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arXiv 0901.1569gr-qc
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准平衡黑洞初始数据中的孤立视界结构

Isolated Horizon structures in quasiequilibrium black hole initial data

José Luis Jaramillo

摘要:

孤立视界条件加强了(准局部)黑洞视界的内在和外在几何的时间不变性。非膨胀视界只要求内禀几何的不变性,已成功地应用于瞬时平衡黑洞的(切除)初始数据。在这里,我们建议使用的完全孤立的地平线结构时,解决椭圆系统所产生的完整的共形3+1爱因斯坦方程组下的拟平衡anerodynamic处方。我们认为,这一扩展的椭圆系统的一组几何内边界条件,然后遵循,确定切除表面的形状。

英文摘要:

Isolated horizon conditions enforce the time invariance of both the intrinsic and the extrinsic geometry of a (quasilocal) black hole horizon. Nonexpanding horizons, only requiring the invariance of the intrinsic geometry, have been successfully employed in the (excision) initial data of black holes in instantaneous equilibrium. Here we propose the use of the full isolated horizon structure when solving the elliptic system resulting from the complete set of conformal 3+1 Einstein equations under a quasiequilibrium ansatz prescription. We argue that a set of geometric inner boundary conditions for this extended elliptic system then follows, determining the shape of the excision surface.

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