2024MNRAS.527.8369M

Query : 2024MNRAS.527.8369M

2024MNRAS.527.8369M - Mon. Not. R. Astron. Soc., 527, 8369-8381 (2024/January-3)

Demographics of three-body binary black holes in star clusters: implications for gravitational waves.

MARIN PINA D. and GIELES M.

Abstract (from CDS):

To explain both the dynamics of a globular cluster and its production of gravitational waves from coalescing binary black holes, it is necessary to understand its population of dynamically formed (or, 'three-body') binaries. We provide a theoretical understanding of this population, benchmarked by direct N-body models. We find that N-body models of clusters on average have only one three-body binary at any given time. This is different from theoretical expectations and models of binary populations, which predict a larger number of binaries (∼5), especially for low-N clusters (∼100), or in the case of two-mass models, low number of black holes. We argue that the presence of multiple binaries is suppressed by a high rate of binary-binary interactions, which efficiently ionize one of the binaries involved. These also lead to triple formation and potentially gravitational wave captures, which may provide an explanation for the recently reported high efficiency of in-cluster mergers in models of low-mass clusters ( $\lesssim 10^5\, {\rm M}_\odot)$ .

Journal keyword(s): black hole physics - gravitational waves - binaries: general - stars: kinematics and dynamics

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	Cl Pal 5	GlC	15 16 05.30	-00 06 41.0		15.1				~	797	1

Query : 2024MNRAS.527.8369M

Basic data :

Cl Pal 5 -- Globular Cluster

G (MCG,UGC,...), GlC (2013A&A,GCl), Cl* (C,Cl,...)

15 16 05.30 -00 06 41.0 [ ] D 2006MNRAS.365.1357D

15 13 31.52 +00 04 20.6 [ ]

000.85207 +45.85999 [ ]

-2.730 -2.654 [0.028 0.027 90] C 2021MNRAS.505.5978V

V(km/s) -58.4 [0.3] / z(spectroscopic) -0.000195 [0.000001] / cz -58.39 [0.30] (Opt) A 2018MNRAS.478.1520B

0.048 [0.015] C 2021MNRAS.505.5978V

dG D ~

9.60 9.60 0 (~) D 2019MNRAS.489.3093S

B 15.1 [~] E ~

g (AB) 12.383 [0.069] C 2014MNRAS.437.1725V

r (AB) 11.941 [0.067] C 2014MNRAS.437.1725V

i (AB) 11.800 [0.056] C 2014MNRAS.437.1725V

z (AB) 11.483 [0.136] C 2014MNRAS.437.1725V

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`NAME Serpens Dwarf`	`GCl 32`	`Z 21-61`	`[TGM94] 151330+000300`
`C 1513+000`	`MCG+00-39-016`	`Z 1513.5+0003`
`Cl Pal 5`	`UGC 9792`	`[KPS2012] MWSC 2282`

References (797 between 1850 and 2026) (Total 797)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Data at NED - NASA/IPAC Extragalactic Database : Cl Pal 5

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UGC 9792

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