标题： LISA 在变化的银河随机背景中的引力波源 显示英文标题

标题： LISA Gravitational Wave Sources in A Time-Varying Galactic Stochastic Background

摘要： 数据分析中激光干涉空间天线（LISA）的一个独特挑战是，仪器噪声和天体物理源的噪声背景将在一年内和整个任务期间发生显著变化。噪声水平的变化将在与探测器敏感带中信号停留时间相当或更短的时间尺度上发生。随着天线图案相对于银河系中心旋转，来自银河系双星的银河系随机引力波背景的幅度变化是噪声变化的一个特别显著的组成部分。因此，LISA对不同源类的灵敏度将随天空位置和时间而变化。这种变化将影响整体信噪比以及向电磁观测者发出警报的效率，以寻找多信使对应物。 显示英文摘要

摘要： A unique challenge for data analysis with the Laser Interferometer Space Antenna (LISA) is that the noise backgrounds from instrumental noise and astrophysical sources will change significantly over both the year and the entire mission. Variations in the noise levels will be on time scales comparable to, or shorter than, the time most signals spend in the detector's sensitive band. The variation in the amplitude of the galactic stochastic GW background from galactic binaries as the antenna pattern rotates relative to the galactic center is a particularly significant component of the noise variation. LISA's sensitivity to different source classes will therefore vary as a function of sky location and time. The variation will impact both overall signal-to-noise and the efficiency of alerts to EM observers to search for multi-messenger counterparts.