Whirling orbits around twirling black holes from conformal symmetry

Shahar Hadar, Achilleas P. Porfyriadis

Research output: Contribution to journalArticlepeer-review


Dynamics in the throat of rapidly rotating Kerr black holes is governed by an emergent near-horizon conformal symmetry. The throat contains unstable circular orbits at radii extending from the ISCO down to the light ring. We show that they are related by conformal transformations to physical plunges and osculating trajectories. These orbits have angular momentum arbitrarily higher than that of ISCO. Using the conformal symmetry we compute analytically the radiation produced by the physical orbits. We also present a simple formula for the full self-force on such trajectories in terms of the self-force on circular orbits.

Original languageEnglish
Article number14
JournalJournal of High Energy Physics
Issue number3
StatePublished - 1 Mar 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017, The Author(s).


  • AdS-CFT Correspondence
  • Black Holes
  • Space-Time Symmetries

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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