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  Search for Eccentric Binary Neutron Star Mergers in the first and second observing runs of Advanced LIGO

Nitz, A. H., Lenon, A., & Brown, D. A. (2020). Search for Eccentric Binary Neutron Star Mergers in the first and second observing runs of Advanced LIGO. Astrophysical Journal, 890(1): 1. doi:10.3847/1538-4357/ab6611.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-09CB-C Version Permalink: http://hdl.handle.net/21.11116/0000-0006-09CF-8
Genre: Journal Article

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 Creators:
Nitz, Alexander H.1, Author              
Lenon , Amber, Author
Brown , Duncan A., Author
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE,General Relativity and Quantum Cosmology, gr-qc
 Abstract: We present a search for gravitational waves from merging binary neutron stars which have non-negligible eccentricity as they enter the LIGO observing band. We use the public Advanced LIGO data which covers the period from 2015 through 2017 and contains $\sim164$ days of LIGO-Hanford and LIGO-Livingston coincident observing time. The search was conducted using matched-filtering using the PyCBC toolkit. We find no significant binary neutron star candidates beyond GW170817, which has previously been reported by searches for binaries in circular orbits. We place a 90% upper limit of $\sim1700$ mergers $\textrm{Gpc}^{-3} \textrm{Yr}^{-1}$ for eccentricities $\lesssim 0.43$ at a dominant-mode gravitational-wave frequency of 10 Hz. The absence of a detection with these data is consistent with theoretical predictions of eccentric binary neutron star merger rates. Using our measured rate we estimate the sensitive volume of future gravitational-wave detectors and compare this to theoretical rate predictions. We find that, in the absence of a prior detection, the rate limits set by six months of Cosmic Explorer observations would constrain all current plausible models of eccentric binary neutron star formation.

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 Dates: 2019-12-112019-12-192020
 Publication Status: Published in print
 Pages: 7 pages, 3 figures, 1 table, supplemental materials at https://github.com/gwastro/eccentric-bns-search, revised to match version accepted by ApJ
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 Identifiers: arXiv: 1912.05464
DOI: 10.3847/1538-4357/ab6611
URI: http://arxiv.org/abs/1912.05464
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Title: Astrophysical Journal
Source Genre: Journal
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Pages: - Volume / Issue: 890 (1) Sequence Number: 1 Start / End Page: - Identifier: -