Improving LIGO calibration accuracy by using time-dependent filters to compensate for temporal variations
Improving LIGO calibration accuracy by using time-dependent filters to compensate for temporal variations
复制标题
通过使用瞬态滤波器补偿时间变化来提高 LIGO 校准精度
DOI：
10.1088/1361-6382/acabf6
复制
发表时间：
2023
影响因子：
3.5
通讯作者：
Wade, L
中科院分区：
文献类型：
--
作者：
Wade, M;Viets, A D;Chmiel, T;Stover, M;Wade, L
已知高级激光干涉仪引力波天文台（Advanced LIGO）干涉仪的响应随时间而变化（Tuyenbayev等人，2017级）。量子重力34 015002）。因此，干涉仪的精确校准必须跟踪和补偿校准模型参数的时间变化。这些变化在前三个先进的LIGO观测运行跟踪，其中一些补偿已在校准过程中实施。在第二次观测运行期间，对干涉仪响应进行乘法校正，同时以真实的时间和高延迟产生校准的应变数据。在第二次观测运行之后和整个第三次观测运行期间产生的高延迟校准中，将需要周期性滤波器更新的校正应用于校准-耦合腔极点频率的时间依赖性
The response of the Advanced Laser Interferometer Gravitational-wave Observatory (Advanced LIGO) interferometers is known to vary with time (Tuyenbayev et al 2017 Class. Quantum Grav. 34 015002). Accurate calibration of the interferometers must therefore track and compensate for temporal variations in calibration model parameters. These variations were tracked during the first three Advanced LIGO observing runs, and compensation for some of them has been implemented in the calibration procedure. During the second observing run, multiplicative corrections to the interferometer response were applied while producing calibrated strain data both in real time and in high latency. In a high-latency calibration produced after the second observing run and during the entirety of the third observing run, a correction requiring periodic filter updates was applied to the calibration–the time dependence of the coupled cavity pole frequency