Interior of a Binary Black Hole Merger.
Interior of a Binary Black Hole Merger.
复制标题
二元黑洞合并的内部。
DOI：
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发表时间：
2019
影响因子：
8.6
通讯作者：
E. Schnetter
中科院分区：
文献类型：
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作者：
D. Pook;O. Birnholtz;B. Krishnan;E. Schnetter
我们发现强有力的数值证据的一个新的现象，在一个二元黑洞时空，即合并的边际外捕获表面（MOTS）。通过模拟两个不旋转的不等质量黑洞的迎头碰撞，我们观察到与最后一个黑洞相关联的MOTS与两个初始黑洞相对应的两个初始不相交的表面合并。这就产生了一个连接的序列MOTS之间的初始和最终状态之间的插值所有的方式通过非线性双黑洞合并过程。此外，我们还发现了一个MOTS的存在与自我交叉合并后立即形成。这种情况现在允许我们跟踪合并过程中的物理量（如质量，角动量，更高的多极子和通量），这些物理量可以与波区的引力波信号进行比较，并与引力波探测器的观测结果进行比较。这也表明了一种可能性，证明彭罗斯不等式数学上的一般天体物理二元背孔配置。
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.