Puncture evolution of Schwarzschild black holes

被引：46

作者：

Brown, J. David ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

来源：

PHYSICAL REVIEW D | 2008年 / 77卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.77.044018

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The moving puncture method is analyzed for a single, nonspinning black hole. It is shown that the puncture region is not resolved by current numerical codes. As a result, the geometry near the puncture appears to evolve to an infinitely long cylinder of finite areal radius. The puncture itself actually remains at spacelike infinity throughout the evolution. In the limit of infinite resolution the data never become stationary. However, at any reasonable finite resolution the grid points closest to the puncture are rapidly drawn into the black hole interior by the Gamma-driver shift condition. The data can then evolve to a stationary state. These results suggest that the moving puncture technique should be viewed as a type of "natural excision.".

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