TY - JOUR
T1 - Black-hole normal modes
T2 - A WKB approach. IV. Kerr black holes
AU - Seidel, Edward
AU - Iyer, Sai
PY - 1990
Y1 - 1990
N2 - Using the higher-order WKB method developed by Iyer and Will, we have computed the low-lying normal modes of Kerr black holes for both scalar and gravitational perturbations. For the gravitational modes, we compare our results to previously published numerical results. For some of these modes, we find agreement to within 1% for both the real and imaginary parts of the normal-mode frequency over a wide range of values for the rotation parameter a of the black hole. For other modes, good agreement is limited to lower values of a. The difficulties of the method for higher values of the rotation parameter are discussed.
AB - Using the higher-order WKB method developed by Iyer and Will, we have computed the low-lying normal modes of Kerr black holes for both scalar and gravitational perturbations. For the gravitational modes, we compare our results to previously published numerical results. For some of these modes, we find agreement to within 1% for both the real and imaginary parts of the normal-mode frequency over a wide range of values for the rotation parameter a of the black hole. For other modes, good agreement is limited to lower values of a. The difficulties of the method for higher values of the rotation parameter are discussed.
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U2 - 10.1103/PhysRevD.41.374
DO - 10.1103/PhysRevD.41.374
M3 - Article
AN - SCOPUS:33845347700
VL - 41
SP - 374
EP - 382
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 2
ER -