论文标题
丽莎重力波源在时变的银河随机背景下
LISA Gravitational Wave Sources in A Time-Varying Galactic Stochastic Background
论文作者
论文摘要
激光干涉仪空间天线（LISA）的数据分析的独特挑战是，在这一年和整个任务中，来自仪器噪声和天体物理源的噪声背景将发生明显变化。噪声水平的变化将按时间尺度与大多数信号在检测器敏感频段中花费的时间相当或短的时间。银河随机GW背景的幅度变化是银河系二进制的，因为天线模式相对于银河系中心旋转是噪声变化的特别重要组成部分。因此，丽莎对不同源类的敏感性将随着天空位置和时间的函数而变化。这种差异将影响整体信噪和通知效率，以搜索多通间的同行。
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.
