Analytic study of rotating black-hole quasinormal modes

Uri Keshet, Shahar Hod

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


A Bohr-Sommerfeld equation is derived for the highly damped quasinormal mode frequencies ω(n1) of rotating black holes. It may be written as 2∫C(pr+ip0)dr=(n+1/2)h, where pr is the canonical momentum conjugate to the radial coordinate r along a null geodesic of energy ω and angular momentum m, p0=O(ω0), and the contour C connects two complex turning points of pr. The solutions are ω(n)=-mω-i(+nδ), where {ω,δ} >0 are functions of the black-hole parameters alone. Some physical implications are discussed.

Original languageEnglish
Article number061501
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number6
StatePublished - 4 Sep 2007
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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