How to tell a gravastar from a black hole (also when it is rotating...)
How to tell a gravastar from a black hole (also when it is rotating...)
How to tell a gravastar from a black hole (also when it is rotating...)
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Axial-Perturbations analys<strong>is</strong>We use a “triangular grid”,i.e a purely outgoing nullslicing, and evolve theperturbation equation afterintroducing an in<strong>it</strong>ialGaussian pulse. Thesolutionψ<strong>is</strong> extracted at alarge d<strong>is</strong>tance and after thein<strong>it</strong>ial transient has died off.
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