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Foliation dependence of black hole apparent horizons in spherical symmetry
Valerio Faraoni, George F. R. Ellis, Javad T. Firouzjaee +2
Numerical studies of gravitational collapse to black holes make use of apparent horizons, which are intrinsically foliation-dependent. We expose the problem and discuss possible so…
New class of LRS spacetimes with simultaneous rotation and spatial twist
Sayuri Singh, George F. R. Ellis, Rituparno Goswami +1
We establish the existence and find the necessary and sufficient conditions for a new class of solutions of Locally Rotationally Symmetric spacetimes that have non vanishing rotati…
The electromagnetic afterglows of gravitational waves as a test for Quantum Gravity
M. A. Abramowicz, T. Bulik, G. F. R. Ellis +2
We argue that if particularly powerful electromagnetic afterglows of the gravitational waves bursts will be observed in the future, this could be used as a strong observational sup…
Constructing black hole entropy from gravitational collapse
Giovanni Acquaviva, George F. R. Ellis, Rituparno Goswami +1
Based on a recent proposal for the gravitational entropy of free gravitational fields, we investigate the thermodynamic properties of black hole formation through gravitational col…