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gr-qc2013★ 66 cited
Ray tracing Einstein-Æther black holes: Universal versus Killing horizons
Bethan Cropp, Stefano Liberati, Arif Mohd +1
Violating Lorentz-invariance, and so implicitly permitting some form of superluminal communication, necessarily alters the notion of a black hole. Nevertheless, in both Einstein-Æt…
gr-qc2013★ 64 cited
Surface gravities for non-Killing horizons
Bethan Cropp, Stefano Liberati, Matt Visser
There are many logically and computationally distinct characterizations of the surface gravity of a horizon, just as there are many logically rather distinct notions of horizon. Fo…