Eloy Ayón-Beato

TL;DR: The first regular exact black hole solution in General Relativity was presented in this article, where the source is a nonlinear electrodynamic field satisfying the weak energy condition, which in the limit of weak field becomes the Maxwell field.

TL;DR: In this article, the Bardeen model is interpreted as the gravitational field of a nonlinear magnetic monopole, i.e., as a magnetic solution to Einstein equations coupled to a non-linear electrodynamics.

TL;DR: Using a nonlinear electrodynamics coupled to General Relativity, a new regular exact black hole solution was found in this paper, where the nonlinear theory reduces to the Maxwell one in the weak limit, and the solution corresponds to a charged black hole for |q|≤2s c m≈1.05 m, with metric, curvature invariants, and electric field regular everywhere.

TL;DR: In this article, it was shown that three-dimensional massive gravity admits Lifshitz metrics with generic values of the dynamical exponent $z$ as exact solutions at the point $z = 3.

TL;DR: In this paper, a non-singular exact black hole solution in General Relativity was presented, which corresponds to a charged black hole with |q| ≤ 2scm ≈ 0.6 m, having metric, curvature invariants and electric field bounded everywhere.