不等臂长条件下时间延迟干涉法的最优灵敏度曲线

Optimal sensitivity for unequal arm time-delay interferometry

发展了一种新算法,其能够不依赖于时间延迟干涉法基底构型的正交化过程,可直接得到最优灵敏度曲线;分别将其应用到第1代和第2代时间延迟干涉法.结果表明:尽管受不等臂长模型和不同基底选择的影响,但是最优灵敏度曲线仍展现出良好的鲁棒性;基底数量对最优灵敏度曲线有显著影响,当基底数由3增加到5时,灵敏度曲线获得了显著的优化,其中基底数为3时,在0.0010.100 Hz引力波频段内,不同基底的选择对最优灵敏度曲线影响较为显著.

A new algorithm can obtain optimal sensitivity curves directly,without relying on time-delay interferometry configuration orthogonalization process.When applied to both first-and second-generation time-delay interferometry,the sensitivity curves remain robust under various arm lengths and baseline configurations.When the base number is increased from 3 to 5,the sensitivity curve is significantly optimized.With only three bases and within the frequency range of 0.001 to 0.100 Hz,the selection of specific bases affects the performance of optimal sensitivity curve.