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Journal Article

#### Proof of the angular momentum-mass inequality for axisymmetric black holes

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##### Fulltext (public)

JDG-79-1-A3-Dain.pdf

(Publisher version), 299KB

##### Supplementary Material (public)

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##### Citation

Dain, S. (2008). Proof of the angular momentum-mass inequality for axisymmetric black
holes.* Journal of Differential Geometry,* *79*(1), 33-67.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-63BD-2

##### Abstract

We prove that an extreme Kerr initial data set is a unique absolute minimum of the total mass in a (physically relevant) class of vacuum, maximal, asymptotically flat, axisymmetric data for Einstein equations with fixed angular momentum. These data represent non-stationary, axially symmetric black holes. As a consequence, we obtain that any data in this class satisfy the inequality √J ≤ m, where m and J are the total mass and angular momentum of spacetime.