Expanding the SETI Frontier: 6.1 Million Stars in ALMA Commensal Searches at Millimeter Frequencies

To the point

Louisa Mason shows that using the Besançon Galactic Model to reinterpret radio telescope observations reveals about 6.1 million stars in the field of view—far more than Gaia catalogs count—and that commensal SETI with ALMA at millimeter and submillimeter frequencies expands the target pool and search space, even though no signals have been found.

Are aliens running out of places to hide? It turns out weve searched much more of the galaxy than we realized
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Are aliens running out of places to hide? It turns out weve searched much more of the galaxy than we realized

The millimeter and submillimeter radio bands remain almost completely unexplored for SETI, so this is really about opening up a new area of parameter space to search.