用于星际通信的恒星引力透镜工程与微扰SETI
Stellar Gravitational Lens Engineering for Interstellar Communication and Artifact SETI
摘要：
最近的几项研究提出了“恒星中继”传输系统，其中位于恒星引力透镜焦点的航天器在传出或传入星际传输的增益方面实现了戏剧性的提升。我们研究了恒星中继系统的一些工程要求，评估了引力中继的长期可持续性，并描述了必须积极应对的扰动和漂移，以保持中继星目标对准。中继站-太阳-目标对准的主要扰动是太阳向内的引力和行星对太阳的反射运动。这些接近。m/s/yr的加速度可以用现代推进系统在长达一个世纪的时间尺度上抵消。这种检查也是相关的望远镜设计，旨在使用太阳作为一个聚焦元件。此外，我们还研究了人工智能搜索的前景，以观察放置在太阳周围的外星智慧恒星中继，并建议某些附近的恒星相对不受行星系统的干扰，作为恒星中继通信系统的有利节点。
英文摘要：
Several recent works have proposed "stellar relay" transmission systems in which a spacecraft at the focus of a star's gravitational lens achieves dramatic boosts in the gain of an outgoing or incoming interstellar transmission. We examine some of the engineering requirements of a stellar relay system, evaluate the long-term sustainability of a gravitational relay, and describe the perturbations and drifts that must be actively countered to maintain a relay-star-target alignment. The major perturbations on a relay-Sun-target alignment are the inwards gravity of the Sun and the reflex motion of the Sun imparted by the planets. These approx. m/s/yr accelerations can be countered with modern propulsion systems over century-long timescales. This examination is also relevant for telescope designs aiming to use the Sun as a focusing element. We additionally examine prospects for an artifact SETI search to observe stellar relays placed around the Sun by an extraterrestrial intelligence and suggest certain nearby stars that are relatively unperturbed by planetary systems as favorable nodes for a stellar relay communications system.
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。
