions, we estimate a BHB merger rate of R-mrg similar to 2 yr(-1) Gpc(-3). We see that in many cases the BHB triggers tidal disruption events which, however, are not linked to the GW emission. Open cluster-like systems are, hence, a promising environment for GWs from BHBs and tidal disruptions.
资助项目	Sapienza, Universita di Roma[AR11715C7F89F177] ; German Research Foundation (DFG)[Sonderforschungsbereich SFB 881] ; Ramon y Cajal Programme of the Ministry of Economy, Industry and Competitiveness of Spain ; Lady Davis Fellowship Trust at the Hebrew University of Jerusalem ; Arskin postdoctoral fellowship ; COST Action GWverse[CA16104] ; Foreign Postdoctoral Fellowship Program of the Israel Academy of Sciences and Humanities
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000462251000091
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/34201]
专题	中国科学院数学与系统科学研究院
通讯作者	Rastello, S.
作者单位	1.Hebrew Univ Jerusalem, Racah Inst Phys, IL-9190401 Jerusalem, Israel 2.Astron Rech Inst, Monchhofstr 12-14, D-69120 Heidelberg, Germany 3.TU Berlin, Zentrum Astron & Astrophys, Hardenbergstr 36, D-10623 Berlin, Germany 4.Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 5.Chinese Acad Sci, Acad Math & Syst Sci, Inst Appl Math, Beijing 100190, Peoples R China 6.IEEC, Campus UAB,Carrer Can Magrans S-N, E-08193 Barcelona, Spain 7.CSIC, Inst Space Sci ICE, Carrer Can Magrans S-N, E-08193 Barcelona, Spain 8.Sapienza Univ Roma, Dept Phys, Ple A Moro 5, I-00185 Rome, Italy
推荐引用方式 GB/T 7714	Rastello, S.,Amaro-Seoane, P.,Arca-Sedda, M.,et al. Stellar black hole binary mergers in open clusters[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,483(1):1233-1246.
APA	Rastello, S.,Amaro-Seoane, P.,Arca-Sedda, M.,Capuzzo-Dolcetta, R.,Fragione, G.,&Tosta e Melo, I..(2019).Stellar black hole binary mergers in open clusters.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,483(1),1233-1246.
MLA	Rastello, S.,et al."Stellar black hole binary mergers in open clusters".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 483.1(2019):1233-1246.