Accuracy of Estimating Highly Eccentric Binary Black Hole Parameters with Gravitational-wave Detections

László Gondán, Bence Kocsis, Péter Raffai, Z. Frei

Research output: Article

21 Citations (Scopus)

Abstract

Mergers of stellar-mass black holes on highly eccentric orbits are among the targets for ground-based gravitationalwave detectors, including LIGO, VIRGO, and KAGRA. These sources may commonly form through gravitationalwave emission in high-velocity dispersion systems or through the secular Kozai-Lidov mechanism in triple systems. Gravitational waves carry information about the binaries' orbital parameters and source location. Using the Fisher matrix technique, we determine the measurement accuracy with which the LIGO-VIRGO-KAGRA network could measure the source parameters of eccentric binaries using a matched filtering search of the repeated burst and eccentric inspiral phases of the waveform. We account for general relativistic precession and the evolution of the orbital eccentricity and frequency during the inspiral. We find that the signal-to-noise ratio and the parameter measurement accuracy may be significantly higher for eccentric sources than for circular sources. This increase is sensitive to the initial pericenter distance, the initial eccentricity, and the component masses. For instance, compared to a 30 M-30 M non-spinning circular binary, the chirp mass and sky-localization accuracy can improve by a factor of ∼129 (38) and ∼2 (11) for an initially highly eccentric binary assuming an initial pericenter distance of 20 Mtot (10 Mtot).

Original languageEnglish
Article number34
JournalAstrophysical Journal
Volume855
Issue number1
DOIs
Publication statusPublished - márc. 1 2018

Fingerprint

eccentrics
gravitational waves
estimating
eccentricity
LIGO (observatory)
source parameters
precession
signal-to-noise ratio
merger
orbitals
eccentric orbits
chirp
stellar mass
matrix
sky
bursts
waveforms
signal to noise ratios
detection
parameter

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Accuracy of Estimating Highly Eccentric Binary Black Hole Parameters with Gravitational-wave Detections. / Gondán, László; Kocsis, Bence; Raffai, Péter; Frei, Z.

In: Astrophysical Journal, Vol. 855, No. 1, 34, 01.03.2018.

Research output: Article

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