When searching for a halfway decent Dyson sphere, we found 7 candidates from Gaia DR3, 2MASS, and WISE

Astronomers decided to look for partially completed Dyson spheres and other megastructures around the star. They concluded that half-hearted Dyson spheres and megastructures would be easily detected with telescopes. They conducted a fairly comprehensive search and found seven candidate stars. All candidate stars are white dwarfs. We also excluded stars where other astrophysical reasons might cause confusion. The best way to search for extraterrestrial intelligence is to theorize what our instruments can easily detect and then look for signs of it. The Milky Way contains between 100 billion and 400 billion stars and at least as many planets. If aliens tried what we have tried so far, they would not discover our civilization. The best way to search for extraterrestrial intelligence is to theorize what our instruments can easily detect and then look for signs of it. The Milky Way contains between 100 billion and 400 billion stars and at least as many planets. If aliens tried what we have tried so far, they would not discover our civilization. Dyson spheres are megastructures that could be built by advanced civilizations to harness the radiant energy of their host stars, and are, in principle, hidden in public data already collected as part of major astronomical surveys. represents a potential techno signature that may have been In this study, researchers present a comprehensive search for the partial Dyson sphere by analyzing optical and infrared observations from Gaia, 2MASS, and WISE. They developed a pipeline that uses multiple filters to identify potential candidates from a sample of 5 million objects and reject intruders. This pipeline includes a convolutional neural network to detect perturbations in WISE data. Finally, the pipeline identifies seven candidates that require further analysis. All of these objects are M dwarfs, and the observed excess infrared radiation cannot be easily explained by astrophysical phenomena. Freeman Dyson invented the Dyson ball idea in the 1960s. Advanced civilizations can build artificial structures around their host stars that absorb light. This hypothetical structure, later called a Dyson sphere, would allow energy to be harvested in the form of starlight. Collecting starlight could, in principle, yield a variety of observational signatures that could be captured with existing telescopes. These signatures include optical dimming of the parent star due to direct dimming or waste heat release from the structure. Most exploration efforts have focused on individual Targets a complete Dyson sphere. On the other hand, some have considered partial Dyson spheres (e.g. Juraku & Western 2004). IRAS scanned the sky in far-infrared light, providing data from approximately 250,000 point sources. Currently, astronomers rely on photometric surveys covering optical, near-infrared, and mid-infrared wavelengths, reaching target object counts of up to about 1 billion and enabling much larger exploration programs.

source: https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stae1186/7665761?login=false