A signaling strategy for interstellar communication

Details A signaling strategy for interstellar communication A signaling strategy for interstellar communication

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jbis...31..108r&link_type=abstract

(British Interplanetary Society, Conference on Interstellar Travel and Communication, 2nd, London, England, Apr. 4, 5, 1977.) Br

Physics

Extraterrestrial Communication, Extraterrestrial Life, Interstellar Communication, Intelligence, Radio Signals

Scientific paper

Possibilities for transmitting messages advertising our presence to extraterrestrial civilizations are discussed with reference to the use of large radio telescopes. Among the possibilities, which include an array of 1,000 antenna dishes, each aimed full-time at a single star, the one considered most practical in terms of power and cost is a system of four telescopes, two in each hemisphere, which will sweep the plane of the ecliptic from east to west like a lighthouse beacon. Presumably, intelligent aliens will be listening in the frequency band of the 'water hole' (between H+ and OH-), and will have the patience to continue listening for a series of five minute intervals, the amount of time required for one antenna sweep in the proposed scheme.

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