GW170817 : Implications for the stochastic gravitational-wave background from compact binary coalescences

Abbott, B. P. and Birney, R. and Jawahar, S. and Lockerbie, N. A. and Reid, S. and Tokmakov, K. V., LIGO Scientific Collaboration, Virgo Collaboration (2018) GW170817 : Implications for the stochastic gravitational-wave background from compact binary coalescences. Physical Review Letters, 120. 091101. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.120.091101)

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Abstract

The LIGO Scientific and Virgo Collaborations have announced the event GW170817, the first detection of gravitational waves from the coalescence of two neutron stars. The merger rate of binary neutron stars estimated from this event suggests that distant, unresolvable binary neutron stars create a significant astrophysical stochastic gravitational-wave background. The binary neutron star component will add to the contribution from binary black holes, increasing the amplitude of the total astrophysical background relative to previous expectations. In the Advanced LIGO-Virgo frequency band most sensitive to stochastic backgrounds (near 25 Hz), we predict a total astrophysical background with amplitude ΩGW(f=25  Hz)=1.8+2.7−1.3×10−9 with 90% confidence, compared with ΩGW(f=25  Hz)=1.1+1.2−0.7×10−9 from binary black holes alone. Assuming the most probable rate for compact binary mergers, we find that the total background may be detectable with a signal-to-noise-ratio of 3 after 40 months of total observation time, based on the expected timeline for Advanced LIGO and Virgo to reach their design sensitivity.

ORCID iDs

Abbott, B. P., Birney, R., Jawahar, S. ORCID logoORCID: https://orcid.org/0000-0002-4945-691X, Lockerbie, N. A. ORCID logoORCID: https://orcid.org/0000-0002-1678-3260, Reid, S. and Tokmakov, K. V. ORCID logoORCID: https://orcid.org/0000-0002-2808-6593;
  • Item type:Article
    ID code:63816
    Dates:
    Date
    Event
    28 February 2018
    Published
    16 January 2018
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:23 Apr 2018 14:58
    Last modified:12 Nov 2024 04:53
    URI:https://strathprints.strath.ac.uk/id/eprint/63816
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