2 papers
gr-qc2026
Comparing twist-free axisymmetric gravitational waves near the black hole threshold
Ananya Adhikari, Tomáš Ledvinka, Daniela Cors +4
The threshold of black hole formation in axisymmetric vacuum gravity is proving to be more complicated than had been anticipated but, following recent advances, a consensus between…
gr-qc2026
Kerr isolated horizon revisited: Caustic-free congruence and adapted tetrad
AleÅ¡ Flandera, David KofroÅ, Tomáš Ledvinka
We revisit the near-horizon description of the Kerr space-time in the isolated horizon formalism using a non-twisting null geodesic congruence and eliminate the coordinate and geod…