https://doi.org/10.1140/epjc/s10052-022-10760-9
Regular Article - Theoretical Physics
Causal structure of accelerating black holes
Departamento de Física Teórica and IPARCOS, Universidad Complutense de Madrid, 28040, Madrid, Spain
Received:
18
July
2022
Accepted:
27
August
2022
Published online:
5
September
2022
Accelerating black holes are described by the so-called C-metric. In this work, we analyse the causal structure of such black holes by using null geodesics. We construct explicitly the relevant Penrose diagrams. First, we recover well-known results associated with the sub-accelerating black holes. Then, we extend the study to the super-accelerating case, in which an additional essential singularity appears. In addition, we consider accelerating black holes with negative masses. We show that they are equivalent to the geometry described by the black hole metric beyond conformal infinity. We compare our results with the Schwarzschild geometry to facilitate understanding and to highlight the interest of the new features.
© The Author(s) 2022
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