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GR: Gravitation und Relativitätstheorie
GR 8: Schwarze Löcher
GR 8.1: Fachvortrag
Mittwoch, 28. März 2001, 14:15–14:30, VII
Rotating Hairy Black Holes — •Jutta Kunz1 and Burkhard Kleihaus2 — 1Fachbereich Physik, Universität Oldenburg, Postfach 2503, D-26111 Oldenburg, Germany — 2Department on Mathematical Physics, University College, Dublin, Dublin 4, Ireland
We construct stationary black holes in SU(2) Einstein-Yang-Mills theory,
which carry angular momentum and electric charge [1].
Possessing non-trivial non-abelian magnetic fields
outside their regular event horizon,
they represent non-perturbative rotating hairy black holes.
Starting from the static spherically symmetric hairy black hole solutions,
we obtain a lower branch of rotating axially symmetric solutions,
by increasing the rotational velocity of the horizon,
ωH, from zero, keeping the horizon radius xH fixed.
When a maximal value of ωH is reached
an upper branch forms, bending backwards towards ωH=0.
Along both branches mass, electric charge and angular momentum
continuously increase.
But whereas mass and angular momentum per unit mass
of the non-abelian solutions increase strongly
along the upper branch, their electric charge remains small.
[1] B. Kleihaus and J. Kunz, gr-qc/0012081