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Discovery of cometary kilometric radiations and plasma waves at comet Halley

  • Comet Halley
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Abstract

The plasma-wave probe carried by the spacecraft Sakigake discovered discrete spectra of emissions from comet Halley in the frequency range 30–195 kHz. The observed cometary kilometric radiation appears to come from moving shocks in the coma region which are possibly associated with temporal variations of the solar wind. Waves due to plasma instabilities associated with the pick-up of cometary ions by the solar wind were observed within a region almost 107 km from the comet nucleus.

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Authors and Affiliations

  1. Geophysical Institute, Tohoku University, Sendai, 980, Japan

    Hiroshi Oya, Akira Morioka & Wataru Miyake

  2. Jet Propulsion Laboratory, Pasadena, California, 91109, USA

    Edward J. Smith & Bruce T. Tsurutani

Authors
  1. Hiroshi Oya
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  2. Akira Morioka
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  3. Wataru Miyake
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  4. Edward J. Smith
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  5. Bruce T. Tsurutani
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Oya, H., Morioka, A., Miyake, W. et al. Discovery of cometary kilometric radiations and plasma waves at comet Halley. Nature 321 (Suppl 6067), 307–310 (1986). https://doi.org/10.1038/321307a0

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  • DOI: https://doi.org/10.1038/321307a0

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