99 citations · 250 across the 8 of their papers we have counts for
8 papers
Dark energy, exotic matter and properties of horizons in black hole physics and cosmology
K. A. Bronnikov, E. Elizalde, O. B. Zaslavskii
We summarize recent results on the properties of near-horizon metrics in different spherically symmetric space-times, including Kantowski-Sachs cosmological models whose evolution…
Black hole mimickers: regular versus singular behavior
José P. S. Lemos, Oleg B. Zaslavskii
Black hole mimickers are possible alternatives to black holes, they would look observationally almost like black holes but would have no horizon. The properties in the near-horizon…
Black holes can have curly hair
K. A. Bronnikov, O. B. Zaslavskii
We study equilibrium conditions between a static, spherically symmetric black hole and classical matter in terms of the radial pressure to density ratio p_r/ρ= w(u), where u is the…
Matter sources for a Null Big Bang
K. A. Bronnikov, O. B. Zaslavskii
We consider the properties of stress-energy tensors compatible with a Null Big Bang, i.e., cosmological evolution starting from a Killing horizon rather than a singularity. For Kan…
Truly naked spherically-symmetric and distorted black holes
O. B. Zaslavskii
We demonstrate the existence of spherically-symmetric truly naked black holes (TNBH) for which the Kretschmann scalar is finite on the horizon but some curvature components includi…
Traversable wormholes: minimum violation of null energy condition revisited
O. B. Zaslavskii
It was argued in literature that traversable wormholes can exist with arbitrarily small violation of null energy conditions. We show that if the amount of exotic material near the…