IFEG 20353
INSTITUTO DE FISICA ENRIQUE GAVIOLA
Unidad Ejecutora - UE
artículos
Título:
The inequality between mass and angular momentum for axially symmetric black holes
Autor/es:
SERGIO DAIN
Revista:
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
Editorial:
World Scientific
Referencias:
Año: 2008 vol. 17 p. 519 - 523
ISSN:
0218-2718
Resumen:
In this essay I first discuss the physical relevance of the inequality $mgeq sqrt{|J|}$ for axially symmetric (non-stationary) black holes, where $m$ is the mass and $J$ the angular momentum of the spacetime. Then, I present a proof of this inequality for the case of one spinning black hole. The proof involves a remarkable characterization of the extreme Kerr black hole as an absolute minimum of the total mass. Finally, I conjecture on the physical implications of this characterization for the non linear stability problem for black holes.
