Radiospectroscopic study of astrophysical photon source flares and the SETI

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Interstellar Communication, Microwave Transmission, Photons, Project Seti, Radio Sources (Astronomy), Radio Spectroscopy, Astrophysics, Milky Way Galaxy, Nasa Programs, Spacecraft Antennas, Stellar Flares, Transmitter Receivers

Scientific paper

Methods of interstellar communication are examined, noting the likelihood of frequencies around the water molecule band and with particular attention paid to the possibilities of communications by means of expanding photon shells from astrophysical events. The NASA project SETI will in the near term employ equipment for monitoring multiple stellar events simultaneously, and will concentrate on burst events which show peak emissions with repetitious, coherent signals. The time for receiving the signals from such events is calculated, based on a model of a source of an expanding photon shell, and the time of transit for the signal from earth to the star region of broadcast is considered for the transmittance of a return message. Further analyses are made for the probability of detecting interstellar signals as a function of the volume of space to be scanned, and the possibility of filtering the signals for microwave coherence.

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