Full-sky survey searching for ultra-narrow-band artificial CW signals: analysis of the results of Project META

Details Full-sky survey searching for ultra-narrow-band artificial CW signals: analysis of the results of Project META Full-sky survey searching for ultra-narrow-band artificial CW signals: analysis of the results of Project META

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2704...16l&link_type=abstract

Proc. SPIE Vol. 2704, p. 16-23, The Search for Extraterrestrial Intelligence (SETI) in the Optical Spectrum II, Stuart A. Kingsl

Astronomy and Astrophysics

Astronomy

Scientific paper

Project META (Megachannel ExtraTerrestrial Assay), a full-sky survey for artificial narrow-band signals, has been conducted from the Harvard/Smithsonian 26 m radiotelescope at Agassiz Station and from one of the two 30 m radiotelescopes of the Instituto Argentino de Radioastronomia (IAR). The search was performed near the 1420 MHz line of neutral hydrogen, and its second harmonic, using two 8.4 X 10(superscript 6) channel Fourier spectrometers of 0.05 Hz resolution and 400 kHz of instantaneous bandwidth. The observing frequency was corrected both for motions with respect to three astronomical inertial frames, and for the effect of Earth's rotation, which provides a characteristic changing signature for narrow-band signals of extraterrestrial origin. Among the 6 X 10(superscript 13) spectral channels searched in the northern hemisphere, Horowitz and Sagan reported 37 candidates events exceeding the average threshold of 1.7 X 10(superscript -23) W m(superscript -2), while in the southern hemisphere among 2 X 10(superscript 13) spectral channels analyzed we found 19 events exceeding the same threshold. The strongest signals that survive culling for terrestrial interference lie in or near the Galactic Plane. The first high resolution southern target search around 71 stars (-90 degrees

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