论文标题
低质量恒星的银河系定居作为费米悖论的分辨率
Galactic settlement of low-mass stars as a resolution to the Fermi paradox
论文作者
论文摘要
不断扩大的文明可能会在银河系中迅速传播，因此太阳系中没有外星人定居点意味着这种扩张主义文明不存在。这种论点通常被称为费米悖论，通常假设扩张将通过银河系统一进行，但并非所有恒星类型都对长期存在的文明而言同样有用。我们建议，低质量的恒星和K-dwarf恒星尤其是源自G狼系统的文明的理想迁移位置。我们使用Drake方程的修改形式，以表明可以在2 GYR中完成所有低质量恒星的扩展，其中包括膨胀波之间的等待时间，以允许合适的目的地星的接近接近。这将需要不超过〜0.3 ly的星际旅行能力来解决所有M型，并〜2 ly来解决所有k-warfs。在2 MYR内可能会发生更快的扩展，而旅行要求约为10 ly，以解决所有M型少量，并约50 ly来解决所有K型武器。搜索超级行星系统中的技术签名可以帮助对当今银河系中这种“低质量银河俱乐部”的存在放置限制。
An expanding civilization could rapidly spread through the galaxy, so the absence of extraterrestrial settlement in the solar system implies that such expansionist civilizations do not exist. This argument, often referred to as the Fermi paradox, typically assumes that expansion would proceed uniformly through the galaxy, but not all stellar types may be equally useful for a long-lived civilization. We suggest that low-mass stars, and K-dwarf stars in particular, would be ideal migration locations for civilizations that originate in a G-dwarf system. We use a modified form of the Drake Equation to show that expansion across all low-mass stars could be accomplished in 2 Gyr, which includes waiting time between expansion waves to allow for a close approach of a suitable destination star. This would require interstellar travel capabilities of no more than ~0.3 ly to settle all M-dwarfs and ~2 ly to settle all K-dwarfs. Even more rapid expansion could occur within 2 Myr, with travel requirements of ~10 ly to settle all M-dwarfs and ~50 ly to settle all K-dwarfs. The search for technosignatures in exoplanetary systems can help to place constraints on the presence of such a "low-mass Galactic Club" in the galaxy today.
