2018MNRAS.480L..58A

Query : 2018MNRAS.480L..58A

2018MNRAS.480L..58A - Mon. Not. R. Astron. Soc., 480, L58-L62 (2018/October-2)

Precessional dynamics of black hole triples: binary mergers with near-zero effective spin.

ANTONINI F., RODRIGUEZ C.L., PETROVICH C. and FISCHER C.L.

Abstract (from CDS):

The binary black hole mergers detected by Advanced LIGO/Virgo have shown no evidence of large black hole spins. However, because LIGO/Virgo best measures the effective combination of the two spins along the orbital angular momentum (χeff), it is difficult to distinguish between binaries with slowly spinning black holes and binaries with spins lying in the orbital plane. Here, we study the spin dynamics for binaries with a distant black hole companion. For spins initially aligned with the orbital angular momentum of the binary, we find that χeff 'freezes' near zero as the orbit decays through the emission of gravitational waves. Through a population study, we show that this process predominantly leads to merging black hole binaries with near-zero χeff. We conclude that if the detected black hole binaries were formed in triples, then this would explain their low χeff without the need to invoke near-zero spins or initially large spin-orbit angles.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): black hole physics - gravitational waves - stars: kinematics and dynamics

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GrW 151226 GWE ~ ~           ~ 275 1

Query : 2018MNRAS.480L..58A

Basic data :
GrW 151226 -- Gravitational Wave Event
Other object types: otypes_help 		GWE (GrW)
ICRS coord. (ep=J2000) : 		No Coord.
Radial velocity / Redshift / cz : 		V(km/s) 25772 [~] / z(~) 0.09 [~] / cz 26981 [~]
   E 2016ApJ...829L..28P
notes:

Identifiers (3) :
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GrW 151226 033853 GrW 151226 NAME GW151226

References (275 between 1850 and 2026) (Total 275)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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