Optical Nanosecond-Scale Searches for Extraterrestrial Signals: The MANIA System and Time-Resolved Statistical Methods

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Beskin, Borisov, Komarova, Mitronova, Neizvestny, Plokhotnichenko, and Popova argue that intelligent civilizations could signal their presence in visible light through time-structured brightness variations and very narrow laser lines, and they propose a nanosecond-resolution search using the MANIA system—a fast photometer with a time-code converter, a PC/AT 486, and a tape recorder—along with specialized statistics to detect rapid brightness changes across 10^-7 to 10^-2 seconds and to guide target selection.

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The search for extraterrestrial civilizations in optical range - methods, objects, results
harvard.edu

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

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.