27 citations · 94 across the 14 of their papers we have counts for
4 papers · 1 filter
Photon escape cones, physical and optical metrics, asymptotic and near-horizon physics
Joshua Baines, Matt Visser
We consider the explicit analytic behaviour of photon escape cones in generic static spherically symmetric spacetimes, emphasizing the interplay between the physical spacetime metr…
Defect wormholes are defective
Joshua Baines, Rudeep Gaur, Matt Visser
The various "defect wormholes" developed by Klinkhamer have recently attracted considerable attention -- especially in view of the fact that the simplest example, the so-called "va…
Explicit formulae for surface gravities in stationary circular axi-symmetric spacetimes
Joshua Baines, Matt Visser
Using minimalist assumptions we develop a natural functional decomposition for the spacetime metric, and explicit tractable formulae for the surface gravities, in arbitrary station…
Killing horizons and surface gravities for a well-behaved three-function generalisation of the Kerr spacetime
Joshua Baines, Matt Visser
Thanks to the recent advent of the event horizon telescope (EHT), we now have the opportunity to test the physical ramifications of the strong-field near-horizon regime for astroph…