742 citations · 824 across the 9 of their papers we have counts for
9 papers
Notes on extraction of energy from an extremal Kerr-Newman black hole via charged particle collisions
Filip Hejda, José P. S. Lemos, Oleg B. Zaslavskii
The so-called BSW effect is an idealised scenario for high-energy test particle collisions in the vicinity of black holes; if the black hole is extremal and one of the particles fi…
Relativistic location algorithm in curved spacetime
Justin C. Feng, Filip Hejda, Sante Carloni
In this article, we describe and numerically implement a method for relativistic location in slightly curved but otherwise generic spacetimes. For terrestrial positioning in the co…
Extraction of energy from an extremal rotating electrovacuum black hole: Particle collisions in the equatorial plane
Filip Hejda, José P. S. Lemos, Oleg B. Zaslavskii
The collisional Penrose process received much attention when Banados, Silk and West (BSW) pointed out the possibility of test-particle collisions with arbitrarily high center-of-ma…
Extraction of energy from an extremal rotating electrovacuum black hole: Particle collisions along the axis of symmetry
F. Hejda, J. Bičák, O. B. Zaslavskii
High-energy collisions can occur for radially moving charged test particles in the extremal Reissner-Nordström spacetime if one of the particles is fine-tuned and the collision poi…
Black holes, gravitational waves and fundamental physics: a roadmap
Leor Barack, Vitor Cardoso, Samaya Nissanke +203
The grand challenges of contemporary fundamental physics---dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem-…
Kinematic restrictions on particle collisions near extremal black holes: A unified picture
Filip Hejda, Jiří Bičák
In 2009, Banados, Silk and West (BSW) pointed out the possibility of having an unbounded limit of centre-of-mass collision energy for test particles in the field of an extremal Ker…
Extremal Black Holes in Strong Magnetic Fields: Near-Horizon Geometries and Meissner Effect
Filip Hejda, Jiří Bičák
For extremal black holes, one can construct simpler, limiting spacetimes that describe the geometry near degenerate horizons. Since these spacetimes are known to have enhanced symm…
Near-horizon description of extremal magnetised stationary black holes and Meissner effect
Jiří Bičák, Filip Hejda
After a brief summary of the basic properties of stationary spacetimes representing rotating, charged black holes in strong axisymmetric magnetic fields, we concentrate on extremal…
Black Holes and Magnetic Fields
Filip Hejda, Jiří Bičák
We briefly summarise the basic properties of spacetimes representing rotating, charged black holes in strong axisymmetric magnetic fields. We concentrate on extremal cases, for whi…