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Mathematical encoding within multiresonant planetary systems as SETI beacons
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Clement, Matthew S., Raymond, Sean N., Veras, Dimitri and Kipping, David (2022) Mathematical encoding within multiresonant planetary systems as SETI beacons. Monthly Notices of the Royal Astronomical Society, 513 (4). pp. 4945-4950. doi:10.1093/mnras/stac1234 ISSN 0035-8711.
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Official URL: https://doi.org/10.1093/mnras/stac1234
Abstract
How might an advanced alien civilization manipulate the orbits within a planetary system to create a durable signpost that communicates its existence? While it is still debated whether such a purposeful advertisement would be prudent and wise, we propose that mean-motion resonances between neighboring planets -- with orbital periods that form integer ratios -- could in principle be used to encode simple sequences that one would not expect to form in nature. In this Letter we build four multi-resonant planetary systems and test their long-term orbital stability. The four systems each contain 6 or 7 planets and consist of: (i) consecutive integers from 1 to 6; (ii) prime numbers from 2 to 11; (iii) the Fibonacci sequence from 1 to 13; and (iv) the Lazy Caterer sequence from 1 to 16. We built each system using N-body simulations with artificial migration forces. We evaluated the stability of each system over the full 10 Gyr integration of the Sun's main sequence phase. We then tested the stability of these systems for an additional 10 Gyr, during and after post-main sequence evolution of the central stars (assumed to be Sun-like) to their final, white dwarf phase. The only system that was destabilized was the consecutive integer sequence (system i). The other three sequences therefore represent potential SETI beacons.
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QB Astronomy | ||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
| Library of Congress Subject Headings (LCSH): | Planetary systems , Life on other planets, Interstellar communication, Interstellar communication -- Mathematical models | ||||||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||||
| Publisher: | Oxford University Press | ||||||||
| ISSN: | 0035-8711 | ||||||||
| Official Date: | 6 May 2022 | ||||||||
| Dates: |
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| Volume: | 513 | ||||||||
| Number: | 4 | ||||||||
| Page Range: | pp. 4945-4950 | ||||||||
| DOI: | 10.1093/mnras/stac1234 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Reuse Statement (publisher, data, author rights): | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2022 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Copyright Holders: | The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society | ||||||||
| Date of first compliant deposit: | 4 May 2022 | ||||||||
| Date of first compliant Open Access: | 4 May 2022 | ||||||||
| RIOXX Funder/Project Grant: |
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