The search for extraterrestrial civilizations in optical range - Methods, objects, results

Details The search for extraterrestrial civilizations in optical range - Methods, objects, results The search for extraterrestrial civilizations in optical range - Methods, objects, results

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997abos.conf..595b&link_type=abstract

Conference Paper, Astronomical and Biochemical Origins and the Search for Life in the Universe, IAU Colloquium 161, Publisher: B

Astronomy and Astrophysics

Astronomy

Extraterrestrial Intelligence, Visible Spectrum, Signal Detection, Emission Spectra, Brightness Distribution, Photochemical Reactions, Line Spectra, High Resolution, Photometers

Scientific paper

Prospects and possibilities of the search for signals of extraterrestrial civilizations in optical range are discussed. Two criteria of the artificial origin of an optical emission - the variations of its intensity, which have a time structure of a semiotic character, and the presence of narrow laser lines - are analyzed. For detection and study of these signals, we propose to investigate the astronomical objects under consideration with extremely high time resolution - 10 exp -7 s. To solve this problem we use a special hard/software photometrical complex, MANIA (Multichannel Analysis of Nanosecond Intensity Alterations), which consists of a photometer, a registration system which is a 'time-code' converter, a PC/AT 486 computer, and a tape recorder. Special statistical methods and programs for the search for and the analysis of any type of brightness variability of astronomical objects on a time scale of 10 exp -7 to 10 exp -2 s are described. Criteria of choice of objects to search for signals of extraterrestrial civilizations in their emission are discussed.

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