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

Gondán, László and Kocsis, Bence and Raffai, Péter and Frei, Zsolt (2018) Accuracy of Estimating Highly Eccentric Binary Black Hole Parameters with Gravitational-wave Detections. ASTROPHYSICAL JOURNAL, 855 (1). ISSN 1538-4357

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Abstract

Mergers of stellar-mass black holes on highly eccentric orbits are among the targets for ground-based gravitational-wave detectors, including LIGO, VIRGO, and KAGRA. These sources may commonly form through gravitational-wave 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-circle dot-30 M-circle dot non-spinning circular binary, the chirp mass and sky-localization accuracy can improve by a factor of similar to 129 (38) and similar to 2 (11) for an initially highly eccentric binary assuming an initial pericenter distance of 20M(tot) (10M(tot)).

Item Type: Article
Subjects: Q Science / természettudomány > QC Physics / fizika
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 06 Mar 2023 08:40
Last Modified: 06 Mar 2023 08:40
URI: http://real.mtak.hu/id/eprint/161441

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