The missing asymptotic sector of rotating black-hole spectroscopy

Uri Keshet, Arnon Ben-Meir

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The rotation of a Kerr black hole splits its low-frequency spectrum in two, so it was so far unclear why the known highly-damped resonances show no splitting. We find the missing, split sector, with spin s quasinormal modes approaching the total reflection frequencies ω(n∈N)=-ΩδJ-iκ(n-s), where Ω, κ and δ. J are the horizon's angular velocity, surface gravity, and induced change in angular momentum. Surprisingly, the new sector is at least partly polar, and corresponds to reversible J transitions. Its fundamental branch converges quickly, possibly affecting gravitational wave signals. A simple interpretation of the Carter constant of motion is proposed.

Original languageEnglish
Pages (from-to)379-382
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
StatePublished - 7 Oct 2014

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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