Multipole Ratios: A New Window into Black Holes

被引：60

作者：

Bena, Iosif ^{[1
]}

Mayerson, Daniel R. ^{[1
]}

机构：

[1] Univ Paris Saclay, Inst Phys Theor, CNRS, CEA, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 125卷 / 22期

关键词：

Supersymmetry; -; Gravitation; Stars;

D O I：

10.1103/PhysRevLett.125.221602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We compute the gravitational multipole moments and ratios of moments of nonextremal and of supersymmetric black holes in four dimensions, as well as of horizonless microstate geometries of the latter. For supersymmetric and for Kerr black holes many of these multipole moments vanish, and their dimensionless ratios are ill defined. We present two methods to compute these dimensionless ratios, which for certain supersymmetric black holes agree surprisingly well. We also compute these dimensionless ratios for the Kerr solution. Our methods allow us to calculate an infinite number of hitherto unknown parameters of Kerr black holes, giving us a new window into their physics.

引用

页数：6

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