Gauge-invariant non-spherical metric perturbations of Schwarzschild black-hole spacetimes
Gauge-invariant non-spherical metric perturbations of Schwarzschild black-hole spacetimes
The theory of gauge-invariant non-spherical metric perturbations of Schwarzschild black hole spacetimes is now well established.Yet, as different notations and conventions have been used throughout the years, the literature on the subject is often confusing and sometimes confused.The purpose of this paper is to review and collect the relevant expressions …