Gauge invariant spectral Cauchy characteristic extraction

被引：18
|
作者：
Handmer, Casey J. [1 ]
Szilagyi, Bela [1 ]
Winicour, Jeffrey [2 ]
机构：
[1] CALTECH, Pasadena, CA 91125 USA
[2] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA
来源：
CLASSICAL AND QUANTUM GRAVITY | 2015年 / 32卷 / 23期
关键词：
spectral; gravitational radiation; general relativity; numerical methods; gauge invariance; characteristic extraction; waveform; NULL-CONE; GRAVITATIONAL-RADIATION; GENERAL RELATIVITY; FIELDS; WAVES;
D O I：
10.1088/0264-9381/32/23/235018
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present gauge invariant spectral Cauchy characteristic extraction. We compare gravitational waveforms extracted from a head-on black hole merger simulated in two different gauges by two different codes. We show rapid convergence, demonstrating both gauge invariance of the extraction algorithm and consistency between the legacy Pitt null code and the much faster spectral Einstein code (SpEC).
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页数：22
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