A plane-symmetric perfect-fluid spacetime with a linear equation of state admits maximal extensions that are either a globally regular black bounce or a black hole with a spacelike singularity, depending on the interior parameters.
Because the NEC is violated away from the Killing horizon, our black-bounce spacetime is expected to be dynamically unstable
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Exact plane symmetric black bounce with a perfect-fluid exterior obeying a linear equation of state
A plane-symmetric perfect-fluid spacetime with a linear equation of state admits maximal extensions that are either a globally regular black bounce or a black hole with a spacelike singularity, depending on the interior parameters.