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Title
GW170817: Implications for the Stochastic Gravitational-Wave Background from Compact Binary Coalescences
Author(s)
B.P. Abbott et al.강궁원배상욱
Publication Year
2018-02-28
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
ΩGWðf¼25HzÞ¼1.8 +2.7−1.3 ×10−9 with 90% confidence, compared with ΩGWðf¼25HzÞ¼1.1+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.
Keyword
GW170817; Stochastic Gravitational-Wave
Journal Title
PHYSICAL REVIEW LETTERS
Citation Volume
120
ISSN
0031-9007
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Appears in Collections:
7. KISTI 연구성과 > 학술지 발표논문
URI
https://repository.kisti.re.kr/handle/10580/14777
http://www.ndsl.kr/ndsl/search/detail/article/articleSearchResultDetail.do?cn=NART90652679
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