Spinning BTZ Black Hole versus Kerr Black Hole : A Closer Look

Details Spinning BTZ Black Hole versus Kerr Black Hole : A Closer Look Spinning BTZ Black Hole versus Kerr Black Hole : A Closer Look

1998-09-16

arxiv.org/abs/gr-qc/9809047v2

Phys.Rev. D59 (1999) 064002

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages, 1 figure, Revtex, Accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.59.064002

By applying Newman's algorithm, the AdS_3 rotating black hole solution is ``derived'' from the nonrotating black hole solution of Banados, Teitelboim, and Zanelli (BTZ). The rotating BTZ solution derived in this fashion is given in ``Boyer-Lindquist-type'' coordinates whereas the form of the solution originally given by BTZ is given in a kind of an ``unfamiliar'' coordinates which are related to each other by a transformation of time coordinate alone. The relative physical meaning between these two time coordinates is carefully studied. Since the Kerr-type and Boyer-Lindquist-type coordinates for rotating BTZ solution are newly found via Newman's algorithm, next, the transformation to Kerr-Schild-type coordinates is looked for. Indeed, such transformation is found to exist. And in this Kerr-Schild-type coordinates, truely maximal extension of its global structure by analytically continuing to ``antigravity universe'' region is carried out.

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