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Binary-Single Encounters of 10 M⊙ Black Holes Including the Effects of Gravitational Radiation

Published online by Cambridge University Press:  25 May 2016

K. N. Kong  and
H. M. Lee
K. N. Kong
Affiliation:
Pusan University Department of Earth Sciences, Pusan 609-735, Korea
H. M. Lee
Affiliation:
Pusan University Department of Earth Sciences, Pusan 609-735, Korea

Abstract

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We compute the outcomes of close encounters between a binary and a single black holes including the effects of gravitational radiation reaction. All masses of individual black holes are assumed to be 1 M⊙. We found that merger of two black holes takes place during the encounters in some cases. Thus the gravitational radiation can act as a mechanism for the dissipation of energy of a cluster mainly composed of 10 M⊙ black holes which are produced by the evolution of high mass stars. The merger probability depends on many parameters in a complex way. Our preliminary calculations show that about 10% of the strong encounters (i.e., rp ∼ a) between a binary of hardness 100 and a single lead to mergers of two black holes in the stellar system of one-dimensional velocity σ = 100 km/s.

Type
Stellar Evolution in Star Clusters
Information
Symposium - International Astronomical Union , Volume 174: Dynamical Evolution of Stars Clusters , 1996 , pp. 351 - 352
Copyright
Copyright © Kluwer 1996 

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