星际激光信标假说与宇宙灯塔计划
The Interstellar Laser Beacons Hypothesis and the Cosmic Lighthouses Project
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中文总结 AI 辅助
探讨在资源有限场景下，为实现低成本高效通信，发送者应采用长寿命脉冲信标，尤其置于星际轨道上的特定激光信标。借助三种技术融合，可开展低成本微秒级天空调查，对二十秒差距内星际信标施加限制。
中文摘要 AI 辅助
在本文中，我们认为在现实且资源有限的场景下，意图以最低成本实现成功通信最大化的发送者会使用寿命极长的脉冲信标。此外，我们认为如果将技术更简单（微秒或毫秒脉冲而非超短飞秒脉冲）的可大规模生产的激光信标置于星际轨道上会更优。我们现有的广泛调查大多对微秒/毫秒级宇宙及此类信标视而不见。然而，我们表明三种技术（大规模并行处理、超高速CMOS探测器和宽带、可大规模生产的衍射折射透镜）的融合为低成本的微秒级天空调查提供了一个令人兴奋的机会。这样的调查在天体物理学上很有吸引力，即使使用低成本望远镜，也能在二十秒差距内对星际信标施加体积完整的限制。
英文摘要
In this paper, we argue that in a realistic, resource-limited scenario senders whose intent is to maximize successful communication at the lowest cost will utilize very long-lived, pulsed beacons. Further, we argue that mass-producible laser beacons with simpler technology ($μ$s or ms pulses instead of ultrashort fs pulses) are more optimal if placed on interstellar orbits. Our extensive, existing surveys are mostly blind to the $μ$s/ms-second universe and to such beacons. We show, however, that the convergence of three technologies (massively parallel processing, ultra high-speed CMOS detectors, and broadband, mass-producible diffractive-refractive lenses) now offer an exciting opportunity for a low-cost survey of the $μ$second sky. Such survey would be astrophysically compelling and, with even low-cost telescopes, could place volume-complete constraints on interstellar beacons within twenty parsecss.
