Simulations of unequal-mass black hole binaries with spectral methods

Simulations of unequal-mass black hole binaries with spectral methods
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用谱方法模拟不等质量黑洞双星

DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
B. Szilágyi
B. Szilágyi
中科院分区:
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文献类型:
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作者:
L. Buchman;H. Pfeiffer;M. Scheel;B. Szilágyi

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本文介绍了用伪谱方法模拟不等质量非自旋双星黑洞的技术和结果。具体来说,我们开发了一个有效的寻根程序,以确保黑洞的初始数据具有所需的质量和自旋,我们扩展的双坐标系方法和偏心去除不对称的二进制文件。此外,我们描述了技术来模拟不等质量黑洞的合并。本文的第二部分给出了质量比为2,3,4和6的非自旋双黑洞的数值模拟,覆盖了15到22个轨道,合并和环缩。我们讨论了这些模拟的准确性,(最初为零)黑洞自旋的演变,以及剩余黑洞的性质。
This paper presents techniques and results for simulations of unequal-mass, nonspinning binary black holes with pseudospectral methods. Specifically, we develop an efficient root-finding procedure to ensure the black hole initial data have the desired masses and spins; we extend the dual coordinate frame method and eccentricity removal to asymmetric binaries. Furthermore, we describe techniques to simulate mergers of unequal-mass black holes. The second part of the paper presents numerical simulations of nonspinning binary black holes with mass ratios 2, 3, 4, and 6, covering between 15 and 22 orbits, merger and ringdown. We discuss the accuracy of these simulations, the evolution of the (initially zero) black hole spins, and the remnant black hole properties.
DOI: 10.1103/physrevlett.98.091101
发表时间: 2006-10
影响因子: 8.6
作者:
José A. González;U. Sperhake;B. Brügmann;M. Hannam;S. Husa
通讯作者: José A. González;U. Sperhake;B. Brügmann;M. Hannam;S. Husa
非进动黑洞双星的混合后牛顿/数值相对论波形的 NINJA-2 目录
DOI: 10.1088/0264-9381/29/12/124001
发表时间: 2012
影响因子: 3.5
作者:
Ajith P
通讯作者: Ajith P