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Reducing eccentricity in black-hole binary evolutions with initial parameters from post-Newtonian inspiral

Husa, Sascha, Hannam, Mark, González, José, Sperhake, Ulrich and Brügmann, Bernd 2008. Reducing eccentricity in black-hole binary evolutions with initial parameters from post-Newtonian inspiral. Physical Review D 77 (4) , 044037. 10.1103/PhysRevD.77.044037

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Abstract

Standard choices of quasicircular orbit parameters for black-hole binary evolutions result in eccentric inspiral. We introduce a conceptually simple method, which is to integrate the post-Newtonian equations of motion through hundreds of orbits, and read off the values of the momenta at the separation at which we wish to start a fully general relativistic numerical evolution. For the particular case of nonspinning equal-mass inspiral with an initial coordinate separation of D=11M we show that this approach reduces the eccentricity by at least a factor of 5 to e<0.002 as compared to using standard quasicircular initial parameters.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: American Physical Society
ISSN: 1550-7998
Last Modified: 04 Jun 2017 03:50
URI: http://orca.cf.ac.uk/id/eprint/27658

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