Distinguishing a stochastic gravitational-wave signal from correlated noise with joint parameter estimation: Fisher analysis for ground-based detectors
Distinguishing a stochastic gravitational-wave signal from correlated noise with joint parameter estimation: Fisher analysis for ground-based detectors
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通过联合参数估计区分随机引力波信号和相关噪声:地面探测器的费舍尔分析
DOI:
10.1103/physrevd.107.064055
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发表时间:
2023
影响因子:
5
通讯作者:
and Atsushi Taruya
中科院分区:
文献类型:
--
作者:
Yoshiaki Himemoto;Atsushi Nishizawa;and Atsushi Taruya
Search sensitivity to a stochastic gravitational-wave background (SGWB) is enhanced by cross-correlating detector signals. However, one of the most serious concerns is the environmental noise correlated between detectors. The global electromagnetic fields on the Earth, known as Schumann resonances, produce the correlated noise through the instrumental magnetic couplings. In this paper, we study the detectability of a SGWB in the presence of the correlated magnetic noise, using the Fisher analysis based on the analytical model of the correlated magnetic noise. We find that there is no significant degeneracy between the SGWB and noise parameters. Marginalizing over the correlated noise parameters degrades the constraint on each SGWB parameter by a factor ofat most in the four-detector case, irrespective of the strength of the magnetic coupling. We also confirm that the forecast results are robust against the variation of correlated noise parameters and can vary up to 40% in the realistic range of the coupling parameters for the second-generation detectors. However, ignoring the correlated noise in parameter estimation generally leads to a biased constraint on the SGWB parameters. If the coupling strength is twice as large as expected, this could result in a serious bias.
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DOI:
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发表时间:
2016
期刊:
影响因子:
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作者:
I. Kowalska;M. Bizouard;T. Bulik;N. Christensen;M. Coughlin;M. Gołkowski;J. Kubisz;A. Kulak;J. Mlynarczyk;F. Robinet;M. Rohde
通讯作者:
M. Rohde
影响因子:
3.5
作者:
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Zweizig, J.
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通讯作者:
E. Thrane
DOI:
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发表时间:
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期刊:
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作者:
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DOI:
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发表时间:
1952
期刊:
影响因子:
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作者:
W. O. Schumann
通讯作者:
W. O. Schumann