University of Surrey

Test tubes in the lab Research in the ATI Dance Research

A triple origin for the heavy and low-spin binary black holes detected by LIGO/VIRGO

Rodriguez, Carl L. and Antonini, Fabio (2018) A triple origin for the heavy and low-spin binary black holes detected by LIGO/VIRGO The Astrophysical Journal.

[img]
Preview
Text
A triple origin for the heavy and low-spin binary black holes detected by LIGO-VIRGO.pdf - Accepted version Manuscript

Download (2MB) | Preview

Abstract

We explore the masses, merger rates, eccentricities, and spins for field binary black holes driven to merger by a third companion through the Lidov-Kozai mechanism. Using a population synthesis approach, we model the creation of stellar-mass black hole triples across a range of different initial conditions and stellar metallicities. We find that the production of triple-mediated mergers is enhanced at low metallicities by a factor of ~ 100 due to the lower black hole natal kicks and reduced stellar mass loss. These triples naturally yield heavy binary black holes with near-zero effective spins, consistent with most of the mergers observed to date. This process produces a merger rate of between 2 and 25 Gpc-3yr-1 in the local universe, suggesting that the Lidov-Kozai mechanism can potentially explain all of the low-spin, heavy black hole mergers observed by Advanced LIGO/Virgo. Finally, we show that triples admit a unique eccentricity and spin distribution that will allow this model to be tested in the near future.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Rodriguez, Carl L.
Antonini, Fabiof.antonini@surrey.ac.uk
Date : 2018
Funders : Science and Technology Facilities Council (STFC)
Copyright Disclaimer : Copyright 2018. The American Astronomical Society. All rights reserved.
Related URLs :
Depositing User : Clive Harris
Date Deposited : 11 Jul 2018 11:00
Last Modified : 11 Dec 2018 11:24
URI: http://epubs.surrey.ac.uk/id/eprint/848681

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800