GW170817: Implications for the Stochastic Gravitational-Wave Background from Compact Binary Coalescences
Name
PhysRevLett.120.091101.pdf
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Author(s)
LIGO Scientific Collaboration
Virgo Collaboration
Date Issued
February 2018
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Abbott, B. P. et al. “GW170817: Implications for the Stochastic Gravitational-Wave Background from Compact Binary Coalescences.” Physical Review Letters 120, 9 (February 2018): 091101 © 2018 American Physical Society
Version
Final published version
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[subscript -1.3][superscript +2.7]×10[superscript -9] with 90% confidence, compared with ΩGW(f=25 Hz)=1.1[subscript -0.7][superscript +1.2]×10[superscript -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.
MIT Department
LIGO (Observatory : Massachusetts Institute of Technology)
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DOI of Published Version
https://doi.org/10.1103/PHYSREVLETT.120.091101
