Signal Synchronization Strategies and Time Domain SETI with Gaia DR3
Spatiotemporal techniques for signal coordination with actively transmitting extraterrestrial civilizations, without the need for prior communication, can constrain technosignature searches to a significantly smaller coordinate space. With the variable star catalog from Gaia Data Release 3, we explo...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astronomical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-3881/acde79 |
| _version_ | 1797697179301707776 |
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| author | Andy Nilipour James R. A. Davenport Steve Croft Andrew P. V. Siemion |
| author_facet | Andy Nilipour James R. A. Davenport Steve Croft Andrew P. V. Siemion |
| author_sort | Andy Nilipour |
| collection | DOAJ |
| description | Spatiotemporal techniques for signal coordination with actively transmitting extraterrestrial civilizations, without the need for prior communication, can constrain technosignature searches to a significantly smaller coordinate space. With the variable star catalog from Gaia Data Release 3, we explore two related signaling strategies: the SETI Ellipsoid, and that proposed by Seto, which are both based on the synchronization of transmissions with a conspicuous astrophysical event. This data set contains more than 10 million variable star candidates with light curves from the first three years of Gaia’s operational phase, between 2014 and 2017. Using four different historical supernovae as source events, we find that less than 0.01% of stars in the sample have crossing times, the times at which we would expect to receive synchronized signals on Earth, within the date range of available Gaia observations. For these stars, we present a framework for technosignature analysis that searches for modulations in the variability parameters by splitting the stellar light curve at the crossing time. |
| first_indexed | 2024-03-12T03:36:33Z |
| format | Article |
| id | doaj.art-3d3b16566dfb4b5eab45475ce536dfcc |
| institution | Directory Open Access Journal |
| issn | 1538-3881 |
| language | English |
| last_indexed | 2024-03-12T03:36:33Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj.art-3d3b16566dfb4b5eab45475ce536dfcc2023-09-03T13:08:50ZengIOP PublishingThe Astronomical Journal1538-38812023-01-0116627910.3847/1538-3881/acde79Signal Synchronization Strategies and Time Domain SETI with Gaia DR3Andy Nilipour0https://orcid.org/0000-0002-5956-5167James R. A. Davenport1https://orcid.org/0000-0002-0637-835XSteve Croft2https://orcid.org/0000-0003-4823-129XAndrew P. V. Siemion3Department of Astronomy, Yale University , Steinbach Hall, 52 Hillhouse Ave, New Haven, CT 06511, USA ; andy.nilipour@yale.edu; Radio Astronomy Lab, University of California , Berkeley, 501 Campbell Hall 3411, Berkeley, CA 94720, USADepartment of Astronomy, University of Washington , Box 351580, Seattle, WA 98195, USARadio Astronomy Lab, University of California , Berkeley, 501 Campbell Hall 3411, Berkeley, CA 94720, USA; SETI Institute , Mountain View, California, USARadio Astronomy Lab, University of California , Berkeley, 501 Campbell Hall 3411, Berkeley, CA 94720, USA; SETI Institute , Mountain View, California, USA; Jodrell Bank Centre for Astrophysics (JBCA), Department of Physics & Astronomy, Alan Turing Building, The University of Manchester , M13 9PL, UK; University of Malta , Institute of Space Sciences and Astronomy, MaltaSpatiotemporal techniques for signal coordination with actively transmitting extraterrestrial civilizations, without the need for prior communication, can constrain technosignature searches to a significantly smaller coordinate space. With the variable star catalog from Gaia Data Release 3, we explore two related signaling strategies: the SETI Ellipsoid, and that proposed by Seto, which are both based on the synchronization of transmissions with a conspicuous astrophysical event. This data set contains more than 10 million variable star candidates with light curves from the first three years of Gaia’s operational phase, between 2014 and 2017. Using four different historical supernovae as source events, we find that less than 0.01% of stars in the sample have crossing times, the times at which we would expect to receive synchronized signals on Earth, within the date range of available Gaia observations. For these stars, we present a framework for technosignature analysis that searches for modulations in the variability parameters by splitting the stellar light curve at the crossing time.https://doi.org/10.3847/1538-3881/acde79TechnosignaturesAstrobiologySearch for extraterrestrial intelligenceAstrometry |
| spellingShingle | Andy Nilipour James R. A. Davenport Steve Croft Andrew P. V. Siemion Signal Synchronization Strategies and Time Domain SETI with Gaia DR3 The Astronomical Journal Technosignatures Astrobiology Search for extraterrestrial intelligence Astrometry |
| title | Signal Synchronization Strategies and Time Domain SETI with Gaia DR3 |
| title_full | Signal Synchronization Strategies and Time Domain SETI with Gaia DR3 |
| title_fullStr | Signal Synchronization Strategies and Time Domain SETI with Gaia DR3 |
| title_full_unstemmed | Signal Synchronization Strategies and Time Domain SETI with Gaia DR3 |
| title_short | Signal Synchronization Strategies and Time Domain SETI with Gaia DR3 |
| title_sort | signal synchronization strategies and time domain seti with gaia dr3 |
| topic | Technosignatures Astrobiology Search for extraterrestrial intelligence Astrometry |
| url | https://doi.org/10.3847/1538-3881/acde79 |
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