Simulations of Binary Black Hole Mergers Using Spectral Methods
Simulations of Binary Black Hole Mergers Using Spectral Methods
复制标题
使用谱方法模拟双黑洞合并
DOI：
10.1103/physrevd.80.124010
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发表时间：
2009
影响因子：
5
通讯作者：
M. Scheel
中科院分区：
文献类型：
--
作者：
B. Szil'agyi;L. Lindblom;M. Scheel
本文提出了在数值方法和规范选择方面的一些改进，使得现在可以使用伪谱演化代码SpEC来模拟“一般”双黑洞演化的合并和环落阶段。这些改进包括使用新的阻尼波规范条件，采用具有适当滤波的新网格结构，以提高稳定性，并使网格结构更好地适应黑洞的形状和大小。对各种双黑洞系统进行了模拟，说明了这些新方法的成功。这些包括相当一般的系统，它们具有不等的质量（高达$2\ensuremath{\mathbin:}1$质量比）和指向不同方向的自旋（量级高达$0.4{M}^{2}$）。
Several improvements in numerical methods and gauge choice are presented that make it possible now to perform simulations of the merger and ringdown phases of ``generic'' binary black hole evolutions using the pseudospectral evolution code SpEC. These improvements include the use of a new damped-wave gauge condition, a new grid structure with appropriate filtering that improves stability, and better adaptivity in conforming the grid structures to the shapes and sizes of the black holes. Simulations illustrating the success of these new methods are presented for a variety of binary black hole systems. These include fairly generic systems with unequal masses (up to $2\ensuremath{\mathbin:}1$ mass ratios), and spins (with magnitudes up to $0.4{M}^{2}$) pointing in various directions.
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