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The Tolman VII solution, trapped null orbits and w - modes

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arxiv gr-qc/0104002 v2 pith:LRSQZGIK submitted 2001-03-31 gr-qc astro-ph

classification gr-qcastro-ph
keywords solutionexhibitsmodesnullorbitspartregiontolman
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abstract

The Tolman VII solution is an exact static spherically symmetric perfect fluid solution of Einstein's equations that exhibits a surprisingly good approximation to a neutron star. We show that this solution exhibits trapped null orbits in a causal region even for a tenuity (total radius to mass ratio) $> 3$. In this region the dynamical part of the potential for axial w - modes dominates over the centrifugal part.

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