Detecting Technosignatures from Earth-scale Civilizations
Assuming civilizations have similar interplanetary communications and radar capability to NASA’s Deep Space Network, what is the feasibility of intercepting their communications? Interplanetary conjunctions between Earth-like exoplanets, their stars, and other planets in their systems provide one of...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/acf56c |
| _version_ | 1827787800020254720 |
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| author | Reza Ashtari |
| author_facet | Reza Ashtari |
| author_sort | Reza Ashtari |
| collection | DOAJ |
| description | Assuming civilizations have similar interplanetary communications and radar capability to NASA’s Deep Space Network, what is the feasibility of intercepting their communications? Interplanetary conjunctions between Earth-like exoplanets, their stars, and other planets in their systems provide one of the most unique and pragmatic opportunities for detecting technosignatures. While eavesdropping on terrestrial communications becomes limited by a planet’s rotation, the beams of satellite communications and interplanetary radar transmissions are tracked, providing the most persistent and powerful opportunity for signal interception. In this study, we present a framework for assessing exoplanet habitability and establishing quantitative bounds for detecting Earth-scale technosignatures from Earth-like planets. These constraints for time, frequency, sky positions, and observatory sensitivity provide recommended observational guidelines for using state-of-the-art and future ground-based radio observatories toward technosignature detection. Applying this framework, 16 exoplanet targets are proposed for radio observation. |
| first_indexed | 2024-03-11T16:56:06Z |
| format | Article |
| id | doaj.art-2d51d394691a4cffafd9ff46c624eb87 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-11T16:56:06Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-2d51d394691a4cffafd9ff46c624eb872023-10-20T17:32:59ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0195711510.3847/1538-4357/acf56cDetecting Technosignatures from Earth-scale CivilizationsReza Ashtari0https://orcid.org/0000-0001-8943-9148The Johns Hopkins University Applied Physics Laboratory , 11100 Johns Hopkins Road, Laurel, MD 20723, USAAssuming civilizations have similar interplanetary communications and radar capability to NASA’s Deep Space Network, what is the feasibility of intercepting their communications? Interplanetary conjunctions between Earth-like exoplanets, their stars, and other planets in their systems provide one of the most unique and pragmatic opportunities for detecting technosignatures. While eavesdropping on terrestrial communications becomes limited by a planet’s rotation, the beams of satellite communications and interplanetary radar transmissions are tracked, providing the most persistent and powerful opportunity for signal interception. In this study, we present a framework for assessing exoplanet habitability and establishing quantitative bounds for detecting Earth-scale technosignatures from Earth-like planets. These constraints for time, frequency, sky positions, and observatory sensitivity provide recommended observational guidelines for using state-of-the-art and future ground-based radio observatories toward technosignature detection. Applying this framework, 16 exoplanet targets are proposed for radio observation.https://doi.org/10.3847/1538-4357/acf56cExoplanetsTechnosignaturesRadio astronomy |
| spellingShingle | Reza Ashtari Detecting Technosignatures from Earth-scale Civilizations The Astrophysical Journal Exoplanets Technosignatures Radio astronomy |
| title | Detecting Technosignatures from Earth-scale Civilizations |
| title_full | Detecting Technosignatures from Earth-scale Civilizations |
| title_fullStr | Detecting Technosignatures from Earth-scale Civilizations |
| title_full_unstemmed | Detecting Technosignatures from Earth-scale Civilizations |
| title_short | Detecting Technosignatures from Earth-scale Civilizations |
| title_sort | detecting technosignatures from earth scale civilizations |
| topic | Exoplanets Technosignatures Radio astronomy |
| url | https://doi.org/10.3847/1538-4357/acf56c |
| work_keys_str_mv | AT rezaashtari detectingtechnosignaturesfromearthscalecivilizations |