MOCCA-SURVEY Database. I. Eccentric Black Hole Mergers during Binary-Single Interactions in Globular Clusters
Samsing, Johan ; Askar, Abbas LU
and Giersz, Mirek
(2018)
In The Astrophysical Journal
855(2).
p.124-124
- Abstract
- We estimate the population of eccentric gravitational wave (GW) binary black hole (BBH) mergers forming during binary–single interactions in globular clusters (GCs), using ~800 GC models that were evolved using the MOCCA code for star cluster simulations as part of the MOCCA-Survey Database I project. By re-simulating BH binary–single interactions extracted from this set of GC models using an N-body code that includes GW emission at the 2.5 post-Newtonian level, we find that ~10% of all the BBHs assembled in our GC models that merge at present time form during chaotic binary–single interactions, and that about half of this sample have an eccentricity >0.1 at 10 Hz. We explicitly show that this derived rate of eccentric mergers is ~100... (More)
- We estimate the population of eccentric gravitational wave (GW) binary black hole (BBH) mergers forming during binary–single interactions in globular clusters (GCs), using ~800 GC models that were evolved using the MOCCA code for star cluster simulations as part of the MOCCA-Survey Database I project. By re-simulating BH binary–single interactions extracted from this set of GC models using an N-body code that includes GW emission at the 2.5 post-Newtonian level, we find that ~10% of all the BBHs assembled in our GC models that merge at present time form during chaotic binary–single interactions, and that about half of this sample have an eccentricity >0.1 at 10 Hz. We explicitly show that this derived rate of eccentric mergers is ~100 times higher than one would find with a purely Newtonian N-body code. Furthermore, we demonstrate that the eccentric fraction can be accurately estimated using a simple analytical formalism when the interacting BHs are of similar mass, a result that serves as the first successful analytical description of eccentric GW mergers forming during three-body interactions in realistic GCs (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/e2176a5f-aa8d-45d6-867b-09ce978b80b8
- author
- Samsing, Johan
; Askar, Abbas
LU
and Giersz, Mirek
- publishing date
- 2018-03-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Astrophysical Journal
- volume
- 855
- issue
- 2
- pages
- 1 pages
- publisher
- American Astronomical Society
- external identifiers
-
- scopus:85044133942
- ISSN
- 0004-637X
- DOI
- 10.3847/1538-4357/aaab52
- language
- English
- LU publication?
- no
- id
- e2176a5f-aa8d-45d6-867b-09ce978b80b8
- date added to LUP
- 2018-10-30 17:56:32
- date last changed
- 2022-04-25 18:36:12
@article{e2176a5f-aa8d-45d6-867b-09ce978b80b8,
abstract = {{We estimate the population of eccentric gravitational wave (GW) binary black hole (BBH) mergers forming during binary–single interactions in globular clusters (GCs), using ~800 GC models that were evolved using the MOCCA code for star cluster simulations as part of the MOCCA-Survey Database I project. By re-simulating BH binary–single interactions extracted from this set of GC models using an N-body code that includes GW emission at the 2.5 post-Newtonian level, we find that ~10% of all the BBHs assembled in our GC models that merge at present time form during chaotic binary–single interactions, and that about half of this sample have an eccentricity >0.1 at 10 Hz. We explicitly show that this derived rate of eccentric mergers is ~100 times higher than one would find with a purely Newtonian N-body code. Furthermore, we demonstrate that the eccentric fraction can be accurately estimated using a simple analytical formalism when the interacting BHs are of similar mass, a result that serves as the first successful analytical description of eccentric GW mergers forming during three-body interactions in realistic GCs}},
author = {{Samsing, Johan and Askar, Abbas and Giersz, Mirek}},
issn = {{0004-637X}},
language = {{eng}},
month = {{03}},
number = {{2}},
pages = {{124--124}},
publisher = {{American Astronomical Society}},
series = {{The Astrophysical Journal}},
title = {{MOCCA-SURVEY Database. I. Eccentric Black Hole Mergers during Binary-Single Interactions in Globular Clusters}},
url = {{http://dx.doi.org/10.3847/1538-4357/aaab52}},
doi = {{10.3847/1538-4357/aaab52}},
volume = {{855}},
year = {{2018}},
}