Annual modulation of the galactic binary confusion noise background and LISA data analysis
Annual modulation of the galactic binary confusion noise background and LISA data analysis
复制标题
银河双星混淆噪声背景的年度调制和LISA数据分析
DOI：
10.1103/physrevd.69.123005
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发表时间：
2004
影响因子：
5
通讯作者：
N. Seto
中科院分区：
文献类型：
--
作者：
N. Seto
我们研究了银河系混淆噪声背景的各向异性及其对丽莎数据分析的影响。丽莎有两个与低频区域相关的引力波信号数据流。由于背景的各向异性，它们的混淆噪声的矩阵具有非对角分量，并且强烈地依赖于检测器平面的取向。我们发现天空平均的混淆噪声水平S（f）在3个月内可以变化2倍，当丽莎的轨道位置在春分或秋分附近时达到最小值。
We study the anisotropies of the galactic confusion noise background and its effects on LISA data analysis. LISA has two data streams of gravitational wave signals relevant for the low frequency regime. Because of the anisotropies of the background, the matrix for their confusion noises has off-diagonal components and depends strongly on the orientation of the detector plane. We find that the sky-averaged confusion noise level $\sqrt{S(f)}$ could change by a factor of 2 in 3 months and would be minimum when the orbital position of LISA is around either the spring or autumn equinox.