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Horizon Hair of Extremal Black Holes and Measurements at Null Infinity

Y. Angelopoulos, S. Aretakis, and D. Gajic
Phys. Rev. Lett. 121, 131102 – Published 24 September 2018

Abstract

It is shown that the conserved charges on the event horizon and the Cauchy horizon associated with scalar perturbations on extremal black holes are externally measurable from null infinity. This suggests that these charges have the potential to serve as an observational signature. The proof of this result is based on obtaining precise late-time asymptotics for the radiation field of outgoing perturbations.

  • Figure
  • Figure
  • Received 14 June 2018
  • Revised 14 July 2018

DOI:https://doi.org/10.1103/PhysRevLett.121.131102

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & Astrophysics

Authors & Affiliations

Y. Angelopoulos2, S. Aretakis3, and D. Gajic1

  • 1DPMMS, Cambridge University, Cambridge, CB3 0WB, United Kingdom
  • 2Department of Mathematics, UCLA, Los Angeles, California 90095, USA
  • 3Department of Mathematics, University of Toronto, Toronto, M1C 1A4, Canada

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Issue

Vol. 121, Iss. 13 — 28 September 2018

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