Uniqueness theorem for 5-dimensional black holes with two axial Killing fields

Details Uniqueness theorem for 5-dimensional black holes with two axial Killing fields Uniqueness theorem for 5-dimensional black holes with two axial Killing fields

2007-07-18

arxiv.org/abs/0707.2775v2

Commun.Math.Phys.283:749-768,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Latex, 21pp, no figures. v2: technical assumption added, extended discussion of orbit space, results unchanged but sharpened

Scientific paper

10.1007/s00220-008-0516-3

We show that two stationary, asymptotically flat vacuum black holes in 5 dimensions with two commuting axial symmetries are identical if and only if their masses, angular momenta, and their ``rod structures'' coincide. We also show that the horizon must be topologically either a 3-sphere, a ring, or a Lens-space. Our argument is a generalization of constructions of Morisawa and Ida (based in turn on key work of Maison) who considered the spherical case, combined with basic arguments concerning the nature of the factor manifold of symmetry orbits.

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