Physics
Scientific paper
Dec 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974jbis...27..907l&link_type=abstract
British Interplanetary Society, Journal, vol. 27, Dec. 1974, p. 907-920.
Physics
Ionospheric Propagation, Lagrangian Equilibrium Points, Lunar Atmosphere, Lunar Echoes, Radio Echoes, Cosmic Plasma, F Region, Signal Transmission, Time Lag, Trojan Orbits
Scientific paper
The authors are convinced that long delayed echoes (LDEs) are real and not auditory hallucination, and possible generation mechanisms are discussed with special emphasis on 'sequences'. It is suggested that under certain described conditions the Trojan areas of the moon (and the trailing sector in particular) may have particle densities approaching the F layer of the ionosphere. In such areas, the path lengths are considerable, and plasma interactions therein would permit the generation of LDEs with delay times of several minutes and at frequencies above those normally deemed critical. Several experiments are suggested which may confirm the temporary existence of the Trojan ionosphere and the results obtained from a recent Moonbounce propagation experiment are described. It is concluded that LDEs as presently recorded and described, are not from an artifact, but are of natural origin.
Lawton A. T.
Newton Jessica S.
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