Local and approximate classification of spacetimes in the transverse frames

Local and approximate classification of spacetimes in the transverse frames
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横向框架中时空的局部和近似分类

DOI:
10.1103/physrevd.104.044047
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发表时间:
2021
期刊:
影响因子:
5
通讯作者:
Lousto, Carlos O.
Lousto, Carlos O.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Rosato, Nicole;Nakano, Hiroyuki;Lousto, Carlos O.

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我们重新定义的横向框架和四分体的选择方面的应用,以数值生成的时空,特别是那些从合并的二元黑洞。我们介绍的概念,当地和近似代数彼得罗夫型强场制度。我们定义了一个索引彼得罗夫类型II和D之间的区别,并定义这些近似类型的时空区域时,结合使用的专业不变。我们提供了一个明确的例子,应用这种方法的Brill-Lindquist初始数据对应于两个nonspinning黑洞从静止在一个给定的初始分离。我们发现一个甜甜圈状的区域,大约是彼得罗夫II型周围的一个近似彼得罗夫D型区域。我们完成了研究,提出了一个完全对称的四分体固定的横向框架,可以简单地实现在数值生成的时空,通过计算自旋系数比。我们提供了一个应用程序,明确推导克尔微扰方程在这个四分体。
We revisit the definition of transverse frames and tetrad choices with regard to its application to numerically generated spacetimes, in particular those from the merger of binary black holes. We introduce the concept of local and approximate algebraic Petrov types in the strong-field regime. We define an indexable to discriminate between Petrov types II and D and define regions of spacetime of those approximate types when used in conjunction with the speciality invariant. We provide an explicit example applying this method to Brill-Lindquist initial data corresponding to two nonspinning black holes from rest at a given initial separation. We find a doughnutlike region that is approximately of Petrov type II surrounded by an approximately Petrov type D region. We complete the study by proposing a totally symmetric tetrad fixing of the transverse frame that can be simply implemented in numerically generated spacetimes through the computation of spin coefficients ratios. We provide an application by explicitly deriving the Kerr-perturbative equations in this tetrad.
计算机生成的时空:具有引力辐射的黑洞*
DOI: --
发表时间: 1977
期刊:
影响因子: --
作者:
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通讯作者: L. Smarr
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发表时间: 2001
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通讯作者: Alejandro Perez