Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-03-15
Gen.Rel.Grav.39:129-143,2007
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
16 pages, 11 figures, v3: minor changes so as to coincide with published version
Scientific paper
10.1007/s10714-006-0377-z
It is shown numerically that strange matter rings permit a continuous transition to the extreme Kerr black hole. The multipoles as defined by Geroch and Hansen are studied and suggest a universal behaviour for bodies approaching the extreme Kerr solution parametrically. The appearance of a `throat region', a distinctive feature of the extreme Kerr spacetime, is observed. With regard to stability, we verify for a large class of rings, that a particle sitting on the surface of the ring never has enough energy to escape to infinity along a geodesic.
Ansorg Marcus
Labranche Hendrick
Petroff David
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