On the Assembly Rate of Highly Eccentric Binary Black Hole Mergers
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In this Letter we calculate the fraction of highly eccentric binary black hole (BBH) mergers resulting from binary-single interactions. Using an N-body code that includes post-Newtonian correction terms, we show that ≳1% of all BBH mergers resulting from this channel will have an eccentricity e > 0.1 when coming into the LIGO frequency band. As the majority of BBH mergers forming in globular clusters are assembled through three-body encounters, we suggest that such interactions are likely to dominate the population of high-eccentricity BBH mergers detectable by LIGO. The relative frequency of highly eccentric events could eventually help to constrain the astrophysical origin of BBH mergers.
Originalsprog | Engelsk |
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Artikelnummer | L14 |
Tidsskrift | Astrophysical Journal Letters |
Vol/bind | 840 |
Udgave nummer | 2 |
Antal sider | 4 |
ISSN | 2041-8205 |
DOI | |
Status | Udgivet - 10 maj 2017 |
Eksternt udgivet | Ja |
ID: 236271846