High-Frequency SETI with ALMA: Stellar Bycatch and Expanding the Search Space

To the point

Archival high-frequency millimeter and submillimeter data can be repurposed to search for signs of alien technology, and Louisa Mason with Michael Garrett, Andrew Siemion, and Kelvin Wandia show no detections yet but reveal the unexpected stellar bycatch — many more stars are in view than previously thought — and argue that combining galactic modeling with high-frequency data broadens SETI and should guide future surveys.