Local and approximate classification of spacetimes in the transverse frames
Local and approximate classification of spacetimes in the transverse frames
复制标题
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
影响因子:
5
通讯作者:
Lousto, Carlos O.
中科院分区:
文献类型:
--
作者:
Rosato, Nicole;Nakano, Hiroyuki;Lousto, Carlos O.
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.
DOI:
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发表时间:
1977
期刊:
影响因子:
--
作者:
L. Smarr
通讯作者:
L. Smarr
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
C. Lousto
通讯作者:
C. Lousto
DOI:
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发表时间:
2001
期刊:
影响因子:
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作者:
O. Moreschi;Alejandro Perez
通讯作者:
Alejandro Perez