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arXiv · 0704.3963

Non-monotonic orbital velocity profiles around rapidly rotating Kerr-(anti-)de Sitter black holes

Andreas Mueller·Bernd Aschenbach
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Abstract

It has been recently demonstrated that the orbital velocity profile around Kerr black holes in the equatorial plane as observed in the locally non-rotating frame exhibits a non-monotonic radial behaviour. We show here that this unexpected minimum-maximum feature of the orbital velocity remains if the Kerr vacuum is generalized to the Kerr-de Sitter or Kerr-anti-de Sitter metric. This is a new general relativity effect in Kerr spacetimes with non-vanishing cosmological constant. Assuming that the profile of the orbital velocity is known, this effect constrains the spacetime parameters.

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Andreas Mueller, Bernd Aschenbach. 2007-04-30. Non-monotonic orbital velocity profiles around rapidly rotating Kerr-(anti-)de Sitter black holes. https://doi.org/10.1088/0264-9381%2F24%2F10%2F009

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