On artificial transits feasibility and SETI
On artificial transits feasibility and SETI
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关于人工运输的可行性和 SETI
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
L. Arnold
中科院分区：
文献类型：
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作者：
L. Arnold
众所周知，行星的形状（扁率，环等）稍微修改了交通光曲线的形状。即将进行的空间飞行任务（Corot、Kepler）能够探测类地行星的凌日，如果人造行星大小的物体的形状与自然（行星）物体明显不同，就更有可能探测到它们的凌日。多个人造物体也会产生很容易从自然过境识别的过境光曲线。人工凌日，特别是多个物体的凌日，可用于传输清晰的引起注意的信号，其天空覆盖范围（效率）可与激光脉冲方法相媲美。虽然目前的人类技术无法达到，但建造地球大小的1微米厚的面具将需要今天地球上已经管理的能量和大量材料。还简要讨论了掩模向内轨道的迁移及其对小行星或流星体的保护。
It is known that the shape of a planet (oblateness, rings, etc.) slightly modifies the shape of the transit light curve. The forthcoming space missions (Corot, Kepler), able to detect the transit of Earth-like planets, could a fortiori also detect the transit of artificial planet-size objects if their shape is significantly different from a natural (planetary) object. Multiple artificial objects would also produce transit light curves easily recognizable from natural transits. Artificial transits, especially of multiple objects, could be used for the transmission of clear attention-getting signals, with a sky coverage (efficiency) comparable to that of the laser pulse method. Although out of reach of current human technologies, the building of an Earth-size 1-micron thick mask would require energy and bulk material amounts already managed on Earth today. The migration of the mask toward an inner orbit and its protection against asteroids or meteoroids are also briefly discussed.