Summary: The Breakthrough Listen Initiative, the largest ever scientific research program aimed at finding evidence of alien civilizations, has conducted a search for artificial radio emission associated with Kepler-160, a system of four planets that includes the newly-discovered habitable-zone planet Kepler-160e.
Original author and publication date: Sergio Prostak – June 25, 2020
Futurizonte Editor’s Note: Are we looking for alien technosignatures hoping to find them or because we know they are there?
From the article:
Kepler-160 is approximately 3,141 light-years away toward the constellation of Lyra.
This Sun-like star is about 12% bigger than our Sun, just 1% more luminous, and is home to at least four massive planets: Kepler-160b, c, d and e.
The planets Kepler-160b, c and d are between 1.7 and 3.1 times the size of Earth and have orbital periods less than 50 days.
The outermost planet, Kepler-160e (also designated KOI-456.04), has a radius of 1.9 times that of the Earth and an orbital period of 378 days.
The alien world, found earlier this year in data from NASA’s Kepler Space Telescope, is in the habitable zone of the host star and has an estimated surface temperature of minus 28 degrees Celsius (minus 18 degrees Fahrenheit).
“This Earth-like planet candidate, given its ideal location in the habitable zone of its host star and edge-on orientation projected toward Earth, represents an ideal target for technosignature searches,” said Columbia University astronomer Karen Perez and colleagues.
The researchers observed the Kepler-160 system using the Robert C. Byrd Green Bank Telescope as part of the ongoing Breakthrough Listen search for alien technosignatures.
“We searched the radio frequency bands 1.1-1.9 GHz (L-band), 1.8-2.8 GHz (S-band), and 3.95-8 GHz (C-band) for narrowband Doppler-accelerated and wideband artificially-dispersed technosignatures,” they explained.