7 possible technosignatures.

[martin-w 3,276]

https://phys.org/news/2024-05-astronomers-dyson-spheres.html

They've published their results in the Monthly Notices of the Royal Astronomical Society. The research is titled "Project Hephaistos—II. Dyson sphere candidates from Gaia DR3, 2MASS, and WISE."

 

In the last cut, 368 sources survived. Of those, 328 were rejected as blends, 29 were rejected as irregulars, and four were rejected as nebulars. That left only seven potential Dyson spheres out of about 5 million initial objects, and the researchers are confident that those seven are legitimate.

Edited May 13 by martin-w

[martin-w 3,276]

Some interesting characteristics the seven candidates share. 

 

 

[dmwalker 613]

1 hour ago, martin-w said:

That left only seven potential Dyson spheres out of about 5 million initial objects, and the researchers are confident that those seven are legitimate.

Sort of:

We would like to stress that although our candidates display properties consistent with partial Dyson spheres, it is definitely premature to presume that the mid-infrared presented in these sources originated from them. The MIR data quality for these objects is typically quite low, and additional data is required to determine their nature.

[martin-w 3,276]

14 hours ago, dmwalker said:

Sort of:

We would like to stress that although our candidates display properties consistent with partial Dyson spheres, it is definitely premature to presume that the mid-infrared presented in these sources originated from them. The MIR data quality for these objects is typically quite low, and additional data is required to determine their nature.

 

Yes, they meant confident in terms of being confident they were candidates. 😀 Candidates, of course, doesn't mean they are trully Dyson Spheres or Dyson Swarms. Just "might" be. 

[HiFlyer 9,409]

I think shortly after this they identified several more candidates