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Title: Model comparison from LIGO–Virgo data on GW170817’s binary components and consequences for the merger remnant

Journal Article · · Classical and Quantum Gravity
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GW170817 is the very first observation of gravitational waves originating from the coalescence of two compact objects in the mass range of neutron stars, accompanied by electromagnetic counterparts, and offers an opportunity to directly probe the internal structure of neutron stars. We perform Bayesian model selection on a wide range of theoretical predictions for the neutron star equation of state. For the binary neutron star hypothesis, we find that we cannot rule out the majority of theoretical models considered. In addition, the gravitational-wave data alone does not rule out the possibility that one or both objects were low-mass black holes. We discuss the possible outcomes in the case of a binary neutron star merger, finding that all scenarios from prompt collapse to long-lived or even stable remnants are possible. For long-lived remnants, we place an upper limit of 1.9 kHz on the rotation rate. If a black hole was formed any time after merger and the coalescing stars were slowly rotating, then the maximum baryonic mass of non-rotating neutron stars is at most 3.05 $$M_\odot$$, and three equations of state considered here can be ruled out. We obtain a tighter limit of 2.67 $$M_\odot$$ for the case that the merger results in a hypermassive neutron star.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF)
Contributing Organization:
The LIGO Scientific Collaboration and The Virgo Collaboration
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1603630
Journal Information:
Classical and Quantum Gravity, Vol. 37, Issue 4; ISSN 0264-9381
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 89 works
Citation information provided by
Web of Science

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Gravitational Radiation from Post-Newtonian Sources and Inspiralling Compact Binaries journal June 2006
Constraining neutron star tidal Love numbers with gravitational wave detectors text January 2007
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Binary Neutron Star Mergers: Dependence on the Nuclear Equation of State text January 2011
On the Mass Distribution and Birth Masses of Neutron Stars text January 2012
Measurability of the tidal polarizability of neutron stars in late-inspiral gravitational-wave signals text January 2012
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The Neutron Star Mass Distribution text January 2013
Robust parameter estimation for compact binaries with ground-based gravitational-wave observations using the LALInference software library text January 2014
Modeling the complete gravitational wave spectrum of neutron star mergers text January 2015
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Method for detection and reconstruction of gravitational wave transients with networks of advanced detectors text January 2015
Binary neutron-star mergers: a review of Einstein's richest laboratory text January 2016
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Modeling dynamical ejecta from binary neutron star mergers and implications for electromagnetic counterparts text January 2016
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Constraining the Maximum Mass of Neutron Stars From Multi-Messenger Observations of GW170817 text January 2017
Modeling GW170817 based on numerical relativity and its implications text January 2017
Using gravitational-wave observations and quasi-universal relations to constrain the maximum mass of neutron stars text January 2017
A long-lived remnant neutron star after GW170817 inferred from its associated kilonova text January 2017
Neutron skins and neutron stars in the multi-messenger era text January 2017
Inferring the population properties of binary neutron stars with gravitational-wave measurements of spin text January 2017
New constraints on radii and tidal deformabilities of neutron stars from GW170817 text January 2018
Causal Representations of Neutron-Star Equations of State text January 2018
Calibration of Advanced Virgo and Reconstruction of the Gravitational Wave Signal h(t) during the Observing Run O2 text January 2018
Relevance of tidal effects and post-merger dynamics for binary neutron star parameter estimation text January 2018
Search for gravitational waves from a long-lived remnant of the binary neutron star merger GW170817 text January 2018
Observing the post-merger signal of GW170817-like events with improved gravitational-wave detectors text January 2018
Constraint on the maximum mass of neutron stars using GW170817 event text January 2019
Observational constraints on hyperons in neutron stars text January 2005
Magnetized hypermassive neutron star collapse: a central engine for short gamma-ray bursts text January 2005
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Shape Coexistence and the Effective Nucleon-Nucleon Interaction text January 1999