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Search for gravitational-wave signals associated with gamma-ray bursts during the second observing run of advanced LIGO and advanced Virgo

Citation

Siellez, K and The LIGO Scientific Collaboration, The Virgo Collaboration, and The IPN Collaboration, Search for gravitational-wave signals associated with gamma-ray bursts during the second observing run of advanced LIGO and advanced Virgo, The Astrophysical Journal, 886, (1) Article 75. ISSN 1538-4357 (2019) [Refereed Article]


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DOI: doi:10.3847/1538-4357/ab4b48

Abstract

We present the results of targeted searches for gravitational-wave transients associated with gamma-ray bursts during the second observing run of Advanced LIGO and Advanced Virgo, which took place from 2016 November to 2017 August. We have analyzed 98 gamma-ray bursts using an unmodeled search method that searches for generic transient gravitational waves and 42 with a modeled search method that targets compact-binary mergers as progenitors of short gamma-ray bursts. Both methods clearly detect the previously reported binary merger signal GW170817, with p-values of <9.3810−6 (modeled) and 3.110−4 (unmodeled). We do not find any significant evidence for gravitational-wave signals associated with the other gamma-ray bursts analyzed, and therefore we report lower bounds on the distance to each of these, assuming various source types and signal morphologies. Using our final modeled search results, short gamma-ray burst observations, and assuming binary neutron star progenitors, we place bounds on the rate of short gamma-ray bursts as a function of redshift for z≤1. We estimate 0.071.80 joint detections with Fermi-GBM per year for the 201920 LIGO-Virgo observing run and 0.153.90 per year when current gravitational-wave detectors are operating at their design sensitivities.

Item Details

Item Type:Refereed Article
Keywords:LIDO, gravitational waves
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:General relativity and gravitational waves
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Siellez, K (Dr Karelle Siellez)
ID Code:151011
Year Published:2019
Web of Science® Times Cited:18
Deposited By:Physics
Deposited On:2022-07-11
Last Modified:2022-07-11
Downloads:0

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