Letter | Published:

Ordinary Mode Whistlers observed in Satellites

Naturevolume 207pages963964 (1965) | Download Citation

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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

  1. 1

    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).

  2. 2

    Dowden, R. L., ‘Micropulsation Mode’ Propagation in the Magnetosphere (to be published).

  3. 3

    Jacobs, J. A., and Watanabe, T., J. Atmos. Terr. Phys., 26, 835 (1964).

  4. 4

    Gurnett, D. A., Shawhan, S. D., Brice, N. M., and Smith, R. L., J. Geophys. Res., 70, 1665 (1965).

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Affiliations

  1. Physics Department, University of Tasmania, Australia

    • R. L. DOWDEN

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https://doi.org/10.1038/207963b0

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