volume 42, issue 6, P1884-1907 1990
DOI: 10.1103/physrevd.42.1884
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Abstract: In this paper we develop the mathematical formalism needed to study even-parity perturbations of spherical stellar collapse models, with the goal of calculating the gravitational radiation emitted during a stellar collapse to a black hole or a type-I1 supernova explosion. We concentrate on developing a set of gauge-invariant perturbation quantities, both inside the star and outside in the vacuum surrounding the star, their evolution equations, and equations which match the two sets of perturbation quantities …

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