Astronomers have summarized their search for partial Dyson fields of about five million stars in the Milky Way. They found seven interesting red dwarf-related candidates that require further testing. Article published In the journal Monthly Notice of the Royal Astronomical Society.
Opinion Dyson spheres proposed in the early 1960s by the physicist Freeman Dyson was that highly developed extraterrestrial civilizations are capable of creating large cocoons around their stars, which allow them to absorb the energy that the star ‘distributed and used effectively. By being Kardasheva scale Such a structure can be created by a civilization of the second type, while humanity has not even reached the level of civilization of the first type. Such objects can be detected by observing optically flexible radiation sources that simultaneously emit excessive amounts of infrared radiation that cannot be explained by natural processes, but so far no search program has led to find sure candidates for Dyson ranges.
A team of astronomers led by Matías Suazo from Uppsala University has published research results for Dyson field candidates as part of the Hephaestus Project. Earlier explorers received upper limits on the number of such objects (less than a hundred thousand sources), they have now presented the results of searches for partially completed Dyson spheres in a sample of about five million sources in data photometric of the Gaia DR3, 2MASS and AllWISE Catalogs containing observational data in optical and infrared ranges.
As the researchers analyzed the sample, they removed sources of contamination (young stars obscured by dust or stars that are somehow associated with dust nebulae) and sources of emission explained by natural processes. Astronomers also looked for objects whose spectral energy distributions were consistent with models of stars that have partially completed Dyson fields.
As a result, seven sources of interest related to red dwarfs remained. All of them show excess emission in the mid-infrared, which is poorly explained by astronomical processes, but which fits the model of Dyson spheres with temperatures from 100 to 700 kelvin and coefficients of coverage stellar from 0.1 to 0.9. So far, scientists are very cautious about the ability to explain the properties of these sources using astroengineering structures and they plan to confirm this connection using spectroscopic observations in the future, since these systems may contain young circumstellar disks.
We talked about how scientists tried to explain the behavior of one mysterious star in the Milky Way, and what does the Dyson field have to do with it? “The Tale of the Tubby Star Detective”.
2024-05-13 16:06:00
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