论文标题
新的高精度LLR数据的好处用于确定相对论参数
Benefit of New High-Precision LLR Data for the Determination of Relativistic Parameters
论文作者
论文摘要
自1969年以来，各种观测值收集了月球激光射程（LLR）数据，并通过不同的分析组进行了分析。近年来，进行了较大的望远镜（阿波罗）和红外波长（OCA）的观察结果，从而使精确的LLR数据在月球轨道上更好地分布了，并且在月球上观察到的重新反射器。对于LLR分析中的各种研究，这是一个很大的优势。这项研究的目的是评估新LLR数据的好处，以确定相对论参数。在这里，我们显示了相对论参数的当前结果，例如引力常数的可能时间变化$ \ dot {g}/g_0 =（-5.0 \ pm 9.6）\ times 10^{ - 15} \，\ Mathrm {yrm {yr}^{yr}^{ - 1} $， $Δ\ left（m_g/m_i \右）_ {\ mathrm {em}} =（-2.1 \ pm 2.4）\ times10^{ - 14} $和ppn参数$β-1 =（6.2 \ pm 7.2 \ pm 7.2） 10^{ - 4} $。结果表明，各种参数的准确性有显着提高，这主要是由于月球轨道的更好覆盖范围，更好的测量值分布在月球上反射器上，以及最后但并非最不重要的一点是，数据的准确性更高。在估计的准确性中，未发现对爱因斯坦理论的侵犯，结果设定了改善不同效果的限制。
Since 1969, Lunar Laser Ranging (LLR) data have been collected by various observatories and analysed by different analysis groups. In the recent years, observations with bigger telescopes (APOLLO) and at infra-red wavelength (OCA) are carried out, resulting in a better distribution of precise LLR data over the lunar orbit and the observed retro-reflectors on the Moon. This is a great advantage for various investigations in the LLR analysis. The aim of this study is to evaluate the benefit of the new LLR data for the determination of relativistic parameters. Here we show current results for relativistic parameters like a possible temporal variation of the gravitational constant $\dot{G}/G_0 = (-5.0 \pm 9.6) \times 10^{-15} \, \mathrm{yr}^{-1}$, the equivalence principle with $Δ\left(m_g/m_i\right)_{\mathrm{EM}} = (-2.1 \pm 2.4)\times10^{-14}$ and the PPN parameters $β-1 = (6.2 \pm 7.2) \times 10^{-5}$ and $γ-1 = (1.7 \pm 1.6) \times 10^{-4}$. The results show a significant improvement in the accuracy of the various parameters, mainly due to better coverage of the lunar orbit, better distribution of measurements over the lunar retro-reflectors, and last but not least, higher accuracy of the data. Within the estimated accuracies, no violation of Einstein's theory is found and the results set improved limits for the different effects.
