Second order perturbations of a Schwarzschild black hole
Reinaldo Gleiser, Oscar Nicasio, Richard Price, Jorge Pullin
Abstract
We study the even-parity =2 perturbations of a Schwarzschild black hole to second order. The Einstein equations can be reduced to a single linear wave equation with a potential and a source term. The source term is quadratic in terms of the first order perturbations. This provides a formalism to address the validity of many first order calculations of interest in astrophysics.
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