Abstract
New spherically symmetric gravastar solutions, stable to radial perturbations, are found by utilizing the construction of Visser and Wiltshire. The solutions possess an anti-de Sitter or de Sitter interior and a Schwarzschild–(anti)- de Sitter or Reissner–Nordström exterior. We find a wide range of parameters which allow stable gravastar solutions, and present the different qualitative behaviour of the equation of state for these parameters.
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