Applications of black-hole perturbation techniques
Separable, decoupled differential equations which describe gravitational, electromagnetic, and scalar perturbations of nonrotating (Schwarzschild) and rotating (Kerr) black holes have recently become available. Fortuitously, many interesting astrophysical processes near black holes can accurately be...
Internet
https://thesis.library.caltech.edu/3221/1/Press_wh_1973.pdfPress, William H. (1973) Applications of black-hole perturbation techniques. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/0HKZ-DJ23. https://resolver.caltech.edu/CaltechETD:etd-08252008-111253 <https://resolver.caltech.edu/CaltechETD:etd-08252008-111253>