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P. O. Mazur and E. Mottola, “Gravitational Condensate Stars: An Alternative to Black Holes,” Proceedings of the National Academy of Sciences, Vol. 101, 2004, p. 9545. [arXiv:gr-qc/0407075]

has been cited by the following article:

• TITLE: Charged Gravastar in a Dark Energy Universe

  AUTHORS: C. F. C. Brandt, R. Chan, M. F. A. da Silva, P. Rocha

  KEYWORDS: Gravastar; Charge; De Sitter-Reissner-Nordstrom Spacetime; Black Hole; Naked Singularity; Dark Energy

  JOURNAL NAME: Journal of Modern Physics, Vol.4 No.6, June 21, 2013

  ABSTRACT: Here we constructed a charged gravastar model formed by an interior de Sitter spacetime, a charged dynamical infinitely thin shell with an equation of state and an exterior de Sitter-Reissner-Nordstrom spacetime. We find that the presence of the charge is crucial to the stability of these structures. It can as much favor the stability of a bounded excursion gravastar, and still converting it in a stable gravastar, as make disappear a stable gravastar, depending on the range of the charge considered. There is also formation of black holes and, above certain values, the presence of the charge allows the formation of naked singularity. This is an important example in which a naked singularity emerges as a consequence of unstabilities of a gravastar model, which reinforces that gravastar is not an alternative model to black hole.