Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20710202g&link_type=abstract
American Astronomical Society Meeting 207, #102.02; Bulletin of the American Astronomical Society, Vol. 37, p.1331
Astronomy and Astrophysics
Astronomy
Scientific paper
We present numerical three-body experiments that include the effects of gravitational radiation reaction by using equations of motion that include the 2.5-order post-Newtonian force terms, which are the leading order terms of energy loss from gravitational waves. Building on previous work, we simulate sequences of high-mass-ratio three-body encounters as they would occur in a dense stellar system. The simulations show that the binaries merge with extremely high eccentricity such that when the gravitational waves are detectable by LISA, most of the binaries will have eccentricities e > 0.9 though all will have circularized by the time they are detectable by LIGO. We also investigate the implications for the formation and growth of intermediate-mass black holes (IMBHs) and find that the inclusion of gravitational waves during the encounter results in roughly half as many black holes ejected from the host cluster for each black hole accreted onto the growing IMBH.
Gultekin Kayhan
Hamilton Douglas P.
Miller Michael Coleman
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