Intermediate-mass Black Holes' Effects on Compact Object Binaries

被引：12

作者：

Deme, Barnabas ^{[1
]}

Meiron, Yohai ^{[1
,2
]}

Kocsis, Bence ^{[1
]}

机构：

[1] Eotvos Lorand Univ, Inst Phys, Pazmany Ps 1-A, H-1117 Budapest, Hungary

[2] Univ Toronto, Dept Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada

来源：

ASTROPHYSICAL JOURNAL | 2020年 / 892卷 / 02期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会; 欧洲研究理事会;

关键词：

Galactic center; Intermediate-mass black holes; NEUTRON-STAR MERGERS; GALACTIC-CENTER; ALGORITHMIC REGULARIZATION; HYPERVELOCITY STARS; STELLAR CLUSTERS; SECULAR DYNAMICS; AGN DISCS; ORBITS; SEGREGATION; ENCOUNTERS;

D O I：

10.3847/1538-4357/ab7921

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Although their existence is not yet confirmed observationally, intermediate-mass black holes (IMBHs) may play a key role in the dynamics of galactic nuclei. In this paper, we neglect the effect of the nuclear star cluster itself and investigate only how a small reservoir of IMBHs influences the secular dynamics of stellar-mass black hole binaries, using N-body simulations. We show that our simplifications are valid and that the IMBHs significantly enhance binary evaporation by pushing the binaries into the Hill-unstable region of parameter space, where they are separated by the supermassive black hole's tidal field. For binaries in the S-cluster region of the Milky Way, IMBHs drive the binaries to merge in up to 1%-6% of cases, assuming five IMBHs within 5 pc of mass 104 M. each. Observations of binaries in the Galactic center may strongly constrain the population of IMBHs therein.

引用

页数：10

共 72 条

[1] GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs [J].

Abbott, B. P. ;

Abbott, R. ;

Abbott, T. D. ;

Abraham, S. ;

Acernese, F. ;

Ackley, K. ;

Adams, C. ;

Adhikari, R. X. ;

Adya, V. B. ;

Affeldt, C. ;

Agathos, M. ;

Agatsuma, K. ;

Aggarwal, N. ;

Aguiar, O. D. ;

Aiello, L. ;

Ain, A. ;

Ajith, P. ;

Allen, G. ;

Allocca, A. ;

Aloy, M. A. ;

Altin, P. A. ;

Amato, A. ;

Ananyeva, A. ;

Anderson, S. B. ;

Anderson, W. G. ;

Angelova, S., V ;

Antier, S. ;

Appert, S. ;

Arai, K. ;

Araya, M. C. ;

Areeda, J. S. ;

Arene, M. ;

Arnaud, N. ;

Arun, K. G. ;

Ascenzi, S. ;

Ashton, G. ;

Aston, S. M. ;

Astone, P. ;

Aubin, F. ;

Aufmuth, P. ;

AultONeal, K. ;

Austin, C. ;

Avendano, V ;

Avila-Alvarez, A. ;

Babak, S. ;

Bacon, P. ;

Badaracco, F. ;

Bader, M. K. M. ;

Bae, S. ;

Baker, P. T. .

PHYSICAL REVIEW X, 2019, 9 (03)

[2] Stellar Dynamics and Stellar Phenomena Near a Massive Black Hole [J].

Alexander, Tal .

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 55, 2017, 55 :17-57

[3] STRONG MASS SEGREGATION AROUND A MASSIVE BLACK HOLE [J].

Alexander, Tal ;

Hopman, Clovis .

ASTROPHYSICAL JOURNAL, 2009, 697 (02) :1861-1869

[4]

[Anonymous], JRASC

[5] SECULAR EVOLUTION OF COMPACT BINARIES NEAR MASSIVE BLACK HOLES: GRAVITATIONAL WAVE SOURCES AND OTHER EXOTICA [J].

Antonini, Fabio ;

Perets, Hagai B. .

ASTROPHYSICAL JOURNAL, 2012, 757 (01)

[6] DYNAMICAL FRICTION AROUND SUPERMASSIVE BLACK HOLES [J].

Antonini, Fabio ;

Merritt, David .

ASTROPHYSICAL JOURNAL, 2012, 745 (01)

[7]

Arca Sedda M., 2019, ARXIV190500902

[8] The MEGaN project II. Gravitational waves from intermediate-mass and binary black holes around a supermassive black hole [J].

Arca-Sedda, M. ;

Capuzzo-Dolcetta, R. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 483 (01) :152-171

[9] Gravitational wave sources from inspiralling globular clusters in the Galactic Centre and similar environments [J].

Arca-Sedda, Manuel ;

Gualandris, Alessia .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2018, 477 (04) :4423-4442

[10] Black Hole Mergers in Galactic Nuclei Induced by the Eccentric Kozai-Lidov Effect [J].

Bao-Minh Hoang ;

Naoz, Smadar ;

Kocsis, Bence ;

Rasio, Frederic A. ;

Dosopoulou, Fani .

ASTROPHYSICAL JOURNAL, 2018, 856 (02)

← 1 2 3 4 5 6 7 8 →