scholarly journals Numerical simulations of neutron star-black hole binaries in the near-equal-mass regime

2019 ◽  
Vol 99 (10) ◽  
Author(s):  
F. Foucart ◽  
M. D. Duez ◽  
L. E. Kidder ◽  
S. M. Nissanke ◽  
H. P. Pfeiffer ◽  
...  
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Numerical Simulations ◽  
Equal Mass ◽  
Black Hole Binaries

scholarly journals Momentum flow in black-hole binaries. II. Numerical simulations of equal-mass, head-on mergers with antiparallel spins

2010 ◽  
Vol 82 (6) ◽  
Author(s):  
Geoffrey Lovelace ◽  
Yanbei Chen ◽  
Michael Cohen ◽  
Jeffrey D. Kaplan ◽  
Drew Keppel ◽  
...  
Keyword(s):  
Black Hole ◽  
Numerical Simulations ◽  
Equal Mass ◽  
Black Hole Binaries

scholarly journals Neutron-Star–Black-Hole Binaries Produced by Binary-Driven Hypernovae

2015 ◽  
Vol 115 (23) ◽  
Author(s):  
Chris L. Fryer ◽  
F. G. Oliveira ◽  
J. A. Rueda ◽  
R. Ruffini
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Black Hole Binaries

scholarly journals Investigating the effect of precession on searches for neutron-star–black-hole binaries with Advanced LIGO

2014 ◽  
Vol 89 (2) ◽  
Author(s):  
Ian W. Harry ◽  
Alexander H. Nitz ◽  
Duncan A. Brown ◽  
Andrew P. Lundgren ◽  
Evan Ochsner ◽  
...  
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Black Hole Binaries

Numerical simulations of black-hole binaries

2008 ◽  
Author(s):  
José A. González ◽  
Alfredo Herrera-Aguilar ◽  
Francisco S. Guzmán Murillo ◽  
Ulises Nucamendi Gómez ◽  
Israel Quiros
Keyword(s):  
Black Hole ◽  
Numerical Simulations ◽  
Black Hole Binaries

Simulations of Coalescing Neutron Star and Black Hole Binaries

1999 ◽  
Vol 136 ◽  
pp. 287-299 ◽  
Author(s):  
Maximilian Ruffert ◽  
H.-Thomas Janka
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Black Hole Binaries

scholarly journals Stellar hardening of massive black hole binaries: the impact of the host rotation

2021 ◽  
Vol 508 (1) ◽  
pp. 1533-1542
Author(s):  
Ludovica Varisco ◽  
Elisa Bortolas ◽  
Massimo Dotti ◽  
Alberto Sesana
Keyword(s):  
Black Hole ◽  
Angular Momentum ◽  
Equal Mass ◽  
Stellar Systems ◽  
Massive Black Hole ◽  
Loss Cone ◽  
Black Hole Binaries ◽  
Influence Radius ◽  
Three Body ◽  
The Impact

ABSTRACT Massive black hole binaries (MBHBs) with masses of ∼104 to $\sim 10^{10} \, \mathrm{M}_{\odot {}}$ are one of the main targets for currently operating and forthcoming space-borne gravitational wave observatories. In this paper, we explore the effect of the stellar host rotation on the bound binary hardening efficiency, driven by three-body stellar interactions. As seen in previous studies, we find that the centre of mass (CoM) of a prograde MBHB embedded in a rotating environment starts moving on a nearly circular orbit about the centre of the system shortly after the MBHB binding. In our runs, the oscillation radius is ≈ 0.25 (≈ 0.1) times the binary influence radius for equal mass MBHBs (MBHBs with mass ratio 1:4). Conversely, retrograde binaries remain anchored about the centre of the host. The binary shrinking rate is twice as fast when the binary CoM exhibits a net orbital motion, owing to a more efficient loss cone repopulation even in our spherical stellar systems. We develop a model that captures the CoM oscillations of prograde binaries; we argue that the CoM angular momentum gain per time unit scales with the internal binary angular momentum, so that most of the displacement is induced by stellar interactions occurring around the time of MBHB binding, while the subsequent angular momentum enhancement gets eventually quashed by the effect of dynamical friction. The effect of the background rotation on the MBHB evolution may be relevant for LISA sources, that are expected to form in significantly rotating stellar systems.

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