Numerical relativity with the conformal field equations

被引:0
作者
Husa, S [1 ]
机构
[1] Max Planck Inst Gravitat Phys, D-14476 Golm, Germany
来源
CURRENT TRENDS IN RELATIVISTIC ASTROPHYSICS: THEORETICAL, NUMERICAL, OBSERVATIONAL | 2003年 / 617卷
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中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
I discuss the conformal approach to the numerical simulation of radiating isolated systems in general relativity. The method is based on conformal compactification and a reformulation of the Einstein equations in terms of rescaled variables, the so-called "conformal field equations" developed by Friedrich. These equations allow to include "infinity" on a finite grid, solving regular equations, whose solutions give rise to solutions of the Einstein equations of (vacuum) general relativity. The conformal approach promises certain advantages, in particular with respect to the treatment of radiation extraction and boundary conditions. I will discuss the essential features of the analytical approach to the problem, previous work on the problem - in particular a code for simulations in 3+1 dimensions, some new results, open problems and strategies for future work.
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页码:159 / 192
页数:34
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