Interior of a Binary Black Hole Merger

被引:21
|
作者
Pook-Kolb, Daniel [1 ,2 ]
Birnholtz, Ofek [3 ]
Krishnan, Badri [1 ,2 ]
Schnetter, Erik [4 ,5 ,6 ]
机构
[1] Albert Einstein Inst, Max Planck Inst Gravitat Phys, Callinstr 38, D-30167 Hannover, Germany
[2] Leibniz Univ Hannover, D-30167 Hannover, Germany
[3] Rochester Inst Technol, Ctr Computat Relat & Gravitat, 170 Lomb Mem Dr, Rochester, NY 14623 USA
[4] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada
[5] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada
[6] Louisiana State Univ, Ctr Computat & Technol, Baton Rouge, LA 70803 USA
基金
美国国家科学基金会;
关键词
HORIZONS; ENERGY; FLOW; MASS;
D O I
10.1103/PhysRevLett.123.171102
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We find strong numerical evidence for a new phenomenon in a binary black hole spacetime, namely, the merger of marginally outer trapped surfaces (MOTSs). By simulating the head-on collision of two nonspinning unequal mass black holes, we observe that the MOTS associated with the final black hole merges with the two initially disjoint surfaces corresponding to the two initial black holes. This yields a connected sequence of MOTSs interpolating between the initial and final state all the way through the nonlinear binary black hole merger process. In addition, we show the existence of a MOTS with self-intersections formed immediately after the merger. This scenario now allows us to track physical quantities (such as mass, angular momentum, higher multipoles, and fluxes) across the merger, which can be potentially compared with the gravitational wave signal in the wave zone, and with observations by gravitational wave detectors. This also suggests a possibility of proving the Penrose inequality mathematically for generic astrophysical binary back hole configurations.
引用
收藏
页数:6
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