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arXiv · 2405.09480

Ghost stars in general relativity

L. Herrera·A. Di Prisco·J. Ospino
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Abstract

We explore an idea put forward many years ago by Zeldovich and Novikov concerning the existence of compact objects endowed with arbitrarily small mass. The energy-density of such objects, which we call ``Ghost stars'', is negative in some regions of the fluid distribution, producing a vanishing total mass. Thus, the interior is matched on the boundary surface to Minkowski space-time. Some exact analytical solutions are exhibited and their properties are analyzed. Observational data that could confirm or dismiss the existence of this kind of stellar object is commented.

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L. Herrera, A. Di Prisco, J. Ospino. 2024-05-15. Ghost stars in general relativity. https://arxiv.org/abs/2405.09480

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