第九行星能被次相对论航天器引力探测到吗？
Can Planet Nine Be Detected Gravitationally by a Sub-Relativistic Spacecraft?
摘要：
行星9被提出来解释一些跨诺普图天体的轨道集群。最近，有人提议使用亚相对论航天器来间接探测行星9的引力影响。在这里，我们研究的阻力和电磁力施加在一个亚相对论航天器上的星际介质（ISM）的影响，并比较这些力量与9号行星引起的引力。我们发现，由于密度和磁场波动而产生的噪声将在亚相对论速度$v\gtrsim 0.001~c$下主导行星9的引力信号。然后，我们确定了克服ISM湍流的阻力和磁噪声所需的参数空间，并使9号行星的重力检测成为可能。最后，我们讨论了实际的策略，以减轻阻力和电磁力的影响。
英文摘要：
Planet 9 was proposed as an explanation for the clustering of orbits for some trans-Neuptunian objects. Recently, the use of a sub-relativistic spacecraft was proposed to indirectly probe Planet 9's gravitational influence. Here we study the effects of the drag and electromagnetic forces exerted on a sub-relativistic spacecraft by the interstellar medium (ISM) and compare these forces with the gravitational force induced by Planet 9. We find that the resulting noise due to density and magnetic fluctuations would dominate over Planet 9's gravitational signal at sub-relativistic speeds, $v\gtrsim 0.001~c$. We then identify the parameter space required to overcome the drag and magnetic noise from the ISM turbulence and enable the detection of Planet 9's gravity. Finally, we discuss practical strategies to mitigate the effect of the drag and electromagnetic forces.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
