Understanding the importance of transient resonances in extreme mass ratio inspirals

Christopher P L Berry, R. H. Cole, P. Cañizares, J. R. Gair

Research output: Contribution to journalArticlepeer-review

Abstract

Extreme mass ratio inspirals (EMRIs) occur when a compact object orbits a much larger one, like a solar-mass black hole around a supermassive black hole. The orbit has 3 frequencies which evolve through the inspiral. If the orbital radial frequency and polar frequency become commensurate, the system passes through a transient resonance. Evolving through resonance causes a jump in the evolution of the orbital parameters. We study these jumps and their impact on EMRI gravitational-wave detection. Jumps are smaller for lower eccentricity orbits; since most EMRIs have small eccentricities when passing through resonances, we expect that the impact on detection will be small. Neglecting the effects of transient resonances leads to a loss of ~4% of detectable signals for an astrophysically motivated population of EMRIs.
Original languageEnglish
Article number012052
JournalJournal of Physics: Conference Series
Volume840
Issue numberconference 1
DOIs
Publication statusPublished - 1 Jun 2017

Keywords

  • gr-qc
  • astro-ph.HE

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