University of Tasmania
Browse
Siellez - Properties of the Binary.pdf (3.67 MB)

Properties of the Binary Neutron Star Merger GW170817

Download (3.67 MB)
journal contribution
posted on 2023-05-21, 11:07 authored by Abbott, BP, Abbott, R, Karelle SiellezKarelle Siellez, Zweizig, J
On August 17, 2017, the Advanced LIGO and Advanced Virgo gravitational-wave detectors observed a low-mass compact binary inspiral. The initial sky localization of the source of the gravitational-wave signal, GW170817, allowed electromagnetic observatories to identify NGC 4993 as the host galaxy. In this work, we improve initial estimates of the binary’s properties, including component masses, spins, and tidal parameters, using the known source location, improved modeling, and recalibrated Virgo data. We extend the range of gravitational-wave frequencies considered down to 23 Hz, compared to 30 Hz in the initial analysis. We also compare results inferred using several signal models, which are more accurate and incorporate additional physical effects as compared to the initial analysis. We improve the localization of the gravitational-wave source to a 90% credible region of 16  deg2. We find tighter constraints on the masses, spins, and tidal parameters, and continue to find no evidence for nonzero component spins.

History

Publication title

Physical Review X

Volume

9

Article number

011001

Number

011001

Pagination

1-32

ISSN

2160-3308

Department/School

School of Natural Sciences

Publisher

American Physical Society

Place of publication

United States

Rights statement

© 2019, The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Repository Status

  • Open

Socio-economic Objectives

Expanding knowledge in the physical sciences

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC