A proof of the uniform boundedness of solutions to the wave equation on slowly rotating Kerr backgrounds
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Authors
Dafermos, Mihalis
Rodnianski, Igor
Publication Date
2008-05-28Journal Title
Inventiones Mathematicae
ISSN
0020-9910
Publisher
Springer Nature
Volume
185
Pages
467-559
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Dafermos, M., & Rodnianski, I. (2008). A proof of the uniform boundedness of solutions to the wave equation on
slowly rotating Kerr backgrounds. Inventiones Mathematicae, 185 467-559. https://doi.org/10.1007/s00222-010-0309-0
Abstract
We consider Kerr spacetimes with parameters a and M such that |a|<< M,
Kerr-Newman spacetimes with parameters |Q|<< M, |a|<< M, and more generally, stationary axisymmetric black hole exterior spacetimes which are sufficiently close to a Schwarzschild metric with parameter M>0, with appropriate geometric assumptions on the plane spanned by the Killing fields. We show uniform boundedness on the exterior for sufficiently regular solutions to the scalar homogeneous wave equation. In particular, the bound holds up to and including the event horizon. No unphysical restrictions are imposed on the behaviour of the solution near the bifurcation surface of the event horizon. The pointwise estimate derives in fact from the uniform boundedness of a positive definite energy flux. Note that in view of the very general assumptions, the separability properties of the wave equation on the Kerr background are not used.
Keywords
gr-qc, gr-qc, math.AP, math.DG
Sponsorship
European Research Council (208007)
Identifiers
External DOI: https://doi.org/10.1007/s00222-010-0309-0
This record's URL: https://www.repository.cam.ac.uk/handle/1810/288769
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