ET候选站点记录的本地噪声对ET三角形配置下CBC引力波信号信噪比的影响
The impact of local noise recorded at the ET candidate sites on the signal to noise ratio of CBC gravitational wave signals for the ET triangle configuration
AI总结：
本研究评估了ET两个候选站点（撒丁岛和EMR）的本地环境噪声对低频CBC引力波信号信噪比的影响，发现撒丁岛表现与设计相当或更优，而EMR的Terziet站点噪声导致SNR性能显著退化。
摘要：
我们评估了站点相关噪声如何影响未来第三代引力波（GW）探测器爱因斯坦望远镜（ET）中致密双星并合（CBC）信号的信噪比（SNR）。ET的设计目前正推动科学界利用其设计灵敏度曲线，研究其对已知及可能未知的GW信号的科学潜力。然而，本地环境噪声可能对ET在低频段的灵敏度产生影响，从而影响低频CBC信号的SNR。因此，我们研究了在ET的两个候选站点——意大利撒丁岛和荷兰-比利时边境的默兹-莱茵欧洲区（EMR）——的环境噪声对ET灵敏度曲线的影响，并推断其对ET灵敏度曲线的影响以及低频CBC信号SNR如何受影响。我们发现，撒丁岛的结果与设计情况相当，甚至更优。另一方面，目前Terziet的EMR灵敏度曲线所对应的环境噪声导致SNR性能出现更严重的退化。
英文摘要：
We present an evaluation of how site dependent noise can affect the signal to noise ratio (SNR) of compact binary coalescence (CBC) signals in the future 3rd generation gravitational wave (GW) detector Einstein Telescope (ET). The design of ET is currently pushing the scientific community to study its scientific potential with respect to known, and possibly unexpected, GW signals using its design sensitivity curves. However, local ambient noise may have an impact on the ET sensitivity at low frequency and therefore affect the SNR of CBC signals at low frequency. Therefore, we study the impact of ambient noise on the ET sensitivity curve at the two sites candidate to host ET - Sardinia, in Italy, and the Euregio Meuse-Rhine (EMR) at the Netherlands-Belgium border - and infer the impact on the ET sensitivity curve and how the SNR of CBC signals at low frequencies is affected. We find that Sardinia shows results which are on par, if not better, than the design case. On the other hand, ambient noise for the current EMR sensitivity curve in Terziet causes a higher degradation of the SNR performances.
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