LISA Pathfinder 性能结果的深入分析：时间演化、噪声投影、物理模型及其对 LISA 的启示
天体物理仪器与方法
2024-09-05 v3
摘要
我们对 LISA Pathfinder 在其整个科学运行期间（约 500 天）的差分加速度性能进行了深入分析。我们发现：1) 主导加速度幅度谱密度 (ASD) 的布朗噪声（对于频率 ）的演化，与单一气体物种除气导致的压力衰减一致。2) 在 与 之间，加速度 ASD 表现出超出布朗噪声的 尾部，其幅度几乎恒定，在几天内有 的波动，且在整个任务期间没有特定的时间模式；3) 在所考虑的最低频率 处，ASD 显著偏离 行为，这是因为温度波动似乎调制了由除气模式的不对称性所维持的准静态压力梯度。我们还展示了将观测到的加速度噪声投影到潜在噪声源的结果，对于这些噪声源，我们有直接的关联测量或来自专门实验的定量估计。这些源约占 尾部噪声功率的 。最后，我们分析了剩余未解释部分的潜在来源，并确定了在 LISA 中可采取以控制这些来源的可能措施。
关键词
引用
@article{arxiv.2405.05207,
title = {In-depth analysis of LISA Pathfinder performance results: Time evolution, noise projection, physical models, and implications for LISA},
author = {M. Armano and H. Audley and J. Baird and P. Binetruy and M. Born and D. Bortoluzzi and E. Castelli and A. Cavalleri and A. Cesarini and V. Chiavegato and A. M. Cruise and D. Dal Bosco and K. Danzmann and M. De Deus Silva and I. Diepholz and G. Dixon and R. Dolesi and L. Ferraioli and V. Ferroni and E. D. Fitzsimons and M. Freschi and L. Gesa and D. Giardini and F. Gibert and R. Giusteri and C. Grimani and J. Grzymisch and I. Harrison and M. S. Hartig and G. Heinzel and M. Hewitson and D. Hollington and D. Hoyland and M. Hueller and H. Inchauspé and O. Jennrich and P. Jetzer and B. Johlander and N. Karnesis and B. Kaune and N. Korsakova and C. J. Killow and J. A. Lobo and J. P. Lopez-Zaragoza and R. Maarschalkerweerd and D. Mance and V. Martın and L. Martin-Polo and F. Martin-Porqueras and J. Martino and P. W. McNamara and J. Mendes and L. Mendes and N. Meshksar and M. Nofrarias and S. Paczkowski and M. Perreur-Lloyd and A. Petiteau and E. Plagnol and J. Ramos-Castro and J. Reiche and F. Rivas and D. I. Robertson and G. Russano and L. Sala and J. Slutsky and C. F. Sopuerta and T. Sumner and D. Texier and J. I. Thorpe and D. Vetrugno and S. Vitale and G. Wanner and H. Ward and P. Wass and W. J. Weber and L. Wissel and A. Wittchen and C. Zanoni and P. Zweifel},
journal= {arXiv preprint arXiv:2405.05207},
year = {2024}
}