Publication date: Dec 2014
Abstract:
General relativity combined with a non-linear electrodynamics enables to
find regular black hole solutions. The best known solution of this kind
is described by the Bardeen spacetime with spacetime parameters giving
gravitational mass m and magnetic charge g. For ratio g/m large enough,
the Bardeen spacetime describes a no-horizon regular solution. Here we
demonstrate properties of the Bardeen spacetimes by the embedding
diagrams of the equatorial plane of the ordinary geometry, and the
optical geometry enabling reflection of properties of test particle
motion.
Authors:
Goluchová, Kateřina; Stuchlík, Zdeněk;