A numerical approach to finding general stationary vacuum black holes
A numerical approach to finding general stationary vacuum black holes
复制标题
寻找一般静止真空黑洞的数值方法
DOI:
10.1088/0264-9381/29/16/165002
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发表时间:
2012
影响因子:
3.5
通讯作者:
Adam A
中科院分区:
文献类型:
--
作者:
Adam A
The Harmonic Einstein equation is the vacuum Einstein equation supplemented by a gauge fixing term which we take to be that of DeTurck. For static black holes analytically continued to Riemannian manifolds without boundary at the horizon, this equation has previously been shown to be elliptic, and Ricci flow and Newton's method provide good numerical algorithms to solve it. Here we extend these techniques to the arbitrary cohomogeneity stationary case which must be treated in Lorentzian signature. For stationary spacetimes with globally timelike Killing vector the Harmonic Einstein equation is elliptic. In the presence of horizons and ergo-regions it is less obviously so. Motivated by the Rigidity theorem we study a class of stationary black hole spacetimes which is general enough to include many interesting higher dimensional solutions. We argue the Harmonic Einstein equation consistently truncates to this class of spacetimes giving an elliptic problem. The Killing horizons and axes of rotational symmetry are boundaries for this problem and we determine boundary conditions there. As a simple example we numerically construct 4D rotating black holes in a cavity using Anderson's boundary conditions. We demonstrate both Newton's method and Ricci flow to find these Lorentzian solutions.
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DOI:
10.1016/j.physrep.2005.10.001
发表时间:
2004
期刊:
Physics Reports
影响因子:
--
作者:
B. Kol
通讯作者:
B. Kol
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
T. Harmark
通讯作者:
T. Harmark
DOI:
10.1086/151621
发表时间:
1972
期刊:
The Astrophysical Journal
影响因子:
--
作者:
James R. Wilson
通讯作者:
James R. Wilson
影响因子:
2.4
作者:
H. Friedrich
通讯作者:
H. Friedrich
影响因子:
3.5
作者:
P. Figueras;James Lucietti;T. Wiseman
通讯作者:
P. Figueras;James Lucietti;T. Wiseman