Constant-density stars with a covariant anisotropic pressure equation of state admit ultracompact, horizonless GR solutions, regularized into gravastars by a thick shell.
For fixed ˆM, the higher the value of ˆC, smaller the divergence radius
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Ultracompact Anisotropic Stars and Gravastars in General Relativity
Constant-density stars with a covariant anisotropic pressure equation of state admit ultracompact, horizonless GR solutions, regularized into gravastars by a thick shell.