Black-hole normal modes: Phase-integral treatment
- 15 April 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 45 (8) , 2609-2616
- https://doi.org/10.1103/physrevd.45.2609
Abstract
A simple two-turning-point phase-integral formula, valid in an arbitrary order of approximation, for the determination of the normal-mode frequencies of a Schwarzschild black hole is derived rigorously. Numerical results obtained from this formula show that the phase-integral method in general yields the normal-mode frequencies more accurately than previous approximate analytical treatments.Keywords
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