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arXiv 0908.0337gr-qc
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黑洞的喇叭穿孔初始数据

Trumpet-puncture initial data for black holes

Jason D. Immerman, Thomas W. Baumgarte

摘要:

我们提出了一种新的方法,穿刺方法的基础上,构建黑洞的初始数据在所谓的喇叭几何,即在切片上,渐近线的非零面积半径的限制表面。我们的方法很容易实现数值,至少对于非旋转黑洞,不需要任何内部边界条件。我们目前的数值结果,得到了与均匀网格有限差分代码,增强黑洞和二元黑洞。我们还评论了这种方法的自旋黑洞的推广。

英文摘要:

We propose a new approach, based on the puncture method, to construct black hole initial data in the so-called trumpet geometry, i.e. on slices that asymptote to a limiting surface of non-zero areal radius. Our approach is easy to implement numerically and, at least for non-spinning black holes, does not require any internal boundary conditions. We present numerical results, obtained with a uniform-grid finite-difference code, for boosted black holes and binary black holes. We also comment on generalizations of this method for spinning black holes.

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