Astronomy:2MASS 19281982-2640123
2MASS 19281982-2640123 is a Sun-like star located in the area of Sagittarius constellation where the Wow! Signal is most widely believed to have originated.[1][2] The star was identified in a 2022 paper as the most similar to the Sun out of the three solar analogs found inside the sky region.[3][4] Located 1,800 light years away, it was estimated to be only 130 light years away from Claudio Maccone's estimation where a communicative civilization is most likely to exist.[5]
The star has a right ascension of 19h 28m 19.8s, a declination of -26° 40' 12.59", an estimated temperature of 5,783 Kelvin, a radius of 0.99 solar radii, and a luminosity 1.0007 times that of the Sun.[6] The team used the Gaia Archive to identify another dozen of candidates to be Sun-like stars, but the estimations on their luminosity were unknown.[7]
Breakthrough listen search
As a response to the discovery, on May 21, 2022 Breakthrough Listen conducted the first targeted search for the Wow! Signal to find its source.[8] It also was its first collaboration between the Green Bank Telescope and the Allen Telescope Array (ATA) of the SETI Institute.[9]
Greenbank performed two 30-minute observations, the ATA did six 5-minute observations with its new beam-former backend, and both observatories observed a total of 9 minutes and 40 seconds at the same time.[10] The team used the turboSETI pipeline from 1–2 GHz to search for an artificial narrowband signal (2.79 Hz/1.91 Hz) with a drifting of ±4 Hz s−1.[11] No technosignature candidates were reportedly found.[12]
References
- ↑ "Famous 'alien' Wow! signal may have come from distant, sunlike star" (in en). 2022-05-24. https://www.space.com/wow-signal-origin-star.
- ↑ "Sun-like star identified as the potential source of the Wow! Signal" (in en). November 23, 2020. https://astronomy.com/news/2020/11/sun-like-star-identified-as-the-potential-source-of-the-wow-signal.
- ↑ "Astronomer may have detected the source of the famous extraterrestrial 'Wow!' signal" (in en). 2022-05-25. https://www.independent.co.uk/space/wow-signal-extraterrestrial-alien-life-planet-b2086879.html.
- ↑ "Did the Wow! signal come from this star? | Space | EarthSky" (in en-US). 2020-12-02. https://earthsky.org/space/source-of-wow-signal-in-1977-sunlike-star-2mass-19281982-2640123/.
- ↑ "An Introduction to the Statistical Drake Equation". Treath Report. https://www.dia.mil/FOIA/FOIA-Electronic-Reading-Room/FileId/170023/.
- ↑ Caballero, Alberto (2022). "An approximation to determine the source of the WOW! Signal" (in en). International Journal of Astrobiology 21 (3): 129–136. doi:10.1017/S1473550422000015. ISSN 1473-5504. Bibcode: 2022IJAsB..21..129C.
- ↑ Choi, Charles Q.. "45 years later, scientists hone in on[sic a mysterious alien signal's origin"] (in en). https://www.inverse.com/science/where-did-the-wow-signal-come-from.
- ↑ "1st Coordinated Green Bank Telescope/Allen Telescope Array Observes Possible Source of the WOW! Signal". https://www.seti.org/1st-coordinated-green-bank-telescopeallen-telescope-array-observes-possible-source-wow-signal.
- ↑ "No signs of alien life found near source of famous 'Wow!' signal" (in en). 2022-11-07. https://www.space.com/seti-wow-signal-search-no-life-signs.
- ↑ "Breakthrough Listen Search for the WOW! Signal". https://seti.berkeley.edu/wow/.
- ↑ Perez, Karen I.; Farah, Wael; Sheikh, Sofia Z.; Croft, Steve; Siemion, Andrew; Pollak, Alexander W.; Brzycki, Bryan; Cruz, Luigi F. et al. (2022-09-26). "Breakthrough Listen Search for the WOW! Signal*" (in en). Research Notes of the AAS 6 (9): 197. doi:10.3847/2515-5172/ac9408. ISSN 2515-5172. Bibcode: 2022RNAAS...6..197P.
- ↑ "EarthSky | The Wow! Signal: New search comes up empty" (in en-US). 2022-10-02. https://earthsky.org/space/wow-signal-breakthrough-listen-seti/.
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