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arXiv 2602.13404astro-ph.EPphysics.pop-ph
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星际宜居带

The Interplanetary Habitable Zone

NASA Ames Research Center(美国国家航空航天局艾姆斯研究中心)

Caleb Scharf

AI总结:

本文提出了一种评估星际宜居带的多模式指标,并通过基于代理的模型探讨了星际生命扩散与资源利用之间的平衡。

摘要:

本文引入并探讨了适用于星际航行物种的系统性生命维持度(宜居性)度量概念。尽管对星际生命可能的操作方式(例如通过技术或利用目前未知的生物特性)持相对中立态度,但仍需对能量获取、轨道机动成本、辐射风险和资源需求做出一些假设。为评估星际宜居带(IHZ)开发了多模式的评价指标。同时开发了基于代理的模型,用于模拟星际生命在行星系统中的扩散并表征IHZ。对于太阳系,行星之间的资源权重决定了许多总体行为,包括从地球到月球、火星和小行星带的迁移顺序。与特普斯特-1系外行星系统的比较也指出了资源可用性与风险或成本因素(如辐射风险和轨道Delta-v成本)之间平衡的关键敏感性,这些因素决定了IHZ的结构。结果表明,我们的太阳系可能对星际航行物种有固有的、显著的优势,优于像特普斯特-1这样的系统。这种建模方法可能也适用于我们太阳系中的新兴太空经济。

英文摘要:

The concept of a system-wide measure of the sustainment of life (habitability) for space-faring interplanetary species is introduced and explored. Although largely agnostic to the details of how interplanetary life might operate (e.g., via technology or by utilizing organism traits that are, as of now, unknown to us), some assumptions must be made about energy harvesting, orbital mobility costs, radiation risks, and resource requirements. A multi-modal figure of merit is developed for evaluating an interplanetary habitable zone (IHZ). An agent-based model is also developed to simulate the dispersal of interplanetary life in a planetary system and characterize the IHZ. For the solar system, resource weightings between planetary bodies dictate many overall behaviors, including the sequence of migration from Earth to the Moon, Mars, and asteroid belt. Comparisons with the Trappist-1 exoplanetary system also point to critical sensitivities in the balance between resource availability and risk or cost factors (e.g., radiation risks and orbital Delta-v costs) that determine the structure of an IHZ. Results suggest that our solar system may have an inherent, and significant, advantage for a space-faring species over a system like Trappist-1. This modeling approach may also have application to emerging space economies in our own solar 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。

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