Properties of the Binary Neutron Star Merger GW170817
Abstract
On August 17, 2017, the Advanced LIGO and Advanced Virgo gravitationalwave detectors observed a lowmass compact binary inspiral. The initial sky localization of the source of the gravitationalwave 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 gravitationalwave 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 gravitationalwave source to a 90% credible region of
 Publication:

Physical Review X
 Pub Date:
 January 2019
 DOI:
 10.1103/PhysRevX.9.011001
 arXiv:
 arXiv:1805.11579
 Bibcode:
 2019PhRvX...9a1001A
 Keywords:

 General Relativity and Quantum Cosmology;
 Astrophysics  High Energy Astrophysical Phenomena
 EPrint:
 32 pages, 15 figures. Version 3 is the final published version