Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pari.iafcq....s&link_type=abstract
International Astronautical Federation, International Astronautical Congress, 33rd, Paris, France, Sept. 27-Oct. 2, 1982, 3 p.
Astronomy and Astrophysics
Astronomy
Extraterrestrial Intelligence, Galactic Nuclei, Milky Way Galaxy, Radio Astronomy, Centimeter Waves, Cross Correlation, Data Reduction, Hydrogen, Radio Beacons, Radio Telescopes
Scientific paper
In August, 1981, the Westerbork Synthesis Radio Telescope was used for 4 hours to search for narrow-band radio beacons in the direction of the Galactic Center. By using both the spatial discrimination and temporal stability available to an interferometric measurement, weak intermittent signals can be detected even in the face of the strong, naturally-caused radiation from this region. A radio beacon within the bandwidth used here, centered on the 21-cm neutral hydrogen line, would be recognizable if it had a repetition period between 40 sec and several hours. The rms sensitivity to point sources is approximately 20 mJy, or many orders of magnitude better than typical sensitivities achieved by scanning single-dish instruments.
Shostak Seth G.
Tarter Jill
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