Is interstellar archeology possible? |
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| Institution: | 1. Observatório do Valongo, Universidade Federal do Rio de Janeiro-UFRJ, Ladeira Pedro Antônio 43, 20080-090 Rio de Janeiro, RJ, Brazil;2. Petrobras, Av. Henrique Valadares, 28, A1, 9th floor, 20231-030 Rio de Janeiro, RJ, Brazil;1. State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China;2. Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210046, China;3. School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China;1. Sonneberg Observatory, Sternwartestr. 32, 96515, Sonneberg, Germany;2. Brnikat Ltd, 19a Hauxton Road, Little Shelford, Cambridge, CB22 5HJ, United Kingdom;3. High Energy Physics Group, Department of Physics and Astronomy, University of Hawaii, Manoa 327, Watanabe Hall, 2505 Correa Road, Honolulu, HI, 96822, USA;1. Research Center for the Early Universe (RESCEU), School of Science, The University of Tokyo, Tokyo 113-0033, Japan;2. Department of Physics, School of Science, The University of Tokyo, Tokyo 113-0033, Japan;3. Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), TODIAS, WPI, The University of Tokyo, Chiba 277-8583, Japan |
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| Abstract: | Searching for signatures of cosmic-scale archeological artifacts such as Dyson spheres is an interesting alternative to conventional radio SETI. Uncovering such an artifact does not require the intentional transmission of a signal on the part of the original civilization. This type of search is called interstellar archeology or sometimes cosmic archeology. A variety of interstellar archeology signatures is discussed including non-natural planetary atmospheric constituents, stellar doping, Dyson spheres, as well as signatures of stellar, and galactic-scale engineering. The concept of a Fermi bubble due to interstellar migration is reviewed in the discussion of galactic signatures. These potential interstellar archeological signatures are classified using the Kardashev scale. A modified Drake equation is introduced. With few exceptions interstellar archeological signatures are clouded and beyond current technological capabilities. However SETI for so-called cultural transmissions and planetary atmosphere signatures are within reach. |
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