Physics
Scientific paper
Sep 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jbis...30..341g&link_type=abstract
British Interplanetary Society, Journal (Interstellar Studies), vol. 30, Sept. 1977, p. 341-343.
Physics
Extraterrestrial Life, Interstellar Communication, Milky Way Galaxy, Signal Detection, Broadcasting, Radio Communication, Radio Signals
Scientific paper
A description is presented of a broadcast strategy which could be used by an advanced civilization to maximize the number of recipients of its signals and to minimize the time required for signal detection. An isotropic signal would be easy to find if originated at a deducible point in space, specified for all observers by some commonly perceived structural feature of the general environment. Lederberg (1973) has suggested the Galactic center as such a message source. However, no obvious extraterrestrial intelligence signals have been observed in extensive observations of the core region. It is suggested that an isotropic signal source located at some point on the Galactic axis would be 'easy to find' if a particular z-direction distance from the principal H I plane can be specified by a fundamental structure of the Galaxy. Suitable specifications are discussed.
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