Dynamical Surface Gravity in Spherically Symmetric Black Hole Formation

@article{Pielahn2011DynamicalSG,
  title={Dynamical Surface Gravity in Spherically Symmetric Black Hole Formation},
  author={M. Pielahn and G. Kunstatter and A. Nielsen},
  journal={Physical Review D},
  year={2011},
  volume={84},
  pages={104008}
}
We study dynamical surface gravity in a general spherically symmetric setting using Painleve´Gullstrand coordinates. Our analysis includes several definitions that have been proposed in the past as well as two new definitions adapted to Painleve´-Gullstrand coordinates. Various properties are considered, including general covariance, value at extremality, locality and static limit. We illustrate with specific examples of ‘‘dirty’’ black holes that even for spacetimes possessing a global… Expand
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