Improved next-to-leading order tidal heating and torquing of a Kerr black hole

Katerina Chatziioannou, Eric Poisson, Nicolás Yunes

Research output: Contribution to journalArticlepeer-review

Abstract

We calculate the energy and angular-momentum fluxes across the event horizon of a tidally deformed, rapidly rotating black hole to next-to-leading order in the curvature of the external spacetime. These are expressed in terms of tidal quadrupole moments and their time derivatives, which provide a characterization of a generic tidal environment. As an application of our results, we provide an expression for the energy and angular-momentum fluxes across the horizon when the black hole is a member of a binary system on a slowly moving, quasicircular orbit. Our expressions are accurate to 1.5 post-Newtonian order beyond the leading-order fluxes, but they are valid for arbitrary mass ratios. We compare our results to those previously obtained in the case of an extreme mass ratio binary, and find that they do not agree at the 1.5 post-Newtonian order. We investigate a number of possible sources for this discrepancy, but are ultimately unable to resolve it.

Original languageEnglish (US)
Article number084043
JournalPhysical Review D
Volume94
Issue number8
DOIs
StatePublished - Oct 26 2016
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint

Dive into the research topics of 'Improved next-to-leading order tidal heating and torquing of a Kerr black hole'. Together they form a unique fingerprint.

Cite this