Source of black bounces in general relativity

Understand

Black bounces are spacetimes that can describe, depending on certain parameters, black holes or wormholes.

• In this work, we use a method to obtain the matter content that generates black bounce solutions in general relativity.
• The method is constructed in a general way, and as models, we apply it to the Simpson--Visser black bounce solution and the Bardeen-type black bounce solution.
• We obtain that these metrics are solutions of Einstein's equations when we consider the coupling of the gravitational interaction with a phantom scalar field with a nonlinear electrodynamics.