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arXiv 0908.1063gr-qc
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Bowen-York喇叭数据和黑洞模拟

Bowen-York trumpet data and black-hole simulations

Mark Hannam, Sascha Husa, Niall Ó Murchadha

摘要:

构造黑洞-双星模拟的初始数据的最流行的方法是穿刺方法,其中紧致化的虫洞通过Bowen-York外曲率被赋予线动量和角动量。当这些数据演化时,它们很快接近“喇叭”拓扑,这表明最好从一开始就使用喇叭形式的数据。为了实现这一点,我们扩展穿刺方法,使建设的Bowen-York喇叭,包括一个大纲的存在性和唯一性证明的解决方案。我们使用单域伪谱椭圆解算器构建提升,旋转和二进制Bowen-York穿刺喇叭,并发展二进制数据,并与标准虫洞数据结果进行比较。我们还表明,对于提升喇叭的黑洞质量可以规定{ \it先验},而无需求助于迭代程序,是必要的虫洞数据。

英文摘要:

The most popular method to construct initial data for black-hole-binary simulations is the puncture method, in which compactified wormholes are given linear and angular momentum via the Bowen-York extrinsic curvature. When these data are evolved, they quickly approach a ``trumpet'' topology, suggesting that it would be preferable to use data that are in trumpet form from the outset. To achieve this, we extend the puncture method to allow the construction of Bowen-York trumpets, including an outline of an existence and uniqueness proof of the solutions. We construct boosted, spinning and binary Bowen-York puncture trumpets using a single-domain pseudospectral elliptic solver, and evolve the binary data and compare with standard wormhole-data results. We also show that for boosted trumpets the black-hole mass can be prescribed {\it a priori}, without recourse to the iterative procedure that is necessary for wormhole data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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