Mutual Detectability: A Targeted SETI Strategy That Avoids the SETI Paradox
Mutual Detectability: A Targeted SETI Strategy That Avoids the SETI Paradox
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DOI：
10.3847/1538-3881/abcc5f
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发表时间：
2020-10
期刊：
影响因子：
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通讯作者：
E. Kerins
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文献类型：
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作者：
E. Kerins
随着我们搜寻地外文明（SETI）的能力不断增强，人们对有争议的地外文明（METI）的兴趣也在增加。METI的支持者指出，如果所有文明都不使用METI，那么SETI就是徒劳的。我介绍了相互检测作为一个博弈论的战略，以增加有针对性的SETI的成功潜力。相互可探测性包括四条定律，它们确定了SETI参与者如何根据相互存在的相互证据相互参与。我认为，双方SETI参与者可以判断有更好的质量证据，或共同分母信息（CDI）的一方，有责任传输，以避免SETI Parabolism。在地球凌日区内的凌日系外行星构成了满足相互可探测性要求的目标子集。我认为内在的时间积分的凌日信号强度，对于地球是103 L ppm小时yr-1，作为合适的CDI。在半径为1的宜居带行星上的文明比我们有上级CDI，因此在相互可探测性框架下，有博弈论的动机（责任）进行传输。虽然传输L* > L恒星周围可居住行星的责任福尔斯落在我们身上，但考虑到相对恒星频率，主序星寿命和行星出现率意味着这样的系统可能是少数。对太阳下光度宿主周围的地球类似凌日行星的地球凌日区进行调查，将有助于有针对性的SETI计划，这些计划针对那些有博弈论动机向我们发送信号的文明。选择保持沉默，不参与METI对这些系统，并没有在这种情况下燃料的SETI Paralys的关注。
As our ability to undertake searches for extraterrestrial intelligence (SETI) grows, so does interest in the controversial endeavor of messaging extraterrestrial intelligence (METI). METI proponents point to the SETI Paradox—if all civilizations refrain from METI then SETI is futile. I introduce mutual detectability as a game-theoretic strategy to increase the success potential of targeted SETI. Mutual detectability comprises four laws that establish how SETI participants can engage each other based on mutual evidence of mutual existence. I argue that the party whom both SETI participants can judge to have better quality evidence, or common denominator information (CDI), has an onus to transmit to avoid the SETI Paradox. Transiting exoplanets within the Earth Transit Zone form a target subset that satisfies mutual detectability requirements. I identify the intrinsic time-integrated transit signal strength, which for Earth is 103 L⊙ ppm hours yr−1, as suitable CDI. Civilizations on habitable-zone planets of radius have superior CDI on us, and so under the mutual detectability framework have game-theory incentive (onus) to transmit. While the onus to transmit falls on us for habitable planets around L* > L⊙ stars, considerations of relative stellar frequency, main-sequence lifetime and planet occurrence rates mean that such systems are likely to be in a small minority. Surveys of the Earth Transit Zone for Earth-analog transiting planets around subsolar luminosity hosts would facilitate targeted SETI programs for civilizations who have game-theory incentive to transmit signals to us. A choice to remain silent, by not engaging in METI toward such systems, does not in this case fuel concerns of a SETI Paradox.