Strategies for Maximizing Detection Rate in Radio SETI
نویسندگان
چکیده
The Search for Extraterrestrial intelligence (SETI) is a scientific and cultural effort seeking evidence of intelligent life beyond earth. Radio SETI observes the radio spectrum ''technosignatures" that could be produced by an advanced ET society. This work models as end-to-end system, focuses on narrow-band intentional transmissions. We look at strategies to maximize expected number detections per year (DPY) search. Assuming civilizations will associated with star systems, we want stars may observed one time. representative density, this requires maximizing search volume in cone defined detection range field view (FOV). parameter trades are modified from case where simply maximizes signal-to-noise ratio. Instead, joint optimization between FOV sensitivity needed. Some implications: 1) Instead focusing terrestrial microwave window 1-10 GHz, frequencies below 1 GHz optimal rate due larger view; 2) Arrays smaller dishes should favored compared single dish equivalent area; 3) Aperture arrays desirable their large potential FOV. Many telescopes under development provide both high FOV, offer much improved rates. Still higher DPY needed, however, achieve results reasonable time horizons, which possible greatly expanding computation capability next-generation wide-FOV antenna arrays.
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2021
ISSN: ['1538-3881', '0004-6256']
DOI: https://doi.org/10.3847/1538-3881/ac052f