论文标题
太阳能振荡对天气范围加速度噪声的影响
Effect of solar free oscillations on TianQin's range acceleration noise
论文作者
论文摘要
天气是一项拟议的基于空间的重力波检测器任务，要在高地球轨道上部署和操作。作为[Zhang等人的续集。物理。 Rev. D 103，062001（2021）]，我们研究了Tianqin范围加速度中的一种``轨道噪声''，这是由与太阳能无振荡相关的重力扰动引起的。这种振荡的频率通常在天气的测量带中为0.1 MHz-1 Hz，而干扰水平需要仔细评估。通过使用高精度轨道繁殖并将太阳的时间变量$ j_2 $添加到详细的重力场模型中，我们检查了频域中的效果，并表明预计太阳能无振荡噪声将比单个链接的噪声要求低两个，因此对任务的影响很小。
TianQin is a proposed space-based gravitational-wave detector mission to be deployed and operated in high Earth orbits. As a sequel to [Zhang et al. Phys. Rev. D 103, 062001 (2021)], we investigate a type of ``orbital noise'' in TianQin's range acceleration that is caused by gravitational perturbation associated with solar free oscillations. Frequencies of such oscillations are typically within TianQin's measurement band of 0.1 mHz--1 Hz, and the disturbance level needs careful assessment. By using high-precision orbit propagation and adding the Sun's time-variable oblateness $J_2$ to detailed gravity-field models, we examine the effect in the frequency domain and show that the solar free oscillation noise is expected to be two orders of magnitude lower than the noise requirement on single links and hence has little impact on the mission.
