Late-Time Dynamics of Scalar Fields on Rotating Black Hole Backgrounds

Details Late-Time Dynamics of Scalar Fields on Rotating Black Hole Backgrounds Late-Time Dynamics of Scalar Fields on Rotating Black Hole Backgrounds

1999-07-08

arxiv.org/abs/gr-qc/9907038v1

Phys.Rev.D60:101501,1999

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, 4 Encapsulated Postscript figures, submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.60.101501

Motivated by results of recent analytic studies, we present a numerical investigation of the late-time dynamics of scalar test fields on Kerr backgrounds. We pay particular attention to the issue of mixing of different multipoles and their fall-off behavior at late times. Confining ourselves to the special case of axisymmetric modes with equatorial symmetry, we show that, in agreement with the results of previous work, the late-time behavior is dominated by the lowest allowed l-multipole. However the numerical results imply that, in general, the late-time fall-off of the dominating multipole is different from that in the Schwarzschild case, and seems to be incompatible with a result of a recently published analytic study.

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