Circularization and final spin in eccentric binary-black-hole inspirals

被引：100

作者：

Hinder, Ian ^{[1
]}

Vaishnav, Birjoo ^{[1
]}

Herrmann, Frank ^{[1
]}

Shoemaker, Deirdre M. ^{[1
]}

Laguna, Pablo ^{[1
]}

机构：

[1] Penn State Univ, Ctr Gravitat Wave Phys, University Pk, PA 16802 USA

来源：

PHYSICAL REVIEW D | 2008年 / 77卷 / 08期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.77.081502

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results from numerical relativity simulations of equal-mass, nonspinning binary-black-hole inspirals and mergers with initial eccentricities e <= 0.8 and coordinate separations D >= 12M of up to 9 orbits (18 gravitational wave cycles). We extract the mass M-f and spin a(f) of the final black hole and find, for eccentricities e less than or similar to 0.4, that a(f)/M-f approximate to 0.69 and M-f/M-adm approximate to 0.96 are independent of the initial eccentricity, suggesting that the binary has circularized by the merger time. For e greater than or similar to 0.5, the black holes plunge rather than orbit, and we obtain a maximum spin parameter a(f)/M-f approximate to 0.72 around e = 0.5.

引用

页数：5

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