Abstract
SMITH et al.1 recently published dynamic spectra of a very interesting phenomenon observed in the satellites Alouette I and Injun III. One of these is reprinted here as Fig. 1A. This shows a whistler (rapidly falling part) produced by (extraordinary mode) dispersion of an atmospheric propagated upwards to the satellite. The whistler is followed by a rising trace which flattens out at a frequency which could correspond to the ion gyro-frequency.
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References
Smith, R. L., Brice, N. M., Katsufrakis, J., Gurnett, D. A., Shawhan, S. D., Belrose, F. S., and Barrington, R. E., Nature, 204, 274 (1964).
Dowden, R. L., ‘Micropulsation Mode’ Propagation in the Magnetosphere (to be published).
Jacobs, J. A., and Watanabe, T., J. Atmos. Terr. Phys., 26, 835 (1964).
Gurnett, D. A., Shawhan, S. D., Brice, N. M., and Smith, R. L., J. Geophys. Res., 70, 1665 (1965).
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DOWDEN, R. Ordinary Mode Whistlers observed in Satellites. Nature 207, 963–964 (1965). https://doi.org/10.1038/207963b0
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DOI: https://doi.org/10.1038/207963b0
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