Abstract
We have been searching the northern sky for ultra-narrowband carriers of intelligent extraterrestrial origin at 21cm wavelength. The dual-polarization 65,536-channel receiver has a resolution bandwidth of 0.03Hz, matched to the Drake-Helou spreading of the interstellar medium. This maximizes signal/noise ratio, and simultaneously rejects carriers of terrestrial origin. The results of 15 months of observation are summarized.
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© 1985 International Astronomical Union
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Horowitz, P., Forster, J. (1985). Project Sentinel: Ultra-Narrowband SETI at Harvard/Smithsonian. In: Papagiannis, M.D. (eds) The Search for Extraterrestrial Life: Recent Developments. International Astronomical Union, vol 112. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5462-5_38
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DOI: https://doi.org/10.1007/978-94-009-5462-5_38
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-277-2114-3
Online ISBN: 978-94-009-5462-5
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