Dynamically formed black hole binaries: In-cluster versus ejected mergers
O Anagnostou, M Trenti, A Melatos
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA | CAMBRIDGE UNIV PRESS | Published : 2020
The growing number of black hole binary (BHB) mergers detected by the Laser Interferometer Gravitational-Wave Observatory have the potential to enable an unprecedented characterisation of the physical processes and astrophysical conditions that govern the formation of compact binaries. In this paper, we focus on investigating the dynamical formation of BHBs in dense star clusters through a state-of-the-art set of 58 direct N-body simulations with N particles which include stellar evolution, gravitational braking, orbital decay through gravitational radiation, and galactic tidal interactions. The simulations encompass a range of initial conditions representing typical young globular clusters..View full abstract
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Awarded by Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav)
We would like to thank Ruggero De Vita, IlyaMandel, and Marcel Hohmann for useful discussions. Parts of this research are supported by the Australian Re-search Council Centre of Excellence for Gravitational Wave Discovery (OzGrav) (project number CE170100004). This research has made use of data, software, and/or web tools obtained from the GravitationalWave Open Science Center (https://www.gw-openscience.org), a service of LIGO Laboratory, the LIGO Scientific Collaboration, and the Virgo Collaboration. LIGO is funded by the US National Science Foundation. Virgo is funded by the French CentreNational de Recherche Scientifique (CNRS), the Italian Istituto Nazionale della Fisica Nucleare (INFN), and the Dutch Nikhef, with contributions by Polish and Hungarian institutes. Numerical simulations have been performed onHPC clusters at theUniversity of Melbourne (Spartan) and at the Swinburne University (OzSTAR).