The Schr\"odinger-type equation for odd-parity perturbations on a background geometry has been extended to the even-parity perturbations. This should greatly simplify the analysis for calculations of gravitational radiation from stars and from objects falling into black holes.
No takes yet. Share an insight, caveat, or question.
Frank J. Zerilli (1970) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: