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Smoothness of the future and past trapped sets in Kerr-Newman-Taub-NUT spacetimes

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Paganini,  Claudio
Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

Oancea,  Marius A.
Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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1710.02403.pdf
(Preprint), 542KB

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Citation

Paganini, C., & Oancea, M. A. (2018). Smoothness of the future and past trapped sets in Kerr-Newman-Taub-NUT spacetimes. Classical and Quantum Gravity, 35(6): 067001. doi:10.1088/1361-6382/aaaa5b.


Cite as: http://hdl.handle.net/21.11116/0000-0000-ADD8-A
Abstract
We consider the sets of future/past trapped null geodesics in the exterior region of a sub-extremal Kerr-Newman-Taub-NUT spacetime. We show that, from the point of view of any timelike observer outside of such a black hole, trapping can be understood as two smooth sets of spacelike directions on the celestial sphere of the observer.