Dynamical Evolution of an Unstable Gravastar with Zero Mass

Details Dynamical Evolution of an Unstable Gravastar with Zero Mass Dynamical Evolution of an Unstable Gravastar with Zero Mass

2010-04-16

arxiv.org/abs/1004.2906v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, 10 figures, to appear in Astrophysics and Space Science

Scientific paper

Using the conventional gravastar model, that is, an object constituted by two components where one of them is a massive infinitely thin shell and the other one is a de Sitter interior spacetime, we physically interpret a solution characterized by a zero Schwarzschild mass. No stable gravastar is formed and it collapses without forming an event horizon, originating what we call a massive non-gravitational object. The most surprise here is that the collapse occurs with an exterior de Sitter vacuum spacetime. This creates an object which does not interact gravitationally with an outside test particle and it may evolve to a point-like topological defect.

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