INPOP行星历表的演变和Bepi-Colombo模拟
Evolution of INPOP planetary ephemerides and Bepi-Colombo simulations
摘要：
本文详细介绍了INPOP最新的行星星历INPOP 20 a。我们测试的灵敏度与INPOP获得的太阳扁率测定不同模型的太阳核心旋转。我们还提出了新的评估可能的GRT违规与PPN参数$β$，$γ$和$\dotμ/μ$。利用一种新的选择可接受的替代星历表的方法，我们利用目前的行星数据样本，分别为$β-1$和$γ-1$提供了大约$7.16 \times 10^{-5}$和$7.49 \times 10^{-5}$的保守极限。我们还提出了模拟Bepi-Colombo距离跟踪数据及其对行星星历建设的影响。我们表明，使用未来的BC范围的观测应改善这些估计，特别是$γ$。最后，由于BC任务及其在GRT框架中的精确距离测量，探测太阳核心旋转的有趣前景似乎是可以实现的。
英文摘要：
We give here a detailed description of the latest INPOP planetary ephemerides INPOP20a. We test the sensitivity of the Sun oblateness determination obtained with INPOP to different models for the Sun core rotation. We also present new evaluations of possible GRT violations with the PPN parameters $β$,$γ$ and $\dotμ/μ$. With a new method for selecting acceptable alternative ephemerides we provide conservative limits of about $7.16 \times 10^{-5}$ and $7.49 \times 10^{-5}$ for $β-1$ and $γ-1$ respectively using the present day planetary data samples. We also present simulations of Bepi-Colombo range tracking data and their impact on planetary ephemeris construction. We show that the use of future BC range observations should improve these estimates, in particular $γ$. Finally, interesting perspectives for the detection of the Sun core rotation seem to be reachable thanks to the BC mission and its accurate range measurements in the GRT frame.
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